author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 15:15:52 +0300 | |
changeset 8 | 4a7fac7dd34a |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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* |
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*/ |
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/** |
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* SECTION:element-pngdec |
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* |
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* Decodes png images. If there is no framerate set on sink caps, it sends EOS |
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* after the first picture. |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include "gstpngdec.h" |
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#include <stdlib.h> |
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#include <string.h> |
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#include <gst/video/video.h> |
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#include <gst/gst-i18n-plugin.h> |
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static const GstElementDetails gst_pngdec_details = |
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GST_ELEMENT_DETAILS ("PNG image decoder", |
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"Codec/Decoder/Image", |
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"Decode a png video frame to a raw image", |
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"Wim Taymans <wim@fluendo.com>"); |
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GST_DEBUG_CATEGORY_STATIC (pngdec_debug); |
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#define GST_CAT_DEFAULT pngdec_debug |
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static void gst_pngdec_base_init (gpointer g_class); |
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static void gst_pngdec_class_init (GstPngDecClass * klass); |
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static void gst_pngdec_init (GstPngDec * pngdec); |
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static gboolean gst_pngdec_libpng_init (GstPngDec * pngdec); |
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static gboolean gst_pngdec_libpng_clear (GstPngDec * pngdec); |
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static GstStateChangeReturn gst_pngdec_change_state (GstElement * element, |
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GstStateChange transition); |
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static gboolean gst_pngdec_sink_activate_push (GstPad * sinkpad, |
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gboolean active); |
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static gboolean gst_pngdec_sink_activate_pull (GstPad * sinkpad, |
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gboolean active); |
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static gboolean gst_pngdec_sink_activate (GstPad * sinkpad); |
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static GstFlowReturn gst_pngdec_caps_create_and_set (GstPngDec * pngdec); |
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static void gst_pngdec_task (GstPad * pad); |
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static GstFlowReturn gst_pngdec_chain (GstPad * pad, GstBuffer * buffer); |
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static gboolean gst_pngdec_sink_event (GstPad * pad, GstEvent * event); |
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static gboolean gst_pngdec_sink_setcaps (GstPad * pad, GstCaps * caps); |
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static GstElementClass *parent_class = NULL; |
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GType |
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gst_pngdec_get_type (void) |
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{ |
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static GType pngdec_type = 0; |
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if (!pngdec_type) { |
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static const GTypeInfo pngdec_info = { |
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sizeof (GstPngDecClass), |
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gst_pngdec_base_init, |
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NULL, |
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(GClassInitFunc) gst_pngdec_class_init, |
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NULL, |
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NULL, |
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sizeof (GstPngDec), |
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0, |
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(GInstanceInitFunc) gst_pngdec_init, |
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}; |
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pngdec_type = g_type_register_static (GST_TYPE_ELEMENT, "GstPngDec", |
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&pngdec_info, 0); |
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} |
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return pngdec_type; |
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} |
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static GstStaticPadTemplate gst_pngdec_src_pad_template = |
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GST_STATIC_PAD_TEMPLATE ("src", |
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GST_PAD_SRC, |
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GST_PAD_ALWAYS, |
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GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_RGB) |
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); |
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static GstStaticPadTemplate gst_pngdec_sink_pad_template = |
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GST_STATIC_PAD_TEMPLATE ("sink", |
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GST_PAD_SINK, |
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|
101 |
GST_PAD_ALWAYS, |
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|
102 |
GST_STATIC_CAPS ("image/png") |
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|
103 |
); |
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|
104 |
|
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|
105 |
static void |
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|
106 |
gst_pngdec_base_init (gpointer g_class) |
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|
107 |
{ |
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|
108 |
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); |
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|
109 |
|
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|
110 |
gst_element_class_add_pad_template (element_class, |
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|
111 |
gst_static_pad_template_get (&gst_pngdec_src_pad_template)); |
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|
112 |
gst_element_class_add_pad_template (element_class, |
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|
113 |
gst_static_pad_template_get (&gst_pngdec_sink_pad_template)); |
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|
114 |
gst_element_class_set_details (element_class, &gst_pngdec_details); |
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|
115 |
} |
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|
116 |
|
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117 |
static void |
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|
118 |
gst_pngdec_class_init (GstPngDecClass * klass) |
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|
119 |
{ |
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120 |
GstElementClass *gstelement_class; |
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|
121 |
|
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122 |
gstelement_class = (GstElementClass *) klass; |
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|
123 |
|
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124 |
parent_class = g_type_class_peek_parent (klass); |
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|
125 |
|
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|
126 |
gstelement_class->change_state = gst_pngdec_change_state; |
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|
127 |
|
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128 |
GST_DEBUG_CATEGORY_INIT (pngdec_debug, "pngdec", 0, "PNG image decoder"); |
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129 |
} |
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|
130 |
|
