[FFmpeg-cvslog] bethsoftvid: synchronize video timestamps with audio sample rate
Justin Ruggles
git at videolan.org
Fri Feb 17 00:45:05 CET 2012
ffmpeg | branch: master | Justin Ruggles <justin.ruggles at gmail.com> | Wed Jan 18 20:24:30 2012 -0500| [c9fdf3241a96f01496facea9249b3965fa2df653] | committer: Justin Ruggles
bethsoftvid: synchronize video timestamps with audio sample rate
According to unofficial documentation, the video rate is locked to the audio
sample rate. This results in proper synchronization of audio and video
timestamps from the demuxer. This only works if the first audio packet occurs
before the first video packet or the audio sample rate is the default rate of
11111 Hz, both of which are true for all samples in our archive.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c9fdf3241a96f01496facea9249b3965fa2df653
---
libavformat/bethsoftvid.c | 47 +++++++++------
tests/ref/fate/bethsoft-vid | 141 ++++++++++++++++++++++---------------------
2 files changed, 100 insertions(+), 88 deletions(-)
diff --git a/libavformat/bethsoftvid.c b/libavformat/bethsoftvid.c
index 1092299..3e6ec5f 100644
--- a/libavformat/bethsoftvid.c
+++ b/libavformat/bethsoftvid.c
@@ -40,6 +40,8 @@ typedef struct BVID_DemuxContext
{
int nframes;
int sample_rate; /**< audio sample rate */
+ int width; /**< video width */
+ int height; /**< video height */
/** delay value between frames, added to individual frame delay.
* custom units, which will be added to other custom units (~=16ms according
* to free, unofficial documentation) */
@@ -65,7 +67,6 @@ static int vid_read_header(AVFormatContext *s)
{
BVID_DemuxContext *vid = s->priv_data;
AVIOContext *pb = s->pb;
- AVStream *stream;
/* load main header. Contents:
* bytes: 'V' 'I' 'D'
@@ -73,23 +74,15 @@ static int vid_read_header(AVFormatContext *s)
*/
avio_skip(pb, 5);
vid->nframes = avio_rl16(pb);
-
- stream = avformat_new_stream(s, NULL);
- if (!stream)
- return AVERROR(ENOMEM);
- vid->video_index = stream->index;
- stream->start_time = 0;
- avpriv_set_pts_info(stream, 32, 1, 60); // 16 ms increments, i.e. 60 fps
- stream->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- stream->codec->codec_id = CODEC_ID_BETHSOFTVID;
- stream->codec->width = avio_rl16(pb);
- stream->codec->height = avio_rl16(pb);
- stream->codec->pix_fmt = PIX_FMT_PAL8;
+ vid->width = avio_rl16(pb);
+ vid->height = avio_rl16(pb);
vid->bethsoft_global_delay = avio_rl16(pb);
avio_rl16(pb);
- // wait until the first audio packet to create the audio stream
+ // wait until the first packet to create each stream
+ vid->video_index = -1;
vid->audio_index = -1;
+ vid->sample_rate = DEFAULT_SAMPLE_RATE;
s->ctx_flags |= AVFMTCTX_NOHEADER;
return 0;
@@ -97,15 +90,34 @@ static int vid_read_header(AVFormatContext *s)
#define BUFFER_PADDING_SIZE 1000
static int read_frame(BVID_DemuxContext *vid, AVIOContext *pb, AVPacket *pkt,
- uint8_t block_type, AVFormatContext *s, int npixels)
+ uint8_t block_type, AVFormatContext *s)
{
uint8_t * vidbuf_start = NULL;
int vidbuf_nbytes = 0;
