gst_plugins_good/ext/jpeg/gstsmokeenc.c
changeset 27 d43ce56a1534
parent 23 29ecd5cb86b3
child 31 aec498aab1d3
--- a/gst_plugins_good/ext/jpeg/gstsmokeenc.c	Tue Jul 06 14:35:10 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,412 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- *
- * 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 <string.h>
-
-#include "gstsmokeenc.h"
-#include <gst/video/video.h>
-
-/* elementfactory information */
-static const GstElementDetails gst_smokeenc_details =
-GST_ELEMENT_DETAILS ("Smoke video encoder",
-    "Codec/Encoder/Video",
-    "Encode images into the Smoke format",
-    "Wim Taymans <wim@fluendo.com>");
-
-GST_DEBUG_CATEGORY (smokeenc_debug);
-#define GST_CAT_DEFAULT smokeenc_debug
-
-#define SMOKEENC_DEFAULT_MIN_QUALITY 10
-#define SMOKEENC_DEFAULT_MAX_QUALITY 85
-#define SMOKEENC_DEFAULT_THRESHOLD 3000
-#define SMOKEENC_DEFAULT_KEYFRAME 20
-
-/* SmokeEnc signals and args */
-enum
-{
-  FRAME_ENCODED,
-  /* FILL ME */
-  LAST_SIGNAL
-};
-
-enum
-{
-  ARG_0,
-  ARG_MIN_QUALITY,
-  ARG_MAX_QUALITY,
-  ARG_THRESHOLD,
-  ARG_KEYFRAME
-      /* FILL ME */
-};
-
-static void gst_smokeenc_base_init (gpointer g_class);
-static void gst_smokeenc_class_init (GstSmokeEnc * klass);
-static void gst_smokeenc_init (GstSmokeEnc * smokeenc);
-
-static GstFlowReturn gst_smokeenc_chain (GstPad * pad, GstBuffer * buf);
-static gboolean gst_smokeenc_setcaps (GstPad * pad, GstCaps * caps);
-static GstCaps *gst_smokeenc_getcaps (GstPad * pad);
-
-static void gst_smokeenc_resync (GstSmokeEnc * smokeenc);
-static void gst_smokeenc_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_smokeenc_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-
-static GstElementClass *parent_class = NULL;
-
-//static guint gst_smokeenc_signals[LAST_SIGNAL] = { 0 };
-
-GType
-gst_smokeenc_get_type (void)
-{
-  static GType smokeenc_type = 0;
-
-  if (!smokeenc_type) {
-    static const GTypeInfo smokeenc_info = {
-      sizeof (GstSmokeEncClass),
-      (GBaseInitFunc) gst_smokeenc_base_init,
-      NULL,
-      (GClassInitFunc) gst_smokeenc_class_init,
-      NULL,
-      NULL,
-      sizeof (GstSmokeEnc),
-      0,
-      (GInstanceInitFunc) gst_smokeenc_init,
-    };
-
-    smokeenc_type =
-        g_type_register_static (GST_TYPE_ELEMENT, "GstSmokeEnc", &smokeenc_info,
-        0);
-  }
-  return smokeenc_type;
-}
-
-static GstStaticPadTemplate gst_smokeenc_sink_pad_template =
-GST_STATIC_PAD_TEMPLATE ("sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-    );
-
-static GstStaticPadTemplate gst_smokeenc_src_pad_template =
-GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("video/x-smoke, "
-        "width = (int) [ 16, 4096 ], "
-        "height = (int) [ 16, 4096 ], " "framerate = (fraction) [ 0/1, MAX ]")
-    );
-
-static void
-gst_smokeenc_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&gst_smokeenc_sink_pad_template));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&gst_smokeenc_src_pad_template));
-  gst_element_class_set_details (element_class, &gst_smokeenc_details);
-}
-
-static void
-gst_smokeenc_class_init (GstSmokeEnc * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = (GObjectClass *) klass;
-  gstelement_class = (GstElementClass *) klass;
-
-  parent_class = g_type_class_peek_parent (klass);
-
-  gobject_class->set_property = gst_smokeenc_set_property;
-  gobject_class->get_property = gst_smokeenc_get_property;
-
-  g_object_class_install_property (gobject_class, ARG_MIN_QUALITY,
-      g_param_spec_int ("qmin", "Qmin", "Minimum quality",
-          0, 100, SMOKEENC_DEFAULT_MIN_QUALITY, G_PARAM_READWRITE));
-  g_object_class_install_property (gobject_class, ARG_MAX_QUALITY,
-      g_param_spec_int ("qmax", "Qmax", "Maximum quality",
-          0, 100, SMOKEENC_DEFAULT_MAX_QUALITY, G_PARAM_READWRITE));
-  g_object_class_install_property (gobject_class, ARG_THRESHOLD,