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|
131 |
static void |
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132 |
gst_pngdec_init (GstPngDec * pngdec) |
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|
133 |
{ |
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|
134 |
pngdec->sinkpad = |
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|
135 |
gst_pad_new_from_static_template (&gst_pngdec_sink_pad_template, "sink"); |
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|
136 |
gst_pad_set_activate_function (pngdec->sinkpad, gst_pngdec_sink_activate); |
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|
137 |
gst_pad_set_activatepush_function (pngdec->sinkpad, |
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|
138 |
gst_pngdec_sink_activate_push); |
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|
139 |
gst_pad_set_activatepull_function (pngdec->sinkpad, |
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|
140 |
gst_pngdec_sink_activate_pull); |
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|
141 |
gst_pad_set_chain_function (pngdec->sinkpad, gst_pngdec_chain); |
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|
142 |
gst_pad_set_event_function (pngdec->sinkpad, gst_pngdec_sink_event); |
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|
143 |
gst_pad_set_setcaps_function (pngdec->sinkpad, gst_pngdec_sink_setcaps); |
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|
144 |
gst_element_add_pad (GST_ELEMENT (pngdec), pngdec->sinkpad); |
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|
145 |
|
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|
146 |
pngdec->srcpad = |
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|
147 |
gst_pad_new_from_static_template (&gst_pngdec_src_pad_template, "src"); |
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|
148 |
gst_pad_use_fixed_caps (pngdec->srcpad); |
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|
149 |
gst_element_add_pad (GST_ELEMENT (pngdec), pngdec->srcpad); |
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|
150 |
|
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|
151 |
pngdec->buffer_out = NULL; |
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|
152 |
pngdec->png = NULL; |
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|
153 |
pngdec->info = NULL; |
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|
154 |
pngdec->endinfo = NULL; |
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|
155 |
pngdec->setup = FALSE; |
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|
156 |
|
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|
157 |
pngdec->color_type = -1; |
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|
158 |
pngdec->width = -1; |
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|
159 |
pngdec->height = -1; |
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Revision: 201011
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|
160 |
pngdec->bpp = -1; |
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Revision: 201011
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|
161 |
pngdec->fps_n = 0; |
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Revision: 201011
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|
162 |
pngdec->fps_d = 1; |
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|
163 |
|
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Revision: 201011
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|
164 |
pngdec->in_timestamp = GST_CLOCK_TIME_NONE; |
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|
165 |
pngdec->in_duration = GST_CLOCK_TIME_NONE; |
4a7fac7dd34a
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|
166 |
|
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Revision: 201011
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|
167 |
gst_segment_init (&pngdec->segment, GST_FORMAT_UNDEFINED); |
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|
168 |
|
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|
169 |
pngdec->image_ready = FALSE; |
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|
170 |
} |
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|
171 |
|
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Revision: 201011
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|
172 |
static void |
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|
173 |
user_error_fn (png_structp png_ptr, png_const_charp error_msg) |
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|
174 |
{ |
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|
175 |
GST_ERROR ("%s", error_msg); |
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|
176 |
} |
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|
177 |
|
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|
178 |
static void |
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|
179 |
user_warning_fn (png_structp png_ptr, png_const_charp warning_msg) |
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|
180 |
{ |
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|
181 |
GST_WARNING ("%s", warning_msg); |
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|
182 |
} |
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|
183 |
|
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Revision: 201011
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|
184 |
static void |
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Revision: 201011
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|
185 |
user_info_callback (png_structp png_ptr, png_infop info) |
4a7fac7dd34a
Revision: 201011
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|
186 |
{ |
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Revision: 201011
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|
187 |
GstPngDec *pngdec = NULL; |
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Revision: 201011
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|
188 |
GstFlowReturn ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
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|
189 |
size_t buffer_size; |
4a7fac7dd34a
Revision: 201011
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|
190 |
GstBuffer *buffer = NULL; |
4a7fac7dd34a
Revision: 201011
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diff
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|
191 |
|
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Revision: 201011
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diff
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|
192 |
pngdec = GST_PNGDEC (png_ptr->io_ptr); |
4a7fac7dd34a
Revision: 201011
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diff
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|
193 |
|
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Revision: 201011
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|
194 |
GST_LOG ("info ready"); |
4a7fac7dd34a
Revision: 201011
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|
195 |
|
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Revision: 201011
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|
196 |
/* Generate the caps and configure */ |
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Revision: 201011
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|
197 |
ret = gst_pngdec_caps_create_and_set (pngdec); |
4a7fac7dd34a
Revision: 201011
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|
198 |
if (ret != GST_FLOW_OK) { |
4a7fac7dd34a
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|
199 |
goto beach; |
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Revision: 201011
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|
200 |
} |
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Revision: 201011
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parents:
diff
changeset
|
201 |
|
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Revision: 201011
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diff
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|
202 |
/* Allocate output buffer */ |
4a7fac7dd34a
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|
203 |
pngdec->rowbytes = png_get_rowbytes (pngdec->png, pngdec->info); |
4a7fac7dd34a
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|
204 |
buffer_size = pngdec->height * GST_ROUND_UP_4 (pngdec->rowbytes); |
4a7fac7dd34a
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|
205 |
ret = |
4a7fac7dd34a
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|
206 |
gst_pad_alloc_buffer_and_set_caps (pngdec->srcpad, GST_BUFFER_OFFSET_NONE, |
4a7fac7dd34a
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|
207 |
buffer_size, GST_PAD_CAPS (pngdec->srcpad), &buffer); |
4a7fac7dd34a
