diff options
Diffstat (limited to 'gst/videoparsers/gstmpegvideoparse.c')
| -rw-r--r-- | gst/videoparsers/gstmpegvideoparse.c | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/gst/videoparsers/gstmpegvideoparse.c b/gst/videoparsers/gstmpegvideoparse.c index 5db0080a1..66a8929f7 100644 --- a/gst/videoparsers/gstmpegvideoparse.c +++ b/gst/videoparsers/gstmpegvideoparse.c @@ -183,6 +183,7 @@ gst_mpegv_parse_reset_frame (GstMpegvParse * mpvparse) mpvparse->last_sc = -1; mpvparse->seq_offset = G_MAXUINT; mpvparse->pic_offset = -1; + mpvparse->frame_repeat_count = 0; } static void @@ -238,8 +239,13 @@ gst_mpegv_parse_process_config (GstMpegvParse * mpvparse, GstBuffer * buf, memcmp (GST_BUFFER_DATA (mpvparse->config), data, size) == 0) return TRUE; - if (!gst_mpeg_video_parse_sequence_header (&mpvparse->sequencehdr, data, + if (gst_mpeg_video_parse_sequence_header (&mpvparse->sequencehdr, data, GST_BUFFER_SIZE (buf) - mpvparse->seq_offset, 0)) { + if (mpvparse->fps_num == 0 || mpvparse->fps_den == 0) { + mpvparse->fps_num = mpvparse->sequencehdr.fps_n; + mpvparse->fps_den = mpvparse->sequencehdr.fps_d; + } + } else { GST_DEBUG_OBJECT (mpvparse, "failed to parse config data (size %d) at offset %d", size, mpvparse->seq_offset); @@ -258,8 +264,17 @@ gst_mpegv_parse_process_config (GstMpegvParse * mpvparse, GstBuffer * buf, if (tpoffsz->type == GST_MPEG_VIDEO_PACKET_EXTENSION) { mpvparse->mpeg_version = 2; - gst_mpeg_video_parse_sequence_extension (&mpvparse->sequenceext, - GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), tpoffsz->offset); + + if (gst_mpeg_video_parse_sequence_extension (&mpvparse->sequenceext, + GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), + tpoffsz->offset)) { + mpvparse->fps_num = + mpvparse->sequencehdr.fps_n * (mpvparse->sequenceext.fps_n_ext + + 1) * 2; + mpvparse->fps_den = + mpvparse->sequencehdr.fps_d * (mpvparse->sequenceext.fps_d_ext + + 1); + } } } } @@ -335,6 +350,27 @@ picture_type_name (guint8 pct) } #endif /* GST_DISABLE_GST_DEBUG */ +static void +parse_picture_extension (GstMpegvParse * mpvparse, GstBuffer * buf, guint off) +{ + GstMpegVideoPictureExt ext; + if (gst_mpeg_video_parse_picture_extension (&ext, GST_BUFFER_DATA (buf), + GST_BUFFER_SIZE (buf), off)) { + mpvparse->frame_repeat_count = 1; + + if (ext.repeat_first_field) { + if (mpvparse->sequenceext.progressive) { + if (ext.top_field_first) + mpvparse->frame_repeat_count = 5; + else + mpvparse->frame_repeat_count = 3; + } else if (ext.progressive_frame) { + mpvparse->frame_repeat_count = 2; + } + } + } +} + /* caller guarantees at least start code in @buf at @off */ /* for off == 0 initial code; returns TRUE if code starts a frame, * otherwise returns TRUE if code terminates preceding frame */ @@ -374,6 +410,10 @@ gst_mpegv_parse_process_sc (GstMpegvParse * mpvparse, else ret = TRUE; break; + case GST_MPEG_VIDEO_PACKET_EXTENSION: + GST_LOG_OBJECT (mpvparse, "startcode is VIDEO PACKET EXTENSION"); + parse_picture_extension (mpvparse, buf, off); + packet = FALSE; default: packet = FALSE; break; @@ -551,9 +591,9 @@ gst_mpegv_parse_update_src_caps (GstMpegvParse * mpvparse) } /* perhaps we have a framerate */ - if (mpvparse->sequencehdr.fps_n > 0 && mpvparse->sequencehdr.fps_d > 0) { - gint fps_num = mpvparse->sequencehdr.fps_n; - gint fps_den = mpvparse->sequencehdr.fps_d; + if (mpvparse->fps_num > 0 && mpvparse->fps_den > 0) { + gint fps_num = mpvparse->fps_num; + gint fps_den = mpvparse->fps_den; GstClockTime latency = gst_util_uint64_scale (GST_SECOND, fps_den, fps_num); gst_caps_set_simple (caps, "framerate", @@ -658,6 +698,9 @@ gst_mpegv_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame) GST_BUFFER_DURATION (buffer) = 0; } + GST_BUFFER_DURATION (buffer) = + (1 + mpvparse->frame_repeat_count) * GST_BUFFER_DURATION (buffer); + if (G_UNLIKELY (mpvparse->drop && !mpvparse->config)) { GST_DEBUG_OBJECT (mpvparse, "dropping frame as no config yet"); return GST_BASE_PARSE_FLOW_DROPPED; |