RepoMirrors
/
mpv
mirror of https://github.com/mpv-player/mpv
1
0
Fork 0
Code Issues Releases Wiki Activity

demux_mkv: remove old code for -nocorrect-pts support 

There should be no reason for anyone to use demux_mkv in
-nocorrect-pts mode any more, so delete the code used for that.
This commit is contained in:
Uoti Urpala 2010-12-20 03:14:43 +02:00
parent 042ab4feb5
commit 1cf4802c1d
1 changed files with 0 additions and 131 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

131
libmpdemux/demux_mkv.c
View File

@ -139,14 +139,6 @@ typedef struct mkv_track {
int subtitle_type;
/* The timecodes of video frames might have to be reordered if they're
in display order (the timecodes, not the frames themselves!). In this
case demux packets have to be cached with the help of these variables. */
int reorder_timecodes;
demux_packet_t **cached_dps;
int num_cached_dps, num_allocated_dps;
double max_pts;
/* generic content encoding support */
mkv_content_encoding_t *encodings;
int num_encodings;
@ -282,32 +274,6 @@ static int aac_get_sample_rate_index(uint32_t sample_rate)
return i;
}
/** \brief Free cached demux packets
*
* Reordering the timecodes requires caching of demux packets. This function
* frees all these cached packets and the memory for the cached pointers
* itself.
*
* \param demuxer The demuxer for which the cache is to be freed.
*/
static void free_cached_dps(demuxer_t *demuxer)
{
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
mkv_track_t *track;
int i, k;
for (k = 0; k < mkv_d->num_tracks; k++) {
track = mkv_d->tracks[k];
for (i = 0; i < track->num_cached_dps; i++)
free_demux_packet(track->cached_dps[i]);
free(track->cached_dps);
track->cached_dps = NULL;
track->num_cached_dps = 0;
track->num_allocated_dps = 0;
track->max_pts = 0;
}
}
static void demux_mkv_decode(mkv_track_t *track, uint8_t *src,
uint8_t **dest, uint32_t *size, uint32_t type)
{
@ -1174,7 +1140,6 @@ static const videocodec_info_t vinfo[] = {
static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
int vid)
{
struct MPOpts *opts = demuxer->opts;
BITMAPINFOHEADER *bih;
void *ImageDesc = NULL;
sh_video_t *sh_v;
@ -1278,7 +1243,6 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
bih = realloc(bih, bih->biSize);
memcpy(bih + 1, track->private_data, track->private_size);
}
track->reorder_timecodes = opts->user_correct_pts == 0;
if (!vi->id) {
mp_tmsg(MSGT_DEMUX, MSGL_WARN, "[mkv] Unknown/unsupported "
"CodecID (%s) or missing/bad CodecPrivate\n"
@ -1800,7 +1764,6 @@ static void demux_close_mkv(demuxer_t *demuxer)
if (mkv_d) {
int i;
free_cached_dps(demuxer);
if (mkv_d->tracks) {
for (i = 0; i < mkv_d->num_tracks; i++)
demux_mkv_free_trackentry(mkv_d->tracks[i]);
@ -2057,96 +2020,6 @@ static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
}
}
/** Reorder timecodes and add cached demux packets to the queues.
*
* Timecode reordering is needed if a video track contains B frames that
* are timestamped in display order (e.g. MPEG-1, MPEG-2 or "native" MPEG-4).
* MPlayer doesn't like timestamps in display order. This function adjusts
* the timestamp of cached frames (which are exactly one I/P frame followed
* by one or more B frames) so that they are in coding order again.
*
* Example: The track with 25 FPS contains four frames with the timecodes
* I at 0ms, P at 120ms, B at 40ms and B at 80ms. As soon as the next I
* or P frame arrives these timecodes can be changed to I at 0ms, P at 40ms,
* B at 80ms and B at 120ms.
*
* This works for simple H.264 B-frame pyramids, but not for arbitrary orders.