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|
208 |
if (ret != GST_FLOW_OK) { |
4a7fac7dd34a
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|
209 |
goto beach; |
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|
210 |
} |
4a7fac7dd34a
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|
211 |
|
4a7fac7dd34a
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|
212 |
pngdec->buffer_out = buffer; |
4a7fac7dd34a
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|
213 |
|
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Revision: 201011
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|
214 |
beach: |
4a7fac7dd34a
Revision: 201011
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|
215 |
pngdec->ret = ret; |
4a7fac7dd34a
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|
216 |
} |
4a7fac7dd34a
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|
217 |
|
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|
218 |
static void |
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|
219 |
user_endrow_callback (png_structp png_ptr, png_bytep new_row, |
4a7fac7dd34a
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|
220 |
png_uint_32 row_num, int pass) |
4a7fac7dd34a
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|
221 |
{ |
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|
222 |
GstPngDec *pngdec = NULL; |
4a7fac7dd34a
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|
223 |
|
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|
224 |
pngdec = GST_PNGDEC (png_ptr->io_ptr); |
4a7fac7dd34a
Revision: 201011
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|
225 |
|
4a7fac7dd34a
Revision: 201011
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|
226 |
/* FIXME: implement interlaced pictures */ |
4a7fac7dd34a
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|
227 |
|
4a7fac7dd34a
Revision: 201011
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|
228 |
/* If buffer_out doesn't exist, it means buffer_alloc failed, which |
4a7fac7dd34a
Revision: 201011
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|
229 |
* will already have set the return code */ |
4a7fac7dd34a
Revision: 201011
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|
230 |
if (GST_IS_BUFFER (pngdec->buffer_out)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
231 |
size_t offset = row_num * GST_ROUND_UP_4 (pngdec->rowbytes); |
4a7fac7dd34a
Revision: 201011
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|
232 |
|
4a7fac7dd34a
Revision: 201011
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|
233 |
GST_LOG ("got row %u, copying in buffer %p at offset %" G_GSIZE_FORMAT, |
4a7fac7dd34a
Revision: 201011
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parents:
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|
234 |
(guint) row_num, pngdec->buffer_out, offset); |
4a7fac7dd34a
Revision: 201011
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|
235 |
memcpy (GST_BUFFER_DATA (pngdec->buffer_out) + offset, new_row, |
4a7fac7dd34a
Revision: 201011
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parents:
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|
236 |
pngdec->rowbytes); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
237 |
pngdec->ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
238 |
} |
4a7fac7dd34a
Revision: 201011
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parents:
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|
239 |
} |
4a7fac7dd34a
Revision: 201011
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|
240 |
|
4a7fac7dd34a
Revision: 201011
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|
241 |
static gboolean |
4a7fac7dd34a
Revision: 201011
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parents:
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|
242 |
buffer_clip (GstPngDec * dec, GstBuffer * buffer) |
4a7fac7dd34a
Revision: 201011
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parents:
diff
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|
243 |
{ |
4a7fac7dd34a
Revision: 201011
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parents:
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|
244 |
gboolean res = TRUE; |
4a7fac7dd34a
Revision: 201011
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|
245 |
gint64 cstart, cstop; |
4a7fac7dd34a
Revision: 201011
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|
246 |
|
4a7fac7dd34a
Revision: 201011
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|
247 |
|
4a7fac7dd34a
Revision: 201011
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parents:
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|
248 |
if ((!GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer))) || |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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|
249 |
(!GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DURATION (buffer))) || |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
250 |
(dec->segment.format != GST_FORMAT_TIME)) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
251 |
goto beach; |
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
252 |
|
4a7fac7dd34a
Revision: 201011
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parents:
diff
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|
253 |
cstart = GST_BUFFER_TIMESTAMP (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
254 |
cstop = GST_BUFFER_DURATION (buffer); |
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
255 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
256 |
if ((res = gst_segment_clip (&dec->segment, GST_FORMAT_TIME, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
257 |
cstart, cstart + cstop, &cstart, &cstop))) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
258 |
GST_BUFFER_TIMESTAMP (buffer) = cstart; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
259 |
GST_BUFFER_DURATION (buffer) = cstop - cstart; |
4a7fac7dd34a
Revision: 201011
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parents:
diff
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|
260 |
} |
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
261 |
|
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
262 |
beach: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
263 |
return res; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
264 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
265 |
|
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
266 |
static void |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
267 |
user_end_callback (png_structp png_ptr, png_infop info) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
268 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
269 |
GstPngDec *pngdec = NULL; |
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
270 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
271 |
pngdec = GST_PNGDEC (png_ptr->io_ptr); |
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
272 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
273 |
GST_LOG_OBJECT (pngdec, "and we are done reading this image"); |
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
274 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
275 |
if (!pngdec->buffer_out) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
276 |
return; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
277 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
278 |
if (GST_CLOCK_TIME_IS_VALID (pngdec->in_timestamp)) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
279 |
GST_BUFFER_TIMESTAMP (pngdec->buffer_out) = pngdec->in_timestamp; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
280 |
if (GST_CLOCK_TIME_IS_VALID (pngdec->in_duration)) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
281 |
GST_BUFFER_DURATION (pngdec->buffer_out) = pngdec->in_duration; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
282 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
283 |
/* buffer clipping */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
284 |
if (buffer_clip (pngdec, pngdec->buffer_out)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
285 |
/* Push our buffer and then EOS if needed */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
286 |
GST_LOG_OBJECT (pngdec, "pushing buffer with ts=%" GST_TIME_FORMAT, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
287 |
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (pngdec->buffer_out))); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
288 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
289 |
pngdec->ret = gst_pad_push (pngdec->srcpad, pngdec->buffer_out); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
290 |
} else { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
