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ext/ffmpeg/gstffmpegdec.c: Improve pixel aspect ratio handling when both the demuxer and the decoder provide a pixel ...
Original commit message from CVS: * ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_close), (gst_ffmpegdec_setcaps), (gst_ffmpegdec_add_pixel_aspect_ratio), (gst_ffmpegdec_negotiate): Improve pixel aspect ratio handling when both the demuxer and the decoder provide a pixel aspect ratio: if one of the two ratios is 1:1, use the other one; if both are non-1:1, use the one provided by the decoder (fixes matroska starwars test files); also add some locking here and there.
This commit is contained in:
Tim-Philipp Müller
parent
d61b6ce395
commit
85a322a461
2 changed files with 111 additions and 31 deletions
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2005-11-28 Tim-Philipp Müller <tim at centricular dot net>
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* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_close),
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(gst_ffmpegdec_setcaps), (gst_ffmpegdec_add_pixel_aspect_ratio),
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(gst_ffmpegdec_negotiate):
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Improve pixel aspect ratio handling when both the demuxer and the
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decoder provide a pixel aspect ratio: if one of the two ratios is
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1:1, use the other one; if both are non-1:1, use the one provided
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by the decoder (fixes matroska starwars test files); also add some
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locking here and there.
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2005-11-23 Thomas Vander Stichele <thomas at apestaart dot org>
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* configure.ac: back to HEAD
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@ -373,8 +373,10 @@ gst_ffmpegdec_event (GstPad * pad, GstEvent * event)
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static void
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gst_ffmpegdec_close (GstFFMpegDec * ffmpegdec)
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{
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GST_OBJECT_LOCK (ffmpegdec);
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if (!ffmpegdec->opened)
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return;
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goto done;
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if (ffmpegdec->par) {
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g_free (ffmpegdec->par);
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@ -406,6 +408,9 @@ gst_ffmpegdec_close (GstFFMpegDec * ffmpegdec)
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ffmpegdec->format.video.fps_n = -1;
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ffmpegdec->format.video.old_fps_n = -1;
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done:
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GST_OBJECT_UNLOCK (ffmpegdec);
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}
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static gboolean
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@ -469,12 +474,15 @@ gst_ffmpegdec_setcaps (GstPad * pad, GstCaps * caps)
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GstStructure *structure;
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const GValue *par;
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const GValue *fps;
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gboolean ret = TRUE;
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GST_DEBUG ("setcaps called");
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/* close old session */
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gst_ffmpegdec_close (ffmpegdec);
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GST_OBJECT_LOCK (ffmpegdec);
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/* set defaults */
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avcodec_get_context_defaults (ffmpegdec->context);
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@ -496,7 +504,9 @@ gst_ffmpegdec_setcaps (GstPad * pad, GstCaps * caps)
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structure = gst_caps_get_structure (caps, 0);
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par = gst_structure_get_value (structure, "pixel-aspect-ratio");
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if (par) {
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GST_DEBUG_OBJECT (ffmpegdec, "sink caps have pixel-aspect-ratio");
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GST_DEBUG_OBJECT (ffmpegdec, "sink caps have pixel-aspect-ratio of %d:%d",
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gst_value_get_fraction_numerator (par),
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gst_value_get_fraction_denominator (par));
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ffmpegdec->par = g_new0 (GValue, 1);
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gst_value_init_and_copy (ffmpegdec->par, par);
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}
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@ -527,10 +537,12 @@ gst_ffmpegdec_setcaps (GstPad * pad, GstCaps * caps)
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g_free (ffmpegdec->par);
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ffmpegdec->par = NULL;
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}
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return FALSE;
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ret = FALSE;
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}
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return TRUE;
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GST_OBJECT_UNLOCK (ffmpegdec);
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return ret;
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}
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static int
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@ -626,6 +638,78 @@ gst_ffmpegdec_release_buffer (AVCodecContext * context, AVFrame * picture)
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}
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}
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static void
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gst_ffmpegdec_add_pixel_aspect_ratio (GstFFMpegDec * ffmpegdec,
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GstStructure * s)
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{
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gboolean demuxer_par_set = FALSE;
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gboolean decoder_par_set = FALSE;
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gint demuxer_num, demuxer_denom;
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gint decoder_num, decoder_denom;
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GST_OBJECT_LOCK (ffmpegdec);
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if (ffmpegdec->par) {
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demuxer_num = gst_value_get_fraction_numerator (ffmpegdec->par);
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demuxer_denom = gst_value_get_fraction_denominator (ffmpegdec->par);
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demuxer_par_set = TRUE;
