--- a/gst_plugins_base/ext/libvisual/visual.c Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,957 +0,0 @@
-/* GStreamer
- * Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gst/gst.h>
-#include <gst/base/gstadapter.h>
-#include <gst/video/video.h>
-#include <gst/audio/audio.h>
-#include <libvisual/libvisual.h>
-
-#define GST_TYPE_VISUAL (gst_visual_get_type())
-#define GST_IS_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VISUAL))
-#define GST_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VISUAL,GstVisual))
-#define GST_IS_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VISUAL))
-#define GST_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VISUAL,GstVisualClass))
-#define GST_VISUAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VISUAL, GstVisualClass))
-
-typedef struct _GstVisual GstVisual;
-typedef struct _GstVisualClass GstVisualClass;
-
-GST_DEBUG_CATEGORY_STATIC (libvisual_debug);
-#define GST_CAT_DEFAULT (libvisual_debug)
-
-struct _GstVisual
-{
- GstElement element;
-
- /* pads */
- GstPad *sinkpad;
- GstPad *srcpad;
- GstClockTime next_ts;
- GstSegment segment;
-
- /* libvisual stuff */
- VisAudio *audio;
- VisVideo *video;
- VisActor *actor;
-
- /* audio/video state */
- gint channels;
- gint rate; /* Input samplerate */
- gint bps;
-
- /* framerate numerator & denominator */
- gint fps_n;
- gint fps_d;
- gint width;
- gint height;
- GstClockTime duration;
- guint outsize;
-
- /* samples per frame based on caps */
- guint spf;
-
- /* state stuff */
- GstAdapter *adapter;
- guint count;
-
- /* QoS stuff *//* with LOCK */
- gdouble proportion;
- GstClockTime earliest_time;
-};
-
-struct _GstVisualClass
-{
- GstElementClass parent_class;
-
- VisPluginRef *plugin;
-};
-
-GType gst_visual_get_type (void);
-
-
-static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN "; "
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- GST_VIDEO_CAPS_RGB "; "
-#else
- GST_VIDEO_CAPS_BGR "; "
-#endif
- GST_VIDEO_CAPS_RGB_16)
- );
-
-static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("audio/x-raw-int, "
- "width = (int) 16, "
- "depth = (int) 16, "
- "endianness = (int) BYTE_ORDER, "
- "signed = (boolean) TRUE, " "channels = (int) { 1, 2 }, "
-#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
- "rate = (int) { 8000, 11250, 22500, 32000, 44100, 48000, 96000 }"
-#else
- "rate = (int) [ 1000, MAX ]"
-#endif
- )
- );
-
-
-static void gst_visual_class_init (gpointer g_class, gpointer class_data);
-static void gst_visual_init (GstVisual * visual);
-static void gst_visual_dispose (GObject * object);
-
-static GstStateChangeReturn gst_visual_change_state (GstElement * element,
- GstStateChange transition);
-static GstFlowReturn gst_visual_chain (GstPad * pad, GstBuffer * buffer);
-static gboolean gst_visual_sink_event (GstPad * pad, GstEvent * event);
-static gboolean gst_visual_src_event (GstPad * pad, GstEvent * event);
-
-static gboolean gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps);
-static gboolean gst_visual_src_setcaps (GstPad * pad, GstCaps * caps);
-static GstCaps *gst_visual_getcaps (GstPad * pad);
-static void libvisual_log_handler (const char *message, const char *funcname,
- void *priv);
-
-static GstElementClass *parent_class = NULL;
-
-GType
-gst_visual_get_type (void)
-{
- static GType type = 0;
-
- if (G_UNLIKELY (type == 0)) {
- static const GTypeInfo info = {
- sizeof (GstVisualClass),
- NULL,
- NULL,
- gst_visual_class_init,
- NULL,
- NULL,
- sizeof (GstVisual),
- 0,