int code;
int bytes_copied = 0;
- int position, duration;
+ int position, duration, npixels;
unsigned int vidbuf_capacity;
int ret = 0;
+ AVStream *st;
+
+ if (vid->video_index < 0) {
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ vid->video_index = st->index;
+ if (vid->audio_index < 0) {
+ av_log_ask_for_sample(s, "No audio packet before first video "
+ "packet. Using default video time base.\n");
+ }
+ avpriv_set_pts_info(st, 64, 185, vid->sample_rate);
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = CODEC_ID_BETHSOFTVID;
+ st->codec->width = vid->width;
+ st->codec->height = vid->height;
+ }
+ st = s->streams[vid->video_index];
+ npixels = st->codec->width * st->codec->height;
vidbuf_start = av_malloc(vidbuf_capacity = BUFFER_PADDING_SIZE);
if(!vidbuf_start)
@@ -248,8 +260,7 @@ static int vid_read_packet(AVFormatContext *s,
case VIDEO_P_FRAME:
case VIDEO_YOFF_P_FRAME:
case VIDEO_I_FRAME:
- return read_frame(vid, pb, pkt, block_type, s,
- s->streams[0]->codec->width * s->streams[0]->codec->height);
+ return read_frame(vid, pb, pkt, block_type, s);
case EOF_BLOCK:
if(vid->nframes != 0)
diff --git a/tests/ref/fate/bethsoft-vid b/tests/ref/fate/bethsoft-vid
index e6b1451..394d7e9 100644
--- a/tests/ref/fate/bethsoft-vid
+++ b/tests/ref/fate/bethsoft-vid
@@ -1,143 +1,144 @@
-#tb 0: 1/60
+#tb 0: 12/553
#tb 1: 1/11111
0, 0, 0, 1, 192000, 0x00000000
1, 0, 0, 740, 1480, 0x00000000
+0, 3, 3, 1, 192000, 0x01a6cf45
1, 740, 740, 740, 1480, 0x20a92bd4
-0, 4, 4, 1, 192000, 0x01a6cf45
+0, 6, 6, 1, 192000, 0xd07d57e9
1, 1480, 1480, 925, 1850, 0xa9e48a74
-0, 8, 8, 1, 192000, 0xd07d57e9
1, 2405, 2405, 740, 1480, 0x23ecd018
-0, 13, 13, 1, 192000, 0x3cb1dff5
+0, 10, 10, 1, 192000, 0x3cb1dff5
+0, 13, 13, 1, 192000, 0xd1aaa8fb
1, 3145, 3145, 740, 1480, 0x206bb915
-0, 17, 17, 1, 192000, 0xd1aaa8fb
+0, 16, 16, 1, 192000, 0x75f526cd
1, 3885, 3885, 925, 1850, 0xb0e10e75
-0, 21, 21, 1, 192000, 0x75f526cd
1, 4810, 4810, 740, 1480, 0x8d9baedd
-0, 26, 26, 1, 192000, 0x0f673577
+0, 20, 20, 1, 192000, 0x0f673577
+0, 23, 23, 1, 192000, 0x897b6781
1, 5550, 5550, 740, 1480, 0xb802aae1
-0, 30, 30, 1, 192000, 0x897b6781
+0, 26, 26, 1, 192000, 0x81e6b7f7
1, 6290, 6290, 740, 1480, 0xecd7b5cc
-0, 34, 34, 1, 192000, 0x81e6b7f7
+0, 29, 29, 1, 192000, 0x1f45ce61
1, 7030, 7030, 925, 1850, 0x16861355
-0, 38, 38, 1, 192000, 0x1f45ce61
1, 7955, 7955, 740, 1480, 0xa51690bd
-0, 43, 43, 1, 192000, 0x5a0772a6
+0, 33, 33, 1, 192000, 0x5a0772a6
+0, 36, 36, 1, 192000, 0xf78732b3
1, 8695, 8695, 740, 1480, 0xdd0b90d1
-0, 47, 47, 1, 192000, 0xf78732b3
+0, 39, 39, 1, 192000, 0x8427f9e5
1, 9435, 9435, 925, 1850, 0x3ce6e333
-0, 51, 51, 1, 192000, 0x8427f9e5
1, 10360, 10360, 740, 1480, 0xf8ce8ea3
-0, 56, 56, 1, 192000, 0x40473f11
+0, 43, 43, 1, 192000, 0x40473f11
+0, 46, 46, 1, 192000, 0x173ceebe
1, 11100, 11100, 740, 1480, 0xda4597af
-0, 60, 60, 1, 192000, 0x173ceebe
+0, 49, 49, 1, 192000, 0x136b9516
1, 11840, 11840, 740, 1480, 0x918f7cb3
-0, 64, 64, 1, 192000, 0x136b9516
+0, 52, 52, 1, 192000, 0x138d11ae