*
* \param demuxer The Matroska demuxer struct for this instance.
* \param track The track structure whose cache should be handled.
*/
static void flush_cached_dps(demuxer_t *demuxer, mkv_track_t *track)
{
int i, ok;
if (track->num_cached_dps == 0)
return;
do {
ok = 1;
for (i = 1; i < track->num_cached_dps; i++)
if (track->cached_dps[i - 1]->pts > track->cached_dps[i]->pts) {
double tmp_pts = track->cached_dps[i - 1]->pts;
track->cached_dps[i - 1]->pts = track->cached_dps[i]->pts;
track->cached_dps[i]->pts = tmp_pts;
ok = 0;
}
} while (!ok);
for (i = 0; i < track->num_cached_dps; i++)
ds_add_packet(demuxer->video, track->cached_dps[i]);
track->num_cached_dps = 0;
}
/** Cache video frames if timecodes have to be reordered.
*
* Timecode reordering is needed if a video track contains B frames that
* are timestamped in display order (e.g. MPEG-1, MPEG-2 or "native" MPEG-4).
* This function takes in a Matroska block read from the file, allocates a
* demux packet for it, fills in its values, allocates space for storing
* pointers to the cached demux packets and adds the packet to it. If
* the packet contains an I or a P frame then ::flush_cached_dps is called
* in order to send the old cached frames downstream.
*
* \param demuxer The Matroska demuxer struct for this instance.
* \param track The packet is meant for this track.
* \param buffer The actual frame contents.
* \param size The frame size in bytes.
* \param block_bref A relative timecode (backward reference). If it is \c 0
* then the frame is an I frame.
* \param block_fref A relative timecode (forward reference). If it is \c 0
* then the frame is either an I frame or a P frame depending on the value
* of \a block_bref. Otherwise it's a B frame.
*/
static void handle_video_bframes(demuxer_t *demuxer, mkv_track_t *track,
uint8_t *buffer, uint32_t size,
int block_bref, int block_fref)
{
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
demux_packet_t *dp;
dp = new_demux_packet(size);
memcpy(dp->buffer, buffer, size);
dp->pos = demuxer->filepos;
dp->pts = mkv_d->last_pts;
if ((track->num_cached_dps > 0) && (dp->pts < track->max_pts))
block_fref = 1;
if (block_fref == 0) /* I or P frame */
flush_cached_dps(demuxer, track);
if (block_bref != 0) /* I frame, don't cache it */
dp->flags = 0x10;
if ((track->num_cached_dps + 1) > track->num_allocated_dps) {
track->cached_dps = (demux_packet_t **)
realloc(track->cached_dps,
(track->num_cached_dps + 10) * sizeof(demux_packet_t *));
track->num_allocated_dps += 10;
}
track->cached_dps[track->num_cached_dps] = dp;
track->num_cached_dps++;
if (dp->pts > track->max_pts)
track->max_pts = dp->pts;
}
static int handle_block(demuxer_t *demuxer, uint8_t *block, uint64_t length,
uint64_t block_duration, int64_t block_bref,
int64_t block_fref, uint8_t simpleblock)
@ -2254,9 +2127,6 @@ static int handle_block(demuxer_t *demuxer, uint8_t *block, uint64_t length,
else if (ds == demuxer->audio && track->realmedia)
handle_realaudio(demuxer, track, block, lace_size[i],
block_bref);
else if (ds == demuxer->video && track->reorder_timecodes)
handle_video_bframes(demuxer, track, block, lace_size[i],
block_bref, block_fref);
else {
int size = lace_size[i];
demux_packet_t *dp;
@ -2567,7 +2437,6 @@ static void demux_mkv_seek(demuxer_t *demuxer, float rel_seek_secs,
// specifies a keyframe with high, but not perfect, precision.
rel_seek_secs += flags & SEEK_FORWARD ? -0.005 : 0.005;
free_cached_dps(demuxer);
if (!(flags & SEEK_FACTOR)) { /* time in secs */
mkv_index_t *index = NULL;