- (GInstanceInitFunc) gst_visual_init,
- };
-
- type = g_type_register_static (GST_TYPE_ELEMENT, "GstVisual", &info, 0);
- }
- return type;
-}
-
-static void
-libvisual_log_handler (const char *message, const char *funcname, void *priv)
-{
- GST_CAT_LEVEL_LOG (libvisual_debug, (GstDebugLevel) (priv), NULL, "%s - %s",
- funcname, message);
-}
-
-static void
-gst_visual_class_init (gpointer g_class, gpointer class_data)
-{
- GstVisualClass *klass = GST_VISUAL_CLASS (g_class);
- GstElementClass *element = GST_ELEMENT_CLASS (g_class);
- GObjectClass *object = G_OBJECT_CLASS (g_class);
-
- klass->plugin = class_data;
-
- element->change_state = gst_visual_change_state;
-
- if (class_data == NULL) {
- parent_class = g_type_class_peek_parent (g_class);
- } else {
- GstElementDetails details = {
- NULL,
- "Visualization",
- klass->plugin->info->about,
- "Benjamin Otte <otte@gnome.org>"
- };
-
- details.longname = g_strdup_printf ("libvisual %s plugin v.%s",
- klass->plugin->info->name, klass->plugin->info->version);
-
- /* FIXME: improve to only register what plugin supports? */
- gst_element_class_add_pad_template (element,
- gst_static_pad_template_get (&src_template));
- gst_element_class_add_pad_template (element,
- gst_static_pad_template_get (&sink_template));
- gst_element_class_set_details (element, &details);
- g_free (details.longname);
- }
-
- object->dispose = gst_visual_dispose;
-}
-
-static void
-gst_visual_init (GstVisual * visual)
-{
- /* create the sink and src pads */
- visual->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
- gst_pad_set_setcaps_function (visual->sinkpad, gst_visual_sink_setcaps);
- gst_pad_set_chain_function (visual->sinkpad, gst_visual_chain);
- gst_pad_set_event_function (visual->sinkpad, gst_visual_sink_event);
- gst_element_add_pad (GST_ELEMENT (visual), visual->sinkpad);
-
- visual->srcpad = gst_pad_new_from_static_template (&src_template, "src");
- gst_pad_set_setcaps_function (visual->srcpad, gst_visual_src_setcaps);
- gst_pad_set_getcaps_function (visual->srcpad, gst_visual_getcaps);
- gst_pad_set_event_function (visual->srcpad, gst_visual_src_event);
- gst_element_add_pad (GST_ELEMENT (visual), visual->srcpad);
-
- visual->adapter = gst_adapter_new ();
-}
-
-static void
-gst_visual_clear_actors (GstVisual * visual)
-{
- if (visual->actor) {
- visual_object_unref (VISUAL_OBJECT (visual->actor));
- visual->actor = NULL;
- }
- if (visual->video) {
- visual_object_unref (VISUAL_OBJECT (visual->video));
- visual->video = NULL;
- }
- if (visual->audio) {
- visual_object_unref (VISUAL_OBJECT (visual->audio));
- visual->audio = NULL;
- }
-}
-
-static void
-gst_visual_dispose (GObject * object)
-{
- GstVisual *visual = GST_VISUAL (object);
-
- if (visual->adapter) {
- g_object_unref (visual->adapter);
- visual->adapter = NULL;
- }
- gst_visual_clear_actors (visual);
-
- GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
-}
-
-static void
-gst_visual_reset (GstVisual * visual)
-{
- visual->next_ts = -1;
- gst_adapter_clear (visual->adapter);
- gst_segment_init (&visual->segment, GST_FORMAT_UNDEFINED);
-
- GST_OBJECT_LOCK (visual);
- visual->proportion = 1.0;
- visual->earliest_time = -1;
- GST_OBJECT_UNLOCK (visual);
-}
-
-static GstCaps *
-gst_visual_getcaps (GstPad * pad)
-{
- GstCaps *ret;
- GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
- int depths;
-
- if (!visual->actor) {
- ret = gst_caps_copy (gst_pad_get_pad_template_caps (visual->srcpad));
- goto beach;
- }
-
- ret = gst_caps_new_empty ();