1, 12580, 12580, 925, 1850, 0xca6edb15
-0, 68, 68, 1, 192000, 0x138d11ae
+0, 56, 56, 1, 192000, 0x063dbff3
1, 13505, 13505, 740, 1480, 0xba279597
-0, 73, 73, 1, 192000, 0x063dbff3
+0, 59, 59, 1, 192000, 0x5280852f
1, 14245, 14245, 740, 1480, 0xc5a38a9e
-0, 77, 77, 1, 192000, 0x5280852f
+0, 62, 62, 1, 192000, 0x99943a8f
1, 14985, 14985, 925, 1850, 0x8147eef5
-0, 81, 81, 1, 192000, 0x99943a8f
1, 15910, 15910, 740, 1480, 0xce2c7cb5
-0, 86, 86, 1, 192000, 0x0330a728
+0, 66, 66, 1, 192000, 0x0330a728
+0, 69, 69, 1, 192000, 0x5d35467d
1, 16650, 16650, 740, 1480, 0x4282819f
-0, 90, 90, 1, 192000, 0x5d35467d
+0, 72, 72, 1, 192000, 0xfd436343
1, 17390, 17390, 740, 1480, 0xbdbb8da6
-0, 94, 94, 1, 192000, 0xfd436343
+0, 75, 75, 1, 192000, 0xc323fcfe
1, 18130, 18130, 925, 1850, 0xdbbeea10
-0, 98, 98, 1, 192000, 0xc323fcfe
+0, 79, 79, 1, 192000, 0x2a1530a0
1, 19055, 19055, 740, 1480, 0xbe6a77c2
-0, 103, 103, 1, 192000, 0x2a1530a0
+0, 82, 82, 1, 192000, 0xbd43bb60
1, 19795, 19795, 740, 1480, 0xa85c75b2
-0, 107, 107, 1, 192000, 0xbd43bb60
+0, 85, 85, 1, 192000, 0xa47f5eab
1, 20535, 20535, 925, 1850, 0xa45bde21
-0, 111, 111, 1, 192000, 0xa47f5eab
+0, 89, 89, 1, 192000, 0xff17f5f7
1, 21460, 21460, 740, 1480, 0x84aa7895
-0, 116, 116, 1, 192000, 0xff17f5f7
+0, 92, 92, 1, 192000, 0xb4140b55
1, 22200, 22200, 740, 1480, 0x147f7d9f
-0, 120, 120, 1, 192000, 0xb4140b55
+0, 95, 95, 1, 192000, 0xb8782cc4
1, 22940, 22940, 740, 1480, 0xc8e77b85
-0, 124, 124, 1, 192000, 0xb8782cc4
+0, 98, 98, 1, 192000, 0x92975b8b
1, 23680, 23680, 925, 1850, 0x10d4d81b
-0, 128, 128, 1, 192000, 0x92975b8b
+0, 102, 102, 1, 192000, 0xf42a64d6
1, 24605, 24605, 740, 1480, 0xb4ae8bb1
-0, 133, 133, 1, 192000, 0xf42a64d6
+0, 105, 105, 1, 192000, 0x2cc7077d
1, 25345, 25345, 740, 1480, 0x3ef782a5
-0, 137, 137, 1, 192000, 0x2cc7077d
+0, 108, 108, 1, 192000, 0x00080cc8
1, 26085, 26085, 925, 1850, 0xdeebda14
-0, 141, 141, 1, 192000, 0x00080cc8
+0, 112, 112, 1, 192000, 0x584b48f3
1, 27010, 27010, 740, 1480, 0x4c7e7bbb
-0, 146, 146, 1, 192000, 0x584b48f3
+0, 115, 115, 1, 192000, 0xd68f57da
1, 27750, 27750, 740, 1480, 0x0e0e9198
-0, 150, 150, 1, 192000, 0xd68f57da
+0, 118, 118, 1, 192000, 0x60158422
1, 28490, 28490, 740, 1480, 0x5c1f819f
-0, 154, 154, 1, 192000, 0x60158422
+0, 121, 121, 1, 192000, 0xd7fb89e6
1, 29230, 29230, 925, 1850, 0x0e4cf6ff
-0, 158, 158, 1, 192000, 0xd7fb89e6
+0, 125, 125, 1, 192000, 0x97f1c76a
1, 30155, 30155, 740, 1480, 0x374388a7
-0, 163, 163, 1, 192000, 0x97f1c76a
+0, 128, 128, 1, 192000, 0x46c4bb9e
1, 30895, 30895, 740, 1480, 0xed729389
-0, 167, 167, 1, 192000, 0x46c4bb9e
+0, 131, 131, 1, 192000, 0xd32f9b66
1, 31635, 31635, 925, 1850, 0xe0f1e43f
-0, 171, 171, 1, 192000, 0xd32f9b66
+0, 135, 135, 1, 192000, 0x74f43886
1, 32560, 32560, 740, 1480, 0x3b27839a
-0, 176, 176, 1, 192000, 0x74f43886
+0, 138, 138, 1, 192000, 0x3c4e47df
1, 33300, 33300, 740, 1480, 0xe6287e94
-0, 180, 180, 1, 192000, 0x3c4e47df
+0, 141, 141, 1, 192000, 0xb5ac0a58
1, 34040, 34040, 740, 1480, 0x7e0d84b5
-0, 184, 184, 1, 192000, 0xb5ac0a58