-      g_param_spec_int ("threshold", "Threshold", "Motion estimation threshold",
-          0, 100000000, SMOKEENC_DEFAULT_THRESHOLD, G_PARAM_READWRITE));
-  g_object_class_install_property (gobject_class, ARG_KEYFRAME,
-      g_param_spec_int ("keyframe", "Keyframe",
-          "Insert keyframe every N frames", 1, 100000,
-          SMOKEENC_DEFAULT_KEYFRAME, G_PARAM_READWRITE));
-
-  GST_DEBUG_CATEGORY_INIT (smokeenc_debug, "smokeenc", 0,
-      "Smoke encoding element");
-}
-
-static void
-gst_smokeenc_init (GstSmokeEnc * smokeenc)
-{
-  /* create the sink and src pads */
-  smokeenc->sinkpad =
-      gst_pad_new_from_static_template (&gst_smokeenc_sink_pad_template,
-      "sink");
-  gst_pad_set_chain_function (smokeenc->sinkpad, gst_smokeenc_chain);
-  gst_pad_set_getcaps_function (smokeenc->sinkpad, gst_smokeenc_getcaps);
-  gst_pad_set_setcaps_function (smokeenc->sinkpad, gst_smokeenc_setcaps);
-  gst_element_add_pad (GST_ELEMENT (smokeenc), smokeenc->sinkpad);
-
-  smokeenc->srcpad =
-      gst_pad_new_from_static_template (&gst_smokeenc_src_pad_template, "src");
-  gst_pad_set_getcaps_function (smokeenc->sinkpad, gst_smokeenc_getcaps);
-  gst_pad_use_fixed_caps (smokeenc->sinkpad);
-  /*gst_pad_set_link_function (smokeenc->sinkpad, gst_smokeenc_link); */
-  gst_element_add_pad (GST_ELEMENT (smokeenc), smokeenc->srcpad);
-
-  /* reset the initial video state */
-  smokeenc->width = 0;
-  smokeenc->height = 0;
-  smokeenc->frame = 0;
-  smokeenc->need_header = TRUE;
-
-  gst_smokeenc_resync (smokeenc);
-
-  smokeenc->min_quality = SMOKEENC_DEFAULT_MIN_QUALITY;
-  smokeenc->max_quality = SMOKEENC_DEFAULT_MAX_QUALITY;
-  smokeenc->threshold = SMOKEENC_DEFAULT_THRESHOLD;
-  smokeenc->keyframe = SMOKEENC_DEFAULT_KEYFRAME;
-}
-
-static GstCaps *
-gst_smokeenc_getcaps (GstPad * pad)
-{
-  GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad));
-  GstPad *otherpad;
-  GstCaps *caps;
-  const char *name;
-  int i;
-  GstStructure *structure = NULL;
-
-  /* we want to proxy properties like width, height and framerate from the
-     other end of the element */
-  otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad;
-  caps = gst_pad_get_allowed_caps (otherpad);
-  if (pad == smokeenc->srcpad) {
-    name = "image/x-smoke";
-  } else {
-    name = "video/x-raw-yuv";
-  }
-  for (i = 0; i < gst_caps_get_size (caps); i++) {
-    structure = gst_caps_get_structure (caps, i);
-
-    gst_structure_set_name (structure, name);
-    gst_structure_remove_field (structure, "format");
-    /* ... but for the sink pad, we only do I420 anyway, so add that */
-    if (pad == smokeenc->sinkpad) {
-      gst_structure_set (structure, "format", GST_TYPE_FOURCC,
-          GST_STR_FOURCC ("I420"), NULL);
-    }
-  }
-
-  gst_object_unref (smokeenc);
-
-  return caps;
-}
-
-static gboolean
-gst_smokeenc_setcaps (GstPad * pad, GstCaps * caps)
-{
-  GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad));
-  GstStructure *structure;
-  gboolean ret = TRUE;
-  GstCaps *othercaps;
-  GstPad *otherpad;
-  const GValue *framerate;
-
-  otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad;
-
-  structure = gst_caps_get_structure (caps, 0);
-  framerate = gst_structure_get_value (structure, "framerate");
-  if (framerate) {
-    smokeenc->fps_num = gst_value_get_fraction_numerator (framerate);
-    smokeenc->fps_denom = gst_value_get_fraction_denominator (framerate);
-  } else {
-    smokeenc->fps_num = 0;
-    smokeenc->fps_denom = 1;
-  }
-
-  gst_structure_get_int (structure, "width", &smokeenc->width);
-  gst_structure_get_int (structure, "height", &smokeenc->height);
-
-  othercaps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
-  gst_caps_set_simple (othercaps,
-      "width", G_TYPE_INT, smokeenc->width,
-      "height", G_TYPE_INT, smokeenc->height,
-      "framerate", GST_TYPE_FRACTION, smokeenc->fps_num, smokeenc->fps_denom,
-      NULL);
-