- depths = visual_actor_get_supported_depth (visual->actor);
- if (depths < 0) {
- /* FIXME: set an error */
- goto beach;
- }
- if (depths == VISUAL_VIDEO_DEPTH_GL) {
- /* We can't handle GL only plugins */
- goto beach;
- }
-
- GST_DEBUG_OBJECT (visual, "libvisual plugin supports depths %u (0x%04x)",
- depths, depths);
- /* if (depths & VISUAL_VIDEO_DEPTH_32BIT) Always supports 32bit output */
- gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN));
-
- if (depths & VISUAL_VIDEO_DEPTH_24BIT) {
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB));
-#else
- gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_BGR));
-#endif
- }
- if (depths & VISUAL_VIDEO_DEPTH_16BIT) {
- gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB_16));
- }
-
-beach:
-
- GST_DEBUG_OBJECT (visual, "returning caps %" GST_PTR_FORMAT, ret);
- gst_object_unref (visual);
- return ret;
-}
-
-static gboolean
-gst_visual_src_setcaps (GstPad * pad, GstCaps * caps)
-{
- GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
- GstStructure *structure;
- gint depth, pitch;
-
- structure = gst_caps_get_structure (caps, 0);
-
- GST_DEBUG_OBJECT (visual, "src pad got caps %" GST_PTR_FORMAT, caps);
-
- if (!gst_structure_get_int (structure, "width", &visual->width))
- goto error;
- if (!gst_structure_get_int (structure, "height", &visual->height))
- goto error;
- if (!gst_structure_get_int (structure, "bpp", &depth))
- goto error;
- if (!gst_structure_get_fraction (structure, "framerate", &visual->fps_n,
- &visual->fps_d))
- goto error;
-
- visual_video_set_depth (visual->video,
- visual_video_depth_enum_from_value (depth));
- visual_video_set_dimension (visual->video, visual->width, visual->height);
- pitch = GST_ROUND_UP_4 (visual->width * visual->video->bpp);
- visual_video_set_pitch (visual->video, pitch);
- visual_actor_video_negotiate (visual->actor, 0, FALSE, FALSE);
-
- /* precalc some values */
- visual->outsize = visual->video->height * pitch;
- visual->spf =
- gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
- visual->duration =
- gst_util_uint64_scale_int (GST_SECOND, visual->fps_d, visual->fps_n);
-
- gst_object_unref (visual);
- return TRUE;
-
- /* ERRORS */
-error:
- {
- GST_DEBUG_OBJECT (visual, "error parsing caps");
- gst_object_unref (visual);
- return FALSE;
- }
-}
-
-static gboolean
-gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps)
-{
- GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
- GstStructure *structure;
-
- structure = gst_caps_get_structure (caps, 0);
-
- gst_structure_get_int (structure, "channels", &visual->channels);
- gst_structure_get_int (structure, "rate", &visual->rate);
-
- /* this is how many samples we need to fill one frame at the requested
- * framerate. */
- if (visual->fps_n != 0) {
- visual->spf =
- gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
- }
- visual->bps = visual->channels * sizeof (gint16);
-
- gst_object_unref (visual);
- return TRUE;
-}
-
-static gboolean
-gst_vis_src_negotiate (GstVisual * visual)
-{
- GstCaps *othercaps, *target, *intersect;
- GstStructure *structure;
- GstCaps *caps;
-
- caps = gst_pad_get_caps (visual->srcpad);
-
- /* see what the peer can do */
- othercaps = gst_pad_peer_get_caps (visual->srcpad);
- if (othercaps) {
- intersect = gst_caps_intersect (othercaps, caps);
- gst_caps_unref (othercaps);
- gst_caps_unref (caps);
-
- if (gst_caps_is_empty (intersect))
- goto no_format;
-
- target = gst_caps_copy_nth (intersect, 0);
- gst_caps_unref (intersect);
- } else {