291 |
GST_LOG_OBJECT (pngdec, "dropped decoded buffer"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
292 |
gst_buffer_unref (pngdec->buffer_out); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
293 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
294 |
pngdec->buffer_out = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
295 |
pngdec->image_ready = TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
296 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
297 |
|
4a7fac7dd34a
Revision: 201011
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parents:
diff
changeset
|
298 |
static void |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
299 |
user_read_data (png_structp png_ptr, png_bytep data, png_size_t length) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
300 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
301 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
302 |
GstBuffer *buffer; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
303 |
GstFlowReturn ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
304 |
guint size; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
305 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
306 |
pngdec = GST_PNGDEC (png_ptr->io_ptr); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
307 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
308 |
GST_LOG ("reading %" G_GSIZE_FORMAT " bytes of data at offset %d", length, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
309 |
pngdec->offset); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
310 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
311 |
ret = gst_pad_pull_range (pngdec->sinkpad, pngdec->offset, length, &buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
312 |
if (ret != GST_FLOW_OK) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
313 |
goto pause; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
314 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
315 |
size = GST_BUFFER_SIZE (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
316 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
317 |
if (size != length) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
318 |
goto short_buffer; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
319 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
320 |
memcpy (data, GST_BUFFER_DATA (buffer), size); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
321 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
322 |
gst_buffer_unref (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
323 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
324 |
pngdec->offset += length; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
325 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
326 |
return; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
327 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
328 |
/* ERRORS */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
329 |
pause: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
330 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
331 |
GST_INFO_OBJECT (pngdec, "pausing task, reason %s", |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
332 |
gst_flow_get_name (ret)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
333 |
gst_pad_pause_task (pngdec->sinkpad); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
334 |
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
335 |
GST_ELEMENT_ERROR (pngdec, STREAM, FAILED, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
336 |
(_("Internal data stream error.")), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
337 |
("stream stopped, reason %s", gst_flow_get_name (ret))); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
338 |
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ()); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
339 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
340 |
return; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
341 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
342 |
short_buffer: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
343 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
344 |
gst_buffer_unref (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
345 |
GST_ELEMENT_ERROR (pngdec, STREAM, FAILED, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
346 |
(_("Internal data stream error.")), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
347 |
("Read %u, needed %" G_GSIZE_FORMAT "bytes", size, length)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
348 |
ret = GST_FLOW_ERROR; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
349 |
goto pause; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
350 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
351 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
352 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
353 |
static GstFlowReturn |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
354 |
gst_pngdec_caps_create_and_set (GstPngDec * pngdec) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
355 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
356 |
GstFlowReturn ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
357 |
GstCaps *caps = NULL, *res = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
358 |
GstPadTemplate *templ = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
359 |
gint bpc = 0, color_type; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
360 |
png_uint_32 width, height; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
361 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
362 |
g_return_val_if_fail (GST_IS_PNGDEC (pngdec), GST_FLOW_ERROR); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
363 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
364 |
/* Get bits per channel */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
365 |
bpc = png_get_bit_depth (pngdec->png, pngdec->info); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
366 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
367 |
/* We don't handle 16 bits per color, strip down to 8 */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
368 |
if (bpc == 16) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
369 |
GST_LOG_OBJECT (pngdec, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
370 |
"this is a 16 bits per channel PNG image, strip down to 8 bits"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
371 |
png_set_strip_16 (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
372 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
373 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
374 |
/* Get Color type */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
375 |
color_type = png_get_color_type (pngdec->png, pngdec->info); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
376 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
377 |
#if 0 |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
378 |
/* We used to have this HACK to reverse the outgoing bytes, but the problem |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
379 |
* that originally required the hack seems to have been in ffmpegcolorspace's |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
380 |
* RGBA descriptions. It doesn't seem needed now that's fixed, but might |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
381 |
* still be needed on big-endian systems, I'm not sure. J.S. 6/7/2007 */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
382 |
if (color_type == PNG_COLOR_TYPE_RGB_ALPHA) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
383 |
png_set_bgr (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
#endif |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
/* Gray scale converted to RGB and upscaled to 8 bits */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
if ((color_type == PNG_COLOR_TYPE_GRAY_ALPHA) || |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
388 |
(color_type == PNG_COLOR_TYPE_GRAY)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
GST_LOG_OBJECT (pngdec, "converting grayscale png to RGB"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
png_set_gray_to_rgb (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
if (bpc < 8) { /* Convert to 8 bits */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
GST_LOG_OBJECT (pngdec, "converting grayscale image to 8 bits"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
png_set_gray_1_2_4_to_8 (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
/* Palette converted to RGB */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
if (color_type == PNG_COLOR_TYPE_PALETTE) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
