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ext/ffmpeg/gstffmpegdec.c: Implement B-frame skipping and low-resolution decoding (useful for very slow CPUs).
Original commit message from CVS: * ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_lowres_get_type), (gst_ffmpegdec_skipframe_get_type), (gst_ffmpegdec_class_init), (gst_ffmpegdec_init), (gst_ffmpegdec_connect), (gst_ffmpegdec_frame), (gst_ffmpegdec_set_property), (gst_ffmpegdec_get_property): Implement B-frame skipping and low-resolution decoding (useful for very slow CPUs).
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2 changed files with 131 additions and 15 deletions
10
ChangeLog
10
ChangeLog
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@ -1,3 +1,13 @@
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2005-01-31 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_lowres_get_type),
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(gst_ffmpegdec_skipframe_get_type), (gst_ffmpegdec_class_init),
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(gst_ffmpegdec_init), (gst_ffmpegdec_connect),
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(gst_ffmpegdec_frame), (gst_ffmpegdec_set_property),
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(gst_ffmpegdec_get_property):
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Implement B-frame skipping and low-resolution decoding (useful
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for very slow CPUs).
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2005-01-28 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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2005-01-28 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_register):
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* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_register):
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@ -64,6 +64,8 @@ struct _GstFFMpegDec
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GstBuffer *pcache;
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GstBuffer *pcache;
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GValue *par; /* pixel aspect ratio of incoming data */
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GValue *par; /* pixel aspect ratio of incoming data */
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gint hurry_up, lowres;
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};
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};
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typedef struct _GstFFMpegDecClass GstFFMpegDecClass;
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typedef struct _GstFFMpegDecClass GstFFMpegDecClass;
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@ -95,16 +97,11 @@ struct _GstFFMpegDecClassParams
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#define GST_IS_FFMPEGDEC_CLASS(obj) \
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#define GST_IS_FFMPEGDEC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGDEC))
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGDEC))
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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enum
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{
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{
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ARG_0,
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ARG_0,
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/* FILL ME */
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ARG_LOWRES,
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ARG_SKIPFRAME
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};
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};
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static GHashTable *global_plugins;
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static GHashTable *global_plugins;
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@ -125,6 +122,11 @@ static void gst_ffmpegdec_chain (GstPad * pad, GstData * data);
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static GstElementStateReturn gst_ffmpegdec_change_state (GstElement * element);
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static GstElementStateReturn gst_ffmpegdec_change_state (GstElement * element);
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static void gst_ffmpegdec_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_ffmpegdec_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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#if 0
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#if 0
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/* some sort of bufferpool handling, but different */
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/* some sort of bufferpool handling, but different */
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static int gst_ffmpegdec_get_buffer (AVCodecContext * context,
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static int gst_ffmpegdec_get_buffer (AVCodecContext * context,
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@ -135,7 +137,48 @@ static void gst_ffmpegdec_release_buffer (AVCodecContext * context,
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static GstElementClass *parent_class = NULL;
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static GstElementClass *parent_class = NULL;
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/*static guint gst_ffmpegdec_signals[LAST_SIGNAL] = { 0 }; */
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#define GST_FFMPEGDEC_TYPE_LOWRES (gst_ffmpegdec_lowres_get_type())
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static GType
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gst_ffmpegdec_lowres_get_type (void)
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{
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static GType ffmpegdec_lowres_type = 0;
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if (!ffmpegdec_lowres_type) {
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static GEnumValue ffmpegdec_lowres[] = {
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{0, "0", "full"},
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{1, "1", "1/2-size"},
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{2, "2", "1/4-size"},
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{0, NULL, NULL},
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};
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ffmpegdec_lowres_type =
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g_enum_register_static ("GstFFMpegDecLowres", ffmpegdec_lowres);
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}
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return ffmpegdec_lowres_type;
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}
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#define GST_FFMPEGDEC_TYPE_SKIPFRAME (gst_ffmpegdec_skipframe_get_type())
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static GType
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gst_ffmpegdec_skipframe_get_type (void)
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{
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static GType ffmpegdec_skipframe_type = 0;
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if (!ffmpegdec_skipframe_type) {
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static GEnumValue ffmpegdec_skipframe[] = {
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{0, "0", "Skip nothing"},
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{1, "1", "Skip B-frames"},
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{2, "2", "Skip IDCT/Dequantization"},
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{5, "5", "Skip everything"},
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{0, NULL, NULL},
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};
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ffmpegdec_skipframe_type =
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g_enum_register_static ("GstFFMpegDecSkipFrame", ffmpegdec_skipframe);
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}
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return ffmpegdec_skipframe_type;
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}
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static void
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static void
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gst_ffmpegdec_base_init (GstFFMpegDecClass * klass)
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gst_ffmpegdec_base_init (GstFFMpegDecClass * klass)
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@ -183,15 +226,23 @@ gst_ffmpegdec_base_init (GstFFMpegDecClass * klass)
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static void
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static void
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gst_ffmpegdec_class_init (GstFFMpegDecClass * klass)
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gst_ffmpegdec_class_init (GstFFMpegDecClass * klass)
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{
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{
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GObjectClass *gobject_class;
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class;
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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parent_class = g_type_class_peek_parent (klass);