- /* need a copy, we'll be modifying it when fixating */
- target = gst_caps_copy (caps);
- gst_caps_unref (caps);
- }
-
- /* fixate in case something is not fixed. This does nothing if the value is
- * already fixed. For video we always try to fixate to something like
- * 320x240x30 by convention. */
- structure = gst_caps_get_structure (target, 0);
- gst_structure_fixate_field_nearest_int (structure, "width", 320);
- gst_structure_fixate_field_nearest_int (structure, "height", 240);
- gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
-
- gst_pad_set_caps (visual->srcpad, target);
- gst_caps_unref (target);
-
- return TRUE;
-
- /* ERRORS */
-no_format:
- {
- GST_ELEMENT_ERROR (visual, STREAM, FORMAT, (NULL),
- ("could not negotiate output format"));
- gst_caps_unref (intersect);
- return FALSE;
- }
-}
-
-static gboolean
-gst_visual_sink_event (GstPad * pad, GstEvent * event)
-{
- GstVisual *visual;
- gboolean res;
-
- visual = GST_VISUAL (gst_pad_get_parent (pad));
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_FLUSH_START:
- res = gst_pad_push_event (visual->srcpad, event);
- break;
- case GST_EVENT_FLUSH_STOP:
- /* reset QoS and adapter. */
- gst_visual_reset (visual);
- res = gst_pad_push_event (visual->srcpad, event);
- break;
- case GST_EVENT_NEWSEGMENT:
- {
- GstFormat format;
- gdouble rate, arate;
- gint64 start, stop, time;
- gboolean update;
-
- /* the newsegment values are used to clip the input samples
- * and to convert the incomming timestamps to running time so
- * we can do QoS */
- gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
- &start, &stop, &time);
-
- /* now configure the values */
- gst_segment_set_newsegment_full (&visual->segment, update,
- rate, arate, format, start, stop, time);
-
- /* and forward */
- res = gst_pad_push_event (visual->srcpad, event);
- break;
- }
- default:
- res = gst_pad_push_event (visual->srcpad, event);
- break;
- }
-
- gst_object_unref (visual);
- return res;
-}
-
-static gboolean
-gst_visual_src_event (GstPad * pad, GstEvent * event)
-{
- GstVisual *visual;
- gboolean res;
-
- visual = GST_VISUAL (gst_pad_get_parent (pad));
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_QOS:
- {
- gdouble proportion;
- GstClockTimeDiff diff;
- GstClockTime timestamp;
-
- gst_event_parse_qos (event, &proportion, &diff, ×tamp);
-
- /* save stuff for the _chain function */
- GST_OBJECT_LOCK (visual);
- visual->proportion = proportion;
- if (diff >= 0)
- /* we're late, this is a good estimate for next displayable
- * frame (see part-qos.txt) */
- visual->earliest_time = timestamp + 2 * diff + visual->duration;
- else
- visual->earliest_time = timestamp + diff;
-
- GST_OBJECT_UNLOCK (visual);
-
- res = gst_pad_push_event (visual->sinkpad, event);
- break;
- }
- default:
- res = gst_pad_push_event (visual->sinkpad, event);
- break;
- }
-
- gst_object_unref (visual);
- return res;
-}
-
-/* allocate and output buffer, if no format was negotiated, this
- * function will negotiate one. After calling this function, a
- * reverse negotiation could have happened. */
-static GstFlowReturn
-get_buffer (GstVisual * visual, GstBuffer ** outbuf)
-{
- GstFlowReturn ret;
-
- /* we don't know an output format yet, pick one */
- if (GST_PAD_CAPS (visual->srcpad) == NULL) {
- if (!gst_vis_src_negotiate (visual))
- return GST_FLOW_NOT_NEGOTIATED;
- }
-
- GST_DEBUG_OBJECT (visual, "allocating output buffer with caps %"
- GST_PTR_FORMAT, GST_PAD_CAPS (visual->srcpad));
-
- /* now allocate a buffer with the last negotiated format.