GST_LOG_OBJECT (pngdec, "converting palette png to RGB"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
400 |
png_set_palette_to_rgb (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
/* Update the info structure */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
png_read_update_info (pngdec->png, pngdec->info); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
/* Get IHDR header again after transformation settings */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
png_get_IHDR (pngdec->png, pngdec->info, &width, &height, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
409 |
&bpc, &pngdec->color_type, NULL, NULL, NULL); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
411 |
pngdec->width = width; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
pngdec->height = height; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
GST_LOG_OBJECT (pngdec, "this is a %dx%d PNG image", pngdec->width, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
pngdec->height); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
switch (pngdec->color_type) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
case PNG_COLOR_TYPE_RGB: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
GST_LOG_OBJECT (pngdec, "we have no alpha channel, depth is 24 bits"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
pngdec->bpp = 24; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
case PNG_COLOR_TYPE_RGB_ALPHA: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
GST_LOG_OBJECT (pngdec, "we have an alpha channel, depth is 32 bits"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
pngdec->bpp = 32; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
default: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
GST_ELEMENT_ERROR (pngdec, STREAM, NOT_IMPLEMENTED, (NULL), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
("pngdec does not support this color type")); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
ret = GST_FLOW_NOT_SUPPORTED; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
goto beach; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
caps = gst_caps_new_simple ("video/x-raw-rgb", |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
"width", G_TYPE_INT, pngdec->width, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
"height", G_TYPE_INT, pngdec->height, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
"bpp", G_TYPE_INT, pngdec->bpp, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
"framerate", GST_TYPE_FRACTION, pngdec->fps_n, pngdec->fps_d, NULL); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
templ = gst_static_pad_template_get (&gst_pngdec_src_pad_template); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
res = gst_caps_intersect (caps, gst_pad_template_get_caps (templ)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
gst_caps_unref (caps); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
gst_object_unref (templ); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
if (!gst_pad_set_caps (pngdec->srcpad, res)) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
ret = GST_FLOW_NOT_NEGOTIATED; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
GST_DEBUG_OBJECT (pngdec, "our caps %" GST_PTR_FORMAT, res); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
gst_caps_unref (res); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
/* Push a newsegment event */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
if (pngdec->need_newsegment) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
gst_pad_push_event (pngdec->srcpad, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
pngdec->need_newsegment = FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
458 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
459 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
beach: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
461 |
return ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
static void |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
gst_pngdec_task (GstPad * pad) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
GstBuffer *buffer = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
size_t buffer_size = 0; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
470 |
gint i = 0; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
471 |
png_bytep *rows, inp; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
472 |
png_uint_32 rowbytes; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
GstFlowReturn ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
pngdec = GST_PNGDEC (GST_OBJECT_PARENT (pad)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
GST_LOG_OBJECT (pngdec, "read frame"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
/* Let libpng come back here on error */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
480 |
if (setjmp (png_jmpbuf (pngdec->png))) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
ret = GST_FLOW_ERROR; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
goto pause; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
483 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
484 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
/* Set reading callback */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
png_set_read_fn (pngdec->png, pngdec, user_read_data); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
487 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
488 |
/* Read info */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
489 |
png_read_info (pngdec->png, pngdec->info); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
/* Generate the caps and configure */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
ret = gst_pngdec_caps_create_and_set (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
493 |
if (ret != GST_FLOW_OK) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
494 |
goto pause; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
495 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
496 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
497 |
/* Allocate output buffer */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
rowbytes = png_get_rowbytes (pngdec->png, pngdec->info); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
499 |
buffer_size = pngdec->height * GST_ROUND_UP_4 (rowbytes); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
500 |
ret = |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
501 |
gst_pad_alloc_buffer_and_set_caps (pngdec->srcpad, GST_BUFFER_OFFSET_NONE, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
buffer_size, GST_PAD_CAPS (pngdec->srcpad), &buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
503 |
if (ret != GST_FLOW_OK) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
goto pause; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
rows = (png_bytep *) g_malloc (sizeof (png_bytep) * pngdec->height); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
inp = GST_BUFFER_DATA (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
for (i = 0; i < pngdec->height; i++) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
rows[i] = inp; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
inp += GST_ROUND_UP_4 (rowbytes); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
/* Read the actual picture */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
png_read_image (pngdec->png, rows); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
free (rows); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
/* Push the raw RGB frame */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
ret = gst_pad_push (pngdec->srcpad, buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
if (ret != GST_FLOW_OK) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
goto pause; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
/* And we are done */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
gst_pad_pause_task (pngdec->sinkpad); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ()); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
return; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
pause: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
531 |
GST_INFO_OBJECT (pngdec, "pausing task, reason %s", |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
gst_flow_get_name (ret)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
gst_pad_pause_task (pngdec->sinkpad); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
GST_ELEMENT_ERROR (pngdec, STREAM, FAILED, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
(_("Internal data stream error.")), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
("stream stopped, reason %s", gst_flow_get_name (ret))); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ()); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