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g_object_class_install_property (gobject_class, ARG_SKIPFRAME,
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g_param_spec_enum ("skip-frame", "Skip frames",
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"Which types of frames to skip during decoding",
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GST_FFMPEGDEC_TYPE_SKIPFRAME, 0, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_LOWRES,
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g_param_spec_enum ("lowres", "Low resolution",
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"At which resolution to decode images",
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GST_FFMPEGDEC_TYPE_LOWRES, 0, G_PARAM_READWRITE));
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gobject_class->dispose = gst_ffmpegdec_dispose;
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gobject_class->dispose = gst_ffmpegdec_dispose;
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gobject_class->set_property = gst_ffmpegdec_set_property;
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gobject_class->get_property = gst_ffmpegdec_get_property;
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gstelement_class->change_state = gst_ffmpegdec_change_state;
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gstelement_class->change_state = gst_ffmpegdec_change_state;
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}
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}
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@ -218,12 +269,11 @@ gst_ffmpegdec_init (GstFFMpegDec * ffmpegdec)
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/* some ffmpeg data */
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/* some ffmpeg data */
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ffmpegdec->context = avcodec_alloc_context ();
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ffmpegdec->context = avcodec_alloc_context ();
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ffmpegdec->picture = avcodec_alloc_frame ();
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ffmpegdec->picture = avcodec_alloc_frame ();
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ffmpegdec->pctx = NULL;
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ffmpegdec->pctx = NULL;
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ffmpegdec->pcache = NULL;
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ffmpegdec->pcache = NULL;
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ffmpegdec->par = NULL;
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ffmpegdec->par = NULL;
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ffmpegdec->opened = FALSE;
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ffmpegdec->opened = FALSE;
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ffmpegdec->hurry_up = ffmpegdec->lowres = 0;
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GST_FLAG_SET (ffmpegdec, GST_ELEMENT_EVENT_AWARE);
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GST_FLAG_SET (ffmpegdec, GST_ELEMENT_EVENT_AWARE);
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}
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}
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/* workaround encoder bugs */
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/* workaround encoder bugs */
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ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
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ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
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/* for slow cpus */
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ffmpegdec->context->lowres = ffmpegdec->lowres;
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ffmpegdec->context->hurry_up = ffmpegdec->hurry_up;
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/* open codec - we don't select an output pix_fmt yet,
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/* open codec - we don't select an output pix_fmt yet,
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* simply because we don't know! We only get it
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* simply because we don't know! We only get it
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* during playback... */
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* during playback... */
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switch (oclass->in_plugin->type) {
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switch (oclass->in_plugin->type) {
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case CODEC_TYPE_VIDEO:
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case CODEC_TYPE_VIDEO:
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ffmpegdec->picture->pict_type = -1; /* in case we skip frames */
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len = avcodec_decode_video (ffmpegdec->context,
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len = avcodec_decode_video (ffmpegdec->context,
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ffmpegdec->picture, &have_data, data, size);
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ffmpegdec->picture, &have_data, data, size);
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GST_DEBUG_OBJECT (ffmpegdec,
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GST_DEBUG_OBJECT (ffmpegdec,
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ffmpegdec->context->frame_rate_base /
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ffmpegdec->context->frame_rate_base /
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ffmpegdec->context->frame_rate;
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ffmpegdec->context->frame_rate;
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ffmpegdec->next_ts += GST_BUFFER_DURATION (outbuf);
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ffmpegdec->next_ts += GST_BUFFER_DURATION (outbuf);
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} else if (ffmpegdec->picture->pict_type != -1) {
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/* update time for skip-frame */
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if (ffmpegdec->picture->pict_type == FF_I_TYPE &&
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GST_CLOCK_TIME_IS_VALID (*in_ts) &&
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ffmpegdec->context->frame_rate > 0) {
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ffmpegdec->next_ts = *in_ts;
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} else {
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ffmpegdec->next_ts += GST_SECOND *
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ffmpegdec->context->frame_rate_base /
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ffmpegdec->context->frame_rate;
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}
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}
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}
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break;
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break;
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return GST_STATE_SUCCESS;
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return GST_STATE_SUCCESS;
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}
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}
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static void
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gst_ffmpegdec_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstFFMpegDec *ffmpegdec = (GstFFMpegDec *) object;
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switch (prop_id) {
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case ARG_LOWRES:
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ffmpegdec->lowres = ffmpegdec->context->lowres =
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g_value_get_enum (value);
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break;
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case ARG_SKIPFRAME:
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ffmpegdec->hurry_up = ffmpegdec->context->hurry_up =
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g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_ffmpegdec_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstFFMpegDec *ffmpegdec = (GstFFMpegDec *) object;
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switch (prop_id) {
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case ARG_LOWRES:
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g_value_set_enum (value, ffmpegdec->context->lowres);
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break;
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case ARG_SKIPFRAME:
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g_value_set_enum (value, ffmpegdec->context->hurry_up);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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gboolean
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gboolean
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gst_ffmpegdec_register (GstPlugin * plugin)
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gst_ffmpegdec_register (GstPlugin * plugin)
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{
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{
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