- * Downstream could renegotiate a new format, which will trigger
- * our setcaps function on the source pad. */
- ret =
- gst_pad_alloc_buffer_and_set_caps (visual->srcpad,
- GST_BUFFER_OFFSET_NONE, visual->outsize,
- GST_PAD_CAPS (visual->srcpad), outbuf);
-
- /* no buffer allocated, we don't care why. */
- if (ret != GST_FLOW_OK)
- return ret;
-
- return GST_FLOW_OK;
-}
-
-static GstFlowReturn
-gst_visual_chain (GstPad * pad, GstBuffer * buffer)
-{
- GstBuffer *outbuf = NULL;
- guint i;
- GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
- GstFlowReturn ret = GST_FLOW_OK;
- guint avail;
-
- GST_DEBUG_OBJECT (visual, "chain function called");
-
- /* If we don't have an output format yet, preallocate a buffer to try and
- * set one */
- if (GST_PAD_CAPS (visual->srcpad) == NULL) {
- ret = get_buffer (visual, &outbuf);
- if (ret != GST_FLOW_OK) {
- gst_buffer_unref (buffer);
- goto beach;
- }
- }
-
- /* resync on DISCONT */
- if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
- gst_adapter_clear (visual->adapter);
- visual->next_ts = -1;
- }
-
- /* Match timestamps from the incoming audio */
- if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE)
- visual->next_ts = GST_BUFFER_TIMESTAMP (buffer);
-
- GST_DEBUG_OBJECT (visual,
- "Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
- GST_BUFFER_SIZE (buffer) / visual->bps, GST_BUFFER_TIMESTAMP (buffer));
-
- gst_adapter_push (visual->adapter, buffer);
-
- while (TRUE) {
- gboolean need_skip;
- const guint16 *data;
-
- GST_DEBUG_OBJECT (visual, "processing buffer");
-
- avail = gst_adapter_available (visual->adapter);
- GST_DEBUG_OBJECT (visual, "avail now %u", avail);
-
- /* we need at least 512 samples */
- if (avail < 512 * visual->bps)
- break;
-
- /* we need at least enough samples to make one frame */
- if (avail < visual->spf * visual->bps)
- break;
-
- if (visual->next_ts != -1) {
- gint64 qostime;
-
- /* QoS is done on running time */
- qostime = gst_segment_to_running_time (&visual->segment, GST_FORMAT_TIME,
- visual->next_ts);
-
- GST_OBJECT_LOCK (visual);
- /* check for QoS, don't compute buffers that are known to be late */
- need_skip = visual->earliest_time != -1 &&
- qostime <= visual->earliest_time;
- GST_OBJECT_UNLOCK (visual);
-
- if (need_skip) {
- GST_WARNING_OBJECT (visual,
- "QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
- GST_TIME_ARGS (qostime), GST_TIME_ARGS (visual->earliest_time));
- goto skip;
- }
- }
-
- /* Read 512 samples per channel */
- data =
- (const guint16 *) gst_adapter_peek (visual->adapter, 512 * visual->bps);
-
-#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
- {
- VisBuffer *lbuf, *rbuf;
- guint16 ldata[512], rdata[512];
- VisAudioSampleRateType rate;
-
- lbuf = visual_buffer_new_with_buffer (ldata, sizeof (ldata), NULL);
- rbuf = visual_buffer_new_with_buffer (rdata, sizeof (rdata), NULL);
-
- if (visual->channels == 2) {
- for (i = 0; i < 512; i++) {
- ldata[i] = *data++;
- rdata[i] = *data++;
- }
- } else {
- for (i = 0; i < 512; i++) {
- ldata[i] = *data;
- rdata[i] = *data++;
- }
- }
-
- switch (visual->rate) {
- case 8000:
- rate = VISUAL_AUDIO_SAMPLE_RATE_8000;
- break;
- case 11250:
- rate = VISUAL_AUDIO_SAMPLE_RATE_11250;
- break;
- case 22500:
- rate = VISUAL_AUDIO_SAMPLE_RATE_22500;
- break;
- case 32000:
- rate = VISUAL_AUDIO_SAMPLE_RATE_32000;
- break;
- case 44100:
- rate = VISUAL_AUDIO_SAMPLE_RATE_44100;
- break;
- case 48000:
- rate = VISUAL_AUDIO_SAMPLE_RATE_48000;
- break;
- case 96000:
- rate = VISUAL_AUDIO_SAMPLE_RATE_96000;
- break;
- default:
- visual_object_unref (VISUAL_OBJECT (lbuf));
- visual_object_unref (VISUAL_OBJECT (rbuf));
- GST_ERROR_OBJECT (visual, "unsupported rate %d", visual->rate);
- ret = GST_FLOW_ERROR;
- goto beach;
- break;
- }
-
- visual_audio_samplepool_input_channel (visual->audio->samplepool,
- lbuf,
- rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_CHANNEL_LEFT);