+0, 144, 144, 1, 192000, 0xcc572b31
1, 34780, 34780, 925, 1850, 0xf08bebf7
-0, 188, 188, 1, 192000, 0xcc572b31
+0, 148, 148, 1, 192000, 0xb1739d26
1, 35705, 35705, 740, 1480, 0x94cf73a0
-0, 193, 193, 1, 192000, 0xb1739d26
+0, 151, 151, 1, 192000, 0x73da5473
1, 36445, 36445, 740, 1480, 0xfef384ae
-0, 197, 197, 1, 192000, 0x73da5473
+0, 154, 154, 1, 192000, 0x5f79f5bc
1, 37185, 37185, 925, 1850, 0x3b93e0f7
-0, 201, 201, 1, 192000, 0x5f79f5bc
+0, 158, 158, 1, 192000, 0x0affc0a0
1, 38110, 38110, 740, 1480, 0x28d27bae
-0, 206, 206, 1, 192000, 0x0affc0a0
+0, 161, 161, 1, 192000, 0x2b4d5c1c
1, 38850, 38850, 740, 1480, 0x94d57da5
-0, 210, 210, 1, 192000, 0x2b4d5c1c
+0, 164, 164, 1, 192000, 0x309b41bc
1, 39590, 39590, 740, 1480, 0xc9327db5
-0, 214, 214, 1, 192000, 0x309b41bc
+0, 167, 167, 1, 192000, 0xd42b6424
1, 40330, 40330, 925, 1850, 0xe781f604
-0, 218, 218, 1, 192000, 0xd42b6424
+0, 171, 171, 1, 192000, 0x4795c948
1, 41255, 41255, 740, 1480, 0x752f8c5b
-0, 223, 223, 1, 192000, 0x4795c948
+0, 174, 174, 1, 192000, 0xbc1a3a8b
1, 41995, 41995, 740, 1480, 0x30068032
-0, 227, 227, 1, 192000, 0xbc1a3a8b
+0, 177, 177, 1, 192000, 0x16529c5b
1, 42735, 42735, 925, 1850, 0x7895023e
-0, 231, 231, 1, 192000, 0x16529c5b
+0, 181, 181, 1, 192000, 0x6b1b31ba
1, 43660, 43660, 740, 1480, 0xa1e0a6e1
-0, 236, 236, 1, 192000, 0x6b1b31ba
+0, 184, 184, 1, 192000, 0x569182ce
1, 44400, 44400, 740, 1480, 0x6af4b500
-0, 240, 240, 1, 192000, 0x569182ce
+0, 187, 187, 1, 192000, 0xe6ea9866
1, 45140, 45140, 740, 1480, 0xc26ea4c7
-0, 244, 244, 1, 192000, 0xe6ea9866
+0, 190, 190, 1, 192000, 0x102c6076
1, 45880, 45880, 925, 1850, 0x16a72419
-0, 248, 248, 1, 192000, 0x102c6076
+0, 194, 194, 1, 192000, 0xb29f527a
1, 46805, 46805, 740, 1480, 0x1794aacc
-0, 253, 253, 1, 192000, 0xb29f527a
+0, 197, 197, 1, 192000, 0x040b4eee
1, 47545, 47545, 740, 1480, 0x2ecad8d0
-0, 257, 257, 1, 192000, 0x040b4eee
+0, 200, 200, 1, 192000, 0x92574f4a
1, 48285, 48285, 925, 1850, 0x2e645e07
-0, 261, 261, 1, 192000, 0x92574f4a
+0, 204, 204, 1, 192000, 0x1e8acdce
1, 49210, 49210, 740, 1480, 0x1c54dfe7
-0, 266, 266, 1, 192000, 0x1e8acdce
+0, 207, 207, 1, 192000, 0x1becf516
1, 49950, 49950, 740, 1480, 0xbd35feec
-0, 270, 270, 1, 192000, 0x1becf516
+0, 210, 210, 1, 192000, 0xb62e9776
1, 50690, 50690, 740, 1480, 0x419403d6
-0, 274, 274, 1, 192000, 0xb62e9776
+0, 213, 213, 1, 192000, 0xed37a08e
1, 51430, 51430, 925, 1850, 0x78699d2a
-0, 278, 278, 1, 192000, 0xed37a08e
+0, 217, 217, 1, 192000, 0xc0719912
1, 52355, 52355, 740, 1480, 0x74ec68e0
-0, 283, 283, 1, 192000, 0xc0719912
+0, 220, 220, 1, 192000, 0x24cf7a7e
1, 53095, 53095, 740, 1480, 0x76af64d9
-0, 287, 287, 1, 192000, 0x24cf7a7e
+0, 223, 223, 1, 192000, 0x0307f62f
1, 53835, 53835, 925, 1850, 0x5a303d1a
-0, 291, 291, 1, 192000, 0x0307f62f
+0, 227, 227, 1, 192000, 0x79b7417b
1, 54760, 54760, 537, 1074, 0x142ce7ba
-0, 296, 296, 1, 192000, 0x79b7417b
1, 55297, 55297, 925, 1850, 0x7ff682f7
+0, 230, 230, 1, 192000, 0x468d8db4
More information about the ffmpeg-cvslog
mailing list