-  ret = gst_pad_set_caps (smokeenc->srcpad, othercaps);
-  gst_caps_unref (othercaps);
-
-  if (GST_PAD_LINK_SUCCESSFUL (ret)) {
-    gst_smokeenc_resync (smokeenc);
-  }
-
-  gst_object_unref (smokeenc);
-
-  return ret;
-}
-
-static void
-gst_smokeenc_resync (GstSmokeEnc * smokeenc)
-{
-  GST_DEBUG ("gst_smokeenc_resync: resync");
-
-  smokecodec_encode_new (&smokeenc->info, smokeenc->width, smokeenc->height,
-      smokeenc->fps_num, smokeenc->fps_denom);
-  smokecodec_set_quality (smokeenc->info, smokeenc->min_quality,
-      smokeenc->max_quality);
-
-  GST_DEBUG ("gst_smokeenc_resync: resync done");
-}
-
-static GstFlowReturn
-gst_smokeenc_chain (GstPad * pad, GstBuffer * buf)
-{
-  GstSmokeEnc *smokeenc;
-  guchar *data, *outdata;
-  gulong size;
-  gint outsize;
-  guint encsize;
-  GstBuffer *outbuf;
-  SmokeCodecFlags flags;
-  GstFlowReturn ret;
-
-  smokeenc = GST_SMOKEENC (GST_OBJECT_PARENT (pad));
-
-  data = GST_BUFFER_DATA (buf);
-  size = GST_BUFFER_SIZE (buf);
-
-  GST_DEBUG ("gst_smokeenc_chain: got buffer of %ld bytes in '%s'", size,
-      GST_OBJECT_NAME (smokeenc));
-
-  if (smokeenc->need_header) {
-    outbuf = gst_buffer_new ();
-    outsize = 256;
-    outdata = g_malloc (outsize);
-    GST_BUFFER_DATA (outbuf) = outdata;
-    GST_BUFFER_MALLOCDATA (outbuf) = outdata;
-    GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
-    GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
-
-    smokecodec_encode_id (smokeenc->info, outdata, &encsize);
-
-    GST_BUFFER_SIZE (outbuf) = encsize;
-
-    ret = gst_pad_push (smokeenc->srcpad, outbuf);
-
-    smokeenc->need_header = FALSE;
-  }
-
-  outbuf = gst_buffer_new ();
-  outsize = smokeenc->width * smokeenc->height * 3;
-  outdata = g_malloc (outsize);
-  GST_BUFFER_DATA (outbuf) = outdata;
-  GST_BUFFER_MALLOCDATA (outbuf) = outdata;
-  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
-  GST_BUFFER_DURATION (outbuf) =
-      smokeenc->fps_denom * GST_SECOND / smokeenc->fps_num;
-
-  flags = 0;
-  if ((smokeenc->frame % smokeenc->keyframe) == 0) {
-    flags |= SMOKECODEC_KEYFRAME;
-  }
-  smokecodec_set_quality (smokeenc->info, smokeenc->min_quality,
-      smokeenc->max_quality);
-  smokecodec_set_threshold (smokeenc->info, smokeenc->threshold);
-  smokecodec_encode (smokeenc->info, data, flags, outdata, &encsize);
-  gst_buffer_unref (buf);
-
-  GST_BUFFER_SIZE (outbuf) = encsize;
-  GST_BUFFER_OFFSET (outbuf) = smokeenc->frame;
-  GST_BUFFER_OFFSET_END (outbuf) = smokeenc->frame + 1;
-
-  ret = gst_pad_push (smokeenc->srcpad, outbuf);
-
-  smokeenc->frame++;
-
-  return ret;
-}
-
-static void
-gst_smokeenc_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstSmokeEnc *smokeenc;
-
-  g_return_if_fail (GST_IS_SMOKEENC (object));
-  smokeenc = GST_SMOKEENC (object);
-
-  switch (prop_id) {
-    case ARG_MIN_QUALITY:
-      smokeenc->min_quality = g_value_get_int (value);
-      break;
-    case ARG_MAX_QUALITY:
-      smokeenc->max_quality = g_value_get_int (value);
-      break;
-    case ARG_THRESHOLD:
-      smokeenc->threshold = g_value_get_int (value);
-      break;
-    case ARG_KEYFRAME:
-      smokeenc->keyframe = g_value_get_int (value);
-      break;
-    default:
-      break;
-  }
-}
-
-static void
-gst_smokeenc_get_property (GObject * object, guint prop_id, GValue * value,
-    GParamSpec * pspec)
-{
-  GstSmokeEnc *smokeenc;
-
-  g_return_if_fail (GST_IS_SMOKEENC (object));
-  smokeenc = GST_SMOKEENC (object);
-
-  switch (prop_id) {
-    case ARG_MIN_QUALITY:
-      g_value_set_int (value, smokeenc->min_quality);
-      break;
-    case ARG_MAX_QUALITY:
-      g_value_set_int (value, smokeenc->max_quality);
-      break;
-    case ARG_THRESHOLD:
-      g_value_set_int (value, smokeenc->threshold);
-      break;
-    case ARG_KEYFRAME:
-      g_value_set_int (value, smokeenc->keyframe);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}