- visual_audio_samplepool_input_channel (visual->audio->samplepool,
- rbuf,
- rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_CHANNEL_RIGHT);
-
- visual_object_unref (VISUAL_OBJECT (lbuf));
- visual_object_unref (VISUAL_OBJECT (rbuf));
-
- }
-#else
- if (visual->channels == 2) {
- for (i = 0; i < 512; i++) {
- visual->audio->plugpcm[0][i] = *data++;
- visual->audio->plugpcm[1][i] = *data++;
- }
- } else {
- for (i = 0; i < 512; i++) {
- visual->audio->plugpcm[0][i] = *data;
- visual->audio->plugpcm[1][i] = *data++;
- }
- }
-#endif
-
- /* alloc a buffer if we don't have one yet, this happens
- * when we pushed a buffer in this while loop before */
- if (outbuf == NULL) {
- ret = get_buffer (visual, &outbuf);
- if (ret != GST_FLOW_OK) {
- goto beach;
- }
- }
- visual_video_set_buffer (visual->video, GST_BUFFER_DATA (outbuf));
- visual_audio_analyze (visual->audio);
- visual_actor_run (visual->actor, visual->audio);
- visual_video_set_buffer (visual->video, NULL);
- GST_DEBUG_OBJECT (visual, "rendered one frame");
-
- GST_BUFFER_TIMESTAMP (outbuf) = visual->next_ts;
- GST_BUFFER_DURATION (outbuf) = visual->duration;
-
- ret = gst_pad_push (visual->srcpad, outbuf);
- outbuf = NULL;
-
- skip:
- /* interpollate next timestamp */
- if (visual->next_ts != -1)
- visual->next_ts += visual->duration;
-
- GST_DEBUG_OBJECT (visual, "finished frame, flushing %u samples from input",
- visual->spf);
-
- /* Flush out the number of samples per frame */
- gst_adapter_flush (visual->adapter, visual->spf * visual->bps);
-
- /* quit the loop if something was wrong */
- if (ret != GST_FLOW_OK)
- break;
- }
-
-beach:
-
- if (outbuf != NULL)
- gst_buffer_unref (outbuf);
-
- gst_object_unref (visual);
-
- return ret;
-}
-
-static GstStateChangeReturn
-gst_visual_change_state (GstElement * element, GstStateChange transition)
-{
- GstVisual *visual = GST_VISUAL (element);
- GstStateChangeReturn ret;
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- visual->actor =
- visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->info->
- plugname);
- visual->video = visual_video_new ();
- visual->audio = visual_audio_new ();
- /* can't have a play without actors */
- if (!visual->actor || !visual->video)
- goto no_actors;
-
- if (visual_actor_realize (visual->actor) != 0)
- goto no_realize;
-
- visual_actor_set_video (visual->actor, visual->video);
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- gst_visual_reset (visual);
- break;
- case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- switch (transition) {
- case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- gst_visual_clear_actors (visual);
- break;
- default:
- break;
- }
-
- return ret;
-
- /* ERRORS */
-no_actors:
- {
- GST_ELEMENT_ERROR (visual, LIBRARY, INIT, (NULL),
- ("could not create actors"));
- gst_visual_clear_actors (visual);
- return GST_STATE_CHANGE_FAILURE;
- }
-no_realize:
- {
- GST_ELEMENT_ERROR (visual, LIBRARY, INIT, (NULL),
- ("could not realize actor"));
- gst_visual_clear_actors (visual);
- return GST_STATE_CHANGE_FAILURE;
- }
-}
-
-static void
-make_valid_name (char *name)
-{
- /*
- * Replace invalid chars with _ in the type name
- */
- static const gchar extra_chars[] = "-_+";
- gchar *p = name;
-
- for (; *p; p++) {
- int valid = ((p[0] >= 'A' && p[0] <= 'Z') ||
- (p[0] >= 'a' && p[0] <= 'z') ||
- (p[0] >= '0' && p[0] <= '9') || strchr (extra_chars, p[0]));
- if (!valid)
- *p = '_';
- }
-}
-
-static gboolean
-gst_visual_actor_plugin_is_gl (VisObject * plugin, const gchar * name)
-{
- gboolean is_gl;
- gint depth;
-
-#if !defined(VISUAL_API_VERSION)
-
- depth = VISUAL_PLUGIN_ACTOR (plugin)->depth;
- is_gl = (depth == VISUAL_VIDEO_DEPTH_GL);
-
-#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
-
- depth = VISUAL_ACTOR_PLUGIN (plugin)->vidoptions.depth;
- /* FIXME: how to figure this out correctly in 0.4? */
- is_gl = (depth & VISUAL_VIDEO_DEPTH_GL) == VISUAL_VIDEO_DEPTH_GL;
-
-#else
-# error what libvisual version is this?