static GstFlowReturn |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
gst_pngdec_chain (GstPad * pad, GstBuffer * buffer) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
GstFlowReturn ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
549 |
pngdec = GST_PNGDEC (gst_pad_get_parent (pad)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
550 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
GST_LOG_OBJECT (pngdec, "Got buffer, size=%u", GST_BUFFER_SIZE (buffer)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
553 |
if (G_UNLIKELY (!pngdec->setup)) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
goto not_configured; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
/* Something is going wrong in our callbacks */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
ret = pngdec->ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
if (G_UNLIKELY (ret != GST_FLOW_OK)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
GST_WARNING_OBJECT (pngdec, "we have a pending return code of %d", ret); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
goto beach; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
561 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
562 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
563 |
/* Let libpng come back here on error */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
564 |
if (setjmp (png_jmpbuf (pngdec->png))) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
565 |
GST_WARNING_OBJECT (pngdec, "error during decoding"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
566 |
ret = GST_FLOW_ERROR; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
567 |
goto beach; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
568 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
569 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
570 |
pngdec->in_timestamp = GST_BUFFER_TIMESTAMP (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
571 |
pngdec->in_duration = GST_BUFFER_DURATION (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
572 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
573 |
/* Progressive loading of the PNG image */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
574 |
png_process_data (pngdec->png, pngdec->info, GST_BUFFER_DATA (buffer), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
575 |
GST_BUFFER_SIZE (buffer)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
576 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
577 |
if (pngdec->image_ready) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
578 |
if (pngdec->framed) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
579 |
/* Reset ourselves for the next frame */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
580 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
581 |
gst_pngdec_libpng_init (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
582 |
GST_LOG_OBJECT (pngdec, "setting up callbacks for next frame"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
583 |
png_set_progressive_read_fn (pngdec->png, pngdec, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
584 |
user_info_callback, user_endrow_callback, user_end_callback); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
585 |
} else { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
586 |
GST_LOG_OBJECT (pngdec, "sending EOS"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
587 |
pngdec->ret = gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ()); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
588 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
589 |
pngdec->image_ready = FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
590 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
591 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
592 |
/* grab new return code */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
593 |
ret = pngdec->ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
594 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
595 |
/* And release the buffer */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
596 |
gst_buffer_unref (buffer); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
597 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
598 |
beach: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
599 |
gst_object_unref (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
600 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
601 |
return ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
602 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
603 |
/* ERRORS */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
604 |
not_configured: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
605 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
606 |
GST_LOG_OBJECT (pngdec, "we are not configured yet"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
607 |
ret = GST_FLOW_WRONG_STATE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
608 |
goto beach; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
609 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
610 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
611 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
612 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
613 |
gst_pngdec_sink_setcaps (GstPad * pad, GstCaps * caps) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
614 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
615 |
GstStructure *s; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
616 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
617 |
gint num, denom; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
618 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
619 |
pngdec = GST_PNGDEC (gst_pad_get_parent (pad)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
620 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
621 |
s = gst_caps_get_structure (caps, 0); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
622 |
if (gst_structure_get_fraction (s, "framerate", &num, &denom)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
623 |
GST_DEBUG_OBJECT (pngdec, "framed input"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
624 |
pngdec->framed = TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
625 |
pngdec->fps_n = num; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
626 |
pngdec->fps_d = denom; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
627 |
} else { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
628 |
GST_DEBUG_OBJECT (pngdec, "single picture input"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
629 |
pngdec->framed = FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
630 |
pngdec->fps_n = 0; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
631 |
pngdec->fps_d = 1; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
632 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
633 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
634 |
gst_object_unref (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
635 |
return TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
636 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
637 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
638 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
639 |
gst_pngdec_sink_event (GstPad * pad, GstEvent * event) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
640 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
641 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
642 |
gboolean res; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
643 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
644 |
pngdec = GST_PNGDEC (gst_pad_get_parent (pad)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
645 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
646 |
switch (GST_EVENT_TYPE (event)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
647 |
case GST_EVENT_NEWSEGMENT:{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
648 |
gdouble rate, arate; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
649 |
gboolean update; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
650 |
gint64 start, stop, position; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
651 |
GstFormat fmt; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
652 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
653 |
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &fmt, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
654 |
&start, &stop, &position); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
655 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
656 |
gst_segment_set_newsegment_full (&pngdec->segment, update, rate, arate, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
