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avviddec: Use interlaced-mode=interleaved and set field-order if possible

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=771376
This commit is contained in:
Sebastian Dröge 2016-09-29 15:35:01 +03:00
parent d2e65754b3
commit 5e61a8999f
2 changed files with 65 additions and 6 deletions
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68
ext/libav/gstavviddec.c
View file

@ -433,6 +433,9 @@ gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
ffmpegdec->pic_height = 0;
ffmpegdec->pic_par_n = 0;
ffmpegdec->pic_par_d = 0;
ffmpegdec->pic_interlaced = 0;
ffmpegdec->pic_field_order = 0;
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
@ -881,12 +884,22 @@ no_frame:
static gboolean
picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
{
gint pic_field_order = 0;
if (picture->interlaced_frame) {
if (picture->repeat_pict)
pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
if (picture->top_field_first)
pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
}
return !(ffmpegdec->pic_width == picture->width
&& ffmpegdec->pic_height == picture->height
&& ffmpegdec->pic_pix_fmt == picture->format
&& ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
&& ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
&& ffmpegdec->pic_interlaced == picture->interlaced_frame);
&& ffmpegdec->pic_interlaced == picture->interlaced_frame
&& ffmpegdec->pic_field_order == pic_field_order);
}
static gboolean
@ -901,6 +914,15 @@ static gboolean
update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
AVFrame * picture)
{
gint pic_field_order = 0;
if (picture->interlaced_frame) {
if (picture->repeat_pict)
pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
if (picture->top_field_first)
pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
}
if (!picture_changed (ffmpegdec, picture)
&& !context_changed (ffmpegdec, context))
return FALSE;
@ -921,7 +943,21 @@ update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
ffmpegdec->pic_height = picture->height;
ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
/* Remember if we have interlaced content and the field order changed
* at least once. If that happens, we must be interlaced-mode=mixed
*/
if (ffmpegdec->pic_field_order_changed ||
(ffmpegdec->pic_field_order != pic_field_order &&
ffmpegdec->pic_interlaced))
ffmpegdec->pic_field_order_changed = TRUE;
ffmpegdec->pic_field_order = pic_field_order;
ffmpegdec->pic_interlaced = picture->interlaced_frame;
if (!ffmpegdec->pic_interlaced)
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = context->ticks_per_frame;
ffmpegdec->ctx_time_n = context->time_base.num;
ffmpegdec->ctx_time_d = context->time_base.den;
@ -1032,13 +1068,27 @@ gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
out_info = &ffmpegdec->output_state->info;
/* set the interlaced flag */
if (ffmpegdec->pic_interlaced)
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
else
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
in_s = gst_caps_get_structure (ffmpegdec->input_state->caps, 0);
if (!gst_structure_has_field (in_s, "interlace-mode")) {
if (ffmpegdec->pic_interlaced) {
if (ffmpegdec->pic_field_order_changed ||
(ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_RFF)) {
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
} else {
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
if ((ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_TFF))
GST_VIDEO_INFO_FIELD_ORDER (out_info) =
GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
else
GST_VIDEO_INFO_FIELD_ORDER (out_info) =
GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
}
} else {
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
}
}
if (!gst_structure_has_field (in_s, "chroma-site")) {
switch (context->chroma_sample_location) {
case AVCHROMA_LOC_LEFT:
@ -1224,6 +1274,9 @@ negotiate_failed:
ffmpegdec->pic_height = 0;
ffmpegdec->pic_par_n = 0;
ffmpegdec->pic_par_d = 0;
ffmpegdec->pic_interlaced = 0;
ffmpegdec->pic_field_order = 0;
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
@ -1841,6 +1894,9 @@ gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
ffmpegdec->pic_height = 0;
ffmpegdec->pic_par_n = 0;
ffmpegdec->pic_par_d = 0;
ffmpegdec->pic_interlaced = 0;
ffmpegdec->pic_field_order = 0;
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;

3
ext/libav/gstavviddec.h
View file

@ -47,6 +47,9 @@ struct _GstFFMpegVidDec
gint pic_par_n;
gint pic_par_d;
gint pic_interlaced;
/* GST_VIDEO_BUFFER_FLAG_RFF | GST_VIDEO_BUFFER_FLAG_TFF */
gint pic_field_order;
gboolean pic_field_order_changed;
/* current context */
gint ctx_ticks;
gint ctx_time_d;