-#endif
-
- if (!is_gl) {
- GST_DEBUG ("plugin %s is not a GL plugin (%d), registering", name, depth);
- } else {
- GST_DEBUG ("plugin %s is a GL plugin (%d), ignoring", name, depth);
- }
-
- return is_gl;
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- guint i, count;
- VisList *list;
-
- GST_DEBUG_CATEGORY_INIT (libvisual_debug, "libvisual", 0,
- "libvisual audio visualisations");
-
- visual_log_set_verboseness (VISUAL_LOG_VERBOSENESS_LOW);
- visual_log_set_info_handler (libvisual_log_handler, (void *) GST_LEVEL_INFO);
- visual_log_set_warning_handler (libvisual_log_handler,
- (void *) GST_LEVEL_WARNING);
- visual_log_set_critical_handler (libvisual_log_handler,
- (void *) GST_LEVEL_ERROR);
- visual_log_set_error_handler (libvisual_log_handler,
- (void *) GST_LEVEL_ERROR);
-
- if (!visual_is_initialized ())
- if (visual_init (NULL, NULL) != 0)
- return FALSE;
-
- list = visual_actor_get_list ();
-
-#if !defined(VISUAL_API_VERSION)
- count = visual_list_count (list);
-#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
- count = visual_collection_size (VISUAL_COLLECTION (list));
-#endif
-
- for (i = 0; i < count; i++) {
- VisPluginRef *ref = visual_list_get (list, i);
- VisPluginData *visplugin = NULL;
- gboolean skip = FALSE;
- GType type;
- gchar *name;
- GTypeInfo info = {
- sizeof (GstVisualClass),
- NULL,
- NULL,
- gst_visual_class_init,
- NULL,
- ref,
- sizeof (GstVisual),
- 0,
- NULL
- };
-
- visplugin = visual_plugin_load (ref);
-
- if (ref->info->plugname == NULL)
- continue;
-
- /* Blacklist some plugins */
- if (strcmp (ref->info->plugname, "gstreamer") == 0 ||
- strcmp (ref->info->plugname, "gdkpixbuf") == 0) {
- skip = TRUE;
- } else {
- /* Ignore plugins that only support GL output for now */
- skip = gst_visual_actor_plugin_is_gl (visplugin->info->plugin,
- visplugin->info->plugname);
- }
-
- visual_plugin_unload (visplugin);
-
- if (!skip) {
- name = g_strdup_printf ("GstVisual%s", ref->info->plugname);
- make_valid_name (name);
- type = g_type_register_static (GST_TYPE_VISUAL, name, &info, 0);
- g_free (name);
-
- name = g_strdup_printf ("libvisual_%s", ref->info->plugname);
- make_valid_name (name);
- if (!gst_element_register (plugin, name, GST_RANK_NONE, type)) {
- g_free (name);
- return FALSE;
- }
- g_free (name);
- }
- }
-
- return TRUE;
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "libvisual",
- "libvisual visualization plugins",
- plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)