657 |
fmt, start, stop, position); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
658 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
659 |
GST_LOG_OBJECT (pngdec, "NEWSEGMENT (%s)", gst_format_get_name (fmt)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
660 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
661 |
if (fmt == GST_FORMAT_TIME) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
662 |
pngdec->need_newsegment = FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
663 |
res = gst_pad_push_event (pngdec->srcpad, event); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
664 |
} else { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
665 |
gst_event_unref (event); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
666 |
res = TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
667 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
668 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
669 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
670 |
case GST_EVENT_FLUSH_STOP: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
671 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
672 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
673 |
gst_pngdec_libpng_init (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
674 |
png_set_progressive_read_fn (pngdec->png, pngdec, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
675 |
user_info_callback, user_endrow_callback, user_end_callback); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
676 |
pngdec->ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
677 |
gst_segment_init (&pngdec->segment, GST_FORMAT_UNDEFINED); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
678 |
res = gst_pad_push_event (pngdec->srcpad, event); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
679 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
680 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
681 |
case GST_EVENT_EOS: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
682 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
683 |
GST_LOG_OBJECT (pngdec, "EOS"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
684 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
685 |
pngdec->ret = GST_FLOW_UNEXPECTED; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
686 |
res = gst_pad_push_event (pngdec->srcpad, event); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
687 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
688 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
689 |
default: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
690 |
res = gst_pad_push_event (pngdec->srcpad, event); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
691 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
692 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
693 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
694 |
gst_object_unref (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
695 |
return res; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
696 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
697 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
698 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
699 |
/* Clean up the libpng structures */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
700 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
701 |
gst_pngdec_libpng_clear (GstPngDec * pngdec) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
702 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
703 |
png_infopp info = NULL, endinfo = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
704 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
705 |
g_return_val_if_fail (GST_IS_PNGDEC (pngdec), FALSE); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
706 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
707 |
GST_LOG ("cleaning up libpng structures"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
708 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
709 |
if (pngdec->info) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
710 |
info = &pngdec->info; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
711 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
712 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
713 |
if (pngdec->endinfo) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
714 |
endinfo = &pngdec->endinfo; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
715 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
716 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
717 |
if (pngdec->png) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
718 |
png_destroy_read_struct (&(pngdec->png), info, endinfo); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
719 |
pngdec->png = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
720 |
pngdec->info = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
721 |
pngdec->endinfo = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
722 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
723 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
724 |
pngdec->bpp = pngdec->color_type = pngdec->height = pngdec->width = -1; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
725 |
pngdec->offset = 0; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
726 |
pngdec->rowbytes = 0; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
727 |
pngdec->buffer_out = NULL; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
728 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
729 |
pngdec->setup = FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
730 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
731 |
pngdec->in_timestamp = GST_CLOCK_TIME_NONE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
732 |
pngdec->in_duration = GST_CLOCK_TIME_NONE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
733 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
734 |
return TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
735 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
736 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
737 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
738 |
gst_pngdec_libpng_init (GstPngDec * pngdec) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
739 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
740 |
g_return_val_if_fail (GST_IS_PNGDEC (pngdec), FALSE); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
741 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
742 |
if (pngdec->setup) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
743 |
return TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
744 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
745 |
GST_LOG ("init libpng structures"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
746 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
747 |
/* initialize png struct stuff */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
748 |
pngdec->png = png_create_read_struct (PNG_LIBPNG_VER_STRING, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
749 |
(png_voidp) NULL, user_error_fn, user_warning_fn); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
750 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
751 |
if (pngdec->png == NULL) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
752 |
goto init_failed; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
753 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
754 |
pngdec->info = png_create_info_struct (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
755 |
if (pngdec->info == NULL) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
756 |
goto info_failed; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
757 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
758 |
pngdec->endinfo = png_create_info_struct (pngdec->png); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
759 |
if (pngdec->endinfo == NULL) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
760 |
goto endinfo_failed; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
761 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
762 |
pngdec->setup = TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
763 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
764 |
return TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
765 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
766 |
/* ERRORS */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
767 |
init_failed: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
768 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
769 |
GST_ELEMENT_ERROR (pngdec, LIBRARY, INIT, (NULL), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
770 |
