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libav: fix palette support again

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This commit is contained in:
Wim Taymans 2012-12-12 09:48:53 +01:00
parent 736bda7350
commit 4c46f11d5f
2 changed files with 35 additions and 2 deletions
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36
ext/libav/gstavviddec.c
View file

@ -287,6 +287,8 @@ gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec)
gst_ffmpeg_avcodec_close (ffmpegdec->context);
ffmpegdec->opened = FALSE;
gst_buffer_replace (&ffmpegdec->palette, NULL);
if (ffmpegdec->context->extradata) {
av_free (ffmpegdec->context->extradata);
ffmpegdec->context->extradata = NULL;
@ -334,6 +336,25 @@ could_not_open:
}
}
static void
gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecState * state)
{
GstStructure *str = gst_caps_get_structure (state->caps, 0);
const GValue *palette_v;
GstBuffer *palette;
/* do we have a palette? */
if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
palette = gst_value_get_buffer (palette_v);
GST_DEBUG ("got palette data %p", palette);
if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
gst_buffer_replace (&ffmpegdec->palette, palette);
}
}
}
static gboolean
gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state)
@ -389,6 +410,8 @@ gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
ffmpegdec->context->height);
gst_ffmpegviddec_get_palette (ffmpegdec, state);
if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
ffmpegdec->context->time_base.num = 1;
@ -1061,6 +1084,15 @@ gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
/* now decode the frame */
gst_avpacket_init (&packet, data, size);
if (ffmpegdec->palette) {
guint8 *pal;
pal = av_packet_new_side_data (&packet, AV_PKT_DATA_PALETTE,
AVPALETTE_SIZE);
gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
}
len = avcodec_decode_video2 (ffmpegdec->context,
ffmpegdec->picture, &have_data, &packet);
@ -1456,8 +1488,8 @@ gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
linesize_align);
edge =
ffmpegdec->context->
flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width ();
ffmpegdec->
context->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width ();
/* increase the size for the padding */
width += edge << 1;
height += edge << 1;

1
ext/libav/gstavviddec.h
View file

@ -49,6 +49,7 @@ struct _GstFFMpegVidDec
gint ctx_time_d;
gint ctx_time_n;
gint ctx_interlaced;
GstBuffer *palette;
guint8 *padded;
guint padded_size;