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GST_DEBUG ("Demuxer PAR: %d:%d", demuxer_num, demuxer_denom);
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}
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if (ffmpegdec->context->sample_aspect_ratio.num &&
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ffmpegdec->context->sample_aspect_ratio.den) {
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decoder_num = ffmpegdec->context->sample_aspect_ratio.num;
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decoder_denom = ffmpegdec->context->sample_aspect_ratio.den;
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decoder_par_set = TRUE;
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GST_DEBUG ("Decoder PAR: %d:%d", decoder_num, decoder_denom);
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}
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GST_OBJECT_UNLOCK (ffmpegdec);
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if (!demuxer_par_set && !decoder_par_set) {
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GST_DEBUG ("Neither demuxer nor codec provide a pixel-aspect-ratio");
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return;
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}
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if (demuxer_par_set && !decoder_par_set)
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goto use_demuxer_par;
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if (decoder_par_set && !demuxer_par_set)
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goto use_decoder_par;
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/* Both the demuxer and the decoder provide a PAR. If one of
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* the two PARs is 1:1 and the other one is not, use the one
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* that is not 1:1. If both are non-1:1, use the pixel aspect
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* ratio provided by the codec */
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if (demuxer_num == demuxer_denom && decoder_num != decoder_denom)
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goto use_decoder_par;
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if (decoder_num == decoder_denom && demuxer_num != demuxer_denom)
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goto use_demuxer_par;
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/* fall through and use decoder pixel aspect ratio */
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use_decoder_par:
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{
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GST_DEBUG ("Setting decoder provided pixel-aspect-ratio of %u:%u",
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decoder_num, decoder_denom);
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gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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decoder_num, decoder_denom, NULL);
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return;
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}
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use_demuxer_par:
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{
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GST_DEBUG ("Setting demuxer provided pixel-aspect-ratio of %u:%u",
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demuxer_num, demuxer_denom);
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gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION,
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demuxer_num, demuxer_denom, NULL);
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return;
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}
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}
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static gboolean
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gst_ffmpegdec_negotiate (GstFFMpegDec * ffmpegdec)
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{
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@ -641,7 +725,8 @@ gst_ffmpegdec_negotiate (GstFFMpegDec * ffmpegdec)
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ffmpegdec->format.video.fps_d == ffmpegdec->format.video.old_fps_d &&
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ffmpegdec->format.video.pix_fmt == ffmpegdec->context->pix_fmt)
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return TRUE;
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GST_DEBUG ("Renegotiating video from %dx%d@ %d/%d fps to %dx%d@ %d/%d fps",
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GST_DEBUG
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("Renegotiating video from %dx%d@ %d/%d fps to %dx%d@ %d/%d fps",
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ffmpegdec->format.video.width, ffmpegdec->format.video.height,
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ffmpegdec->format.video.old_fps_n, ffmpegdec->format.video.old_fps_n,
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ffmpegdec->context->width, ffmpegdec->context->height,
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@ -678,24 +763,8 @@ gst_ffmpegdec_negotiate (GstFFMpegDec * ffmpegdec)
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ffmpegdec->format.video.fps_d, NULL);
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}
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/* Add pixel-aspect-ratio if we have it. Prefer
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* ffmpeg PAR over sink PAR (since it's provided
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* by the codec, which is more often correct).
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*/
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if (ffmpegdec->context->sample_aspect_ratio.num &&
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ffmpegdec->context->sample_aspect_ratio.den) {
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GST_DEBUG ("setting ffmpeg provided pixel-aspect-ratio");
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gst_structure_set (gst_caps_get_structure (caps, 0),
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"pixel-aspect-ratio", GST_TYPE_FRACTION,
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ffmpegdec->context->sample_aspect_ratio.num,
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ffmpegdec->context->sample_aspect_ratio.den, NULL);
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} else if (ffmpegdec->par) {
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GST_DEBUG ("passing on pixel-aspect-ratio from sink");
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gst_structure_set (gst_caps_get_structure (caps, 0),
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"pixel-aspect-ratio", GST_TYPE_FRACTION,
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gst_value_get_fraction_numerator (ffmpegdec->par),
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gst_value_get_fraction_denominator (ffmpegdec->par), NULL);
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}
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gst_ffmpegdec_add_pixel_aspect_ratio (ffmpegdec,
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gst_caps_get_structure (caps, 0));
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}
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if (caps == NULL || !gst_pad_set_caps (ffmpegdec->srcpad, caps)) {
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