("Failed to initialize png structure")); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
771 |
return FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
772 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
773 |
info_failed: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
774 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
775 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
776 |
GST_ELEMENT_ERROR (pngdec, LIBRARY, INIT, (NULL), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
777 |
("Failed to initialize info structure")); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
778 |
return FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
779 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
780 |
endinfo_failed: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
781 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
782 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
783 |
GST_ELEMENT_ERROR (pngdec, LIBRARY, INIT, (NULL), |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
784 |
("Failed to initialize endinfo structure")); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
785 |
return FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
786 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
787 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
788 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
789 |
static GstStateChangeReturn |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
790 |
gst_pngdec_change_state (GstElement * element, GstStateChange transition) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
791 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
792 |
GstStateChangeReturn ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
793 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
794 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
795 |
pngdec = GST_PNGDEC (element); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
796 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
797 |
switch (transition) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
798 |
case GST_STATE_CHANGE_READY_TO_PAUSED: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
799 |
gst_pngdec_libpng_init (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
800 |
pngdec->need_newsegment = TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
801 |
pngdec->framed = FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
802 |
pngdec->ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
803 |
gst_segment_init (&pngdec->segment, GST_FORMAT_UNDEFINED); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
804 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
805 |
default: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
806 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
807 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
808 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
809 |
ret = parent_class->change_state (element, transition); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
810 |
if (ret != GST_STATE_CHANGE_SUCCESS) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
811 |
return ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
812 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
813 |
switch (transition) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
814 |
case GST_STATE_CHANGE_PAUSED_TO_READY: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
815 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
816 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
817 |
default: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
818 |
break; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
819 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
820 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
821 |
return ret; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
822 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
823 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
824 |
/* this function gets called when we activate ourselves in push mode. */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
825 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
826 |
gst_pngdec_sink_activate_push (GstPad * sinkpad, gboolean active) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
827 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
828 |
GstPngDec *pngdec; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
829 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
830 |
pngdec = GST_PNGDEC (GST_OBJECT_PARENT (sinkpad)); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
831 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
832 |
pngdec->ret = GST_FLOW_OK; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
833 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
834 |
if (active) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
835 |
/* Let libpng come back here on error */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
836 |
if (setjmp (png_jmpbuf (pngdec->png))) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
837 |
goto setup_failed; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
838 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
839 |
GST_LOG ("setting up progressive loading callbacks"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
840 |
png_set_progressive_read_fn (pngdec->png, pngdec, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
841 |
user_info_callback, user_endrow_callback, user_end_callback); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
842 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
843 |
return TRUE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
844 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
845 |
setup_failed: |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
846 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
847 |
GST_LOG ("failed setting up libpng jmpbuf"); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
848 |
gst_pngdec_libpng_clear (pngdec); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
849 |
return FALSE; |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
850 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
851 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
852 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
853 |
/* this function gets called when we activate ourselves in pull mode. |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
854 |
* We can perform random access to the resource and we start a task |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
855 |
* to start reading */ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
856 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
857 |
gst_pngdec_sink_activate_pull (GstPad * sinkpad, gboolean active) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
858 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
859 |
if (active) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
860 |
return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_pngdec_task, |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
861 |
sinkpad); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
862 |
} else { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
863 |
return gst_pad_stop_task (sinkpad); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
864 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
865 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
866 |
|
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
867 |
/* this function is called when the pad is activated and should start |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
868 |
* processing data. |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
869 |
* |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
870 |
* We check if we can do random access to decide if we work push or |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
871 |
* pull based. |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
872 |
*/ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
873 |
static gboolean |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
874 |
gst_pngdec_sink_activate (GstPad * sinkpad) |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
875 |
{ |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
876 |
if (gst_pad_check_pull_range (sinkpad)) { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
877 |
return gst_pad_activate_pull (sinkpad, TRUE); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
878 |
} else { |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
879 |
return gst_pad_activate_push (sinkpad, TRUE); |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
880 |
} |
4a7fac7dd34a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
881 |
} |