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ffmpeg
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Merge commit '5074f4545c439420daebe4c2f28ed216440b6ec7' 

* commit '5074f4545c439420daebe4c2f28ed216440b6ec7':
  wavpack demuxer: export full wavpack blocks.

Conflicts:
	libavformat/wv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-05-28 11:49:30 +02:00
parent aa6cf4c1b0 5074f4545c
commit 8012f93ed8
2 changed files with 56 additions and 91 deletions
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33
libavcodec/wavpack.c
View File

@ -33,6 +33,8 @@
* WavPack lossless audio decoder
*/
#define WV_HEADER_SIZE 32
#define WV_MONO 0x00000004
#define WV_JOINT_STEREO 0x00000010
#define WV_FALSE_STEREO 0x40000000
@ -1156,7 +1158,7 @@ static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
AVFrame *frame = data;
int frame_size, ret, frame_flags;
if (avpkt->size < 12 + s->multichannel * 4)
if (avpkt->size <= WV_HEADER_SIZE)
return AVERROR_INVALIDDATA;
s->block = 0;
@ -1168,13 +1170,8 @@ static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
buf += 4;
frame_flags = AV_RL32(buf);
} else {
if (s->multichannel) {
s->samples = AV_RL32(buf + 4);
frame_flags = AV_RL32(buf + 8);
} else {
s->samples = AV_RL32(buf);
frame_flags = AV_RL32(buf + 4);
}
s->samples = AV_RL32(buf + 20);
frame_flags = AV_RL32(buf + 24);
}
if (s->samples <= 0 || s->samples > WV_MAX_SAMPLES) {
av_log(avctx, AV_LOG_ERROR, "Invalid number of samples: %d\n",
@ -1198,18 +1195,16 @@ static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
frame->nb_samples = s->samples;
while (buf_size > 0) {
if (!s->multichannel) {
frame_size = buf_size;
if (!s->mkv_mode) {
if (buf_size <= WV_HEADER_SIZE)
break;
frame_size = AV_RL32(buf + 4) - 12;
buf += 20;
buf_size -= 20;
} else {
if (!s->mkv_mode) {
frame_size = AV_RL32(buf) - 12;
buf += 4;
buf_size -= 4;
} else {
if (buf_size < 12) // MKV files can have zero flags after last block
break;
frame_size = AV_RL32(buf + 8) + 12;
}
if (buf_size < 12) // MKV files can have zero flags after last block
break;
frame_size = AV_RL32(buf + 8) + 12;
}
if (frame_size <= 0 || frame_size > buf_size) {
av_log(avctx, AV_LOG_ERROR,

114
libavformat/wv.c
View File

@ -30,7 +30,7 @@
// specs say that maximum block size is 1Mb
#define WV_BLOCK_LIMIT 1047576
#define WV_EXTRA_SIZE 12
#define WV_HEADER_SIZE 32
#define WV_START_BLOCK 0x0800
#define WV_END_BLOCK 0x1000
@ -56,13 +56,13 @@ static const int wv_rates[16] = {
};
typedef struct {
uint8_t block_header[WV_HEADER_SIZE];
uint32_t blksize, flags;
int rate, chan, bpp;
uint32_t chmask;
uint32_t samples, soff;
int multichannel;
int block_parsed;
uint8_t extra[WV_EXTRA_SIZE];
int64_t pos;
int64_t apetag_start;
@ -83,12 +83,11 @@ static int wv_probe(AVProbeData *p)
return 0;
}
static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb,
int append)
static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb)
{
WVContext *wc = ctx->priv_data;
uint32_t tag, ver;
int size;
uint32_t ver;
int size, ret;
int rate, bpp, chan;
uint32_t chmask;
@ -98,33 +97,30 @@ static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb,
if (wc->apetag_start && wc->pos >= wc->apetag_start)
return AVERROR_EOF;
if (!append) {
tag = avio_rl32(pb);
if (tag != MKTAG('w', 'v', 'p', 'k'))
return AVERROR_INVALIDDATA;
size = avio_rl32(pb);
if (size < 24 || size > WV_BLOCK_LIMIT) {
av_log(ctx, AV_LOG_ERROR, "Incorrect block size %i\n", size);
return AVERROR_INVALIDDATA;
}
wc->blksize = size;
ver = avio_rl16(pb);
if (ver < 0x402 || ver > 0x410) {
av_log(ctx, AV_LOG_ERROR, "Unsupported version %03X\n", ver);
return AVERROR_PATCHWELCOME;
}
avio_r8(pb); // track no
avio_r8(pb); // track sub index
wc->samples = avio_rl32(pb); // total samples in file
wc->soff = avio_rl32(pb); // offset in samples of current block
avio_read(pb, wc->extra, WV_EXTRA_SIZE);
} else {
size = wc->blksize;
ret = avio_read(pb, wc->block_header, WV_HEADER_SIZE);
if (ret != WV_HEADER_SIZE)
return (ret < 0) ? ret : AVERROR_EOF;
if (AV_RL32(wc->block_header) != MKTAG('w', 'v', 'p', 'k'))
return AVERROR_INVALIDDATA;
size = AV_RL32(wc->block_header + 4);
if (size < 24 || size > WV_BLOCK_LIMIT) {
av_log(ctx, AV_LOG_ERROR, "Incorrect block size %i\n", size);
return AVERROR_INVALIDDATA;
}
wc->flags = AV_RL32(wc->extra + 4);
wc->blksize = size;
ver = AV_RL32(wc->block_header + 8);
if (ver < 0x402 || ver > 0x410) {
av_log(ctx, AV_LOG_ERROR, "Unsupported version %03X\n", ver);
return AVERROR_PATCHWELCOME;
}
wc->samples = AV_RL32(wc->block_header + 12); // total samples in file
wc->soff = AV_RL32(wc->block_header + 16); // offset in samples of current block
wc->flags = AV_RL32(wc->block_header + 24);
/* Blocks with zero samples don't contain actual audio information
* and should be ignored */
if (!AV_RN32(wc->extra))
if (!AV_RN32(wc->block_header + 20))
return 0;
// parse flags
bpp = ((wc->flags & 3) + 1) << 3;
@ -238,9 +234,9 @@ static int wv_read_header(AVFormatContext *s)
wc->block_parsed = 0;
for (;;) {
if ((ret = wv_read_block_header(s, pb, 0)) < 0)
if ((ret = wv_read_block_header(s, pb)) < 0)
return ret;
if (!AV_RN32(wc->extra))
if (!AV_RL32(wc->block_header + 20))
avio_skip(pb, wc->blksize - 24);
else
break;
@ -276,75 +272,49 @@ static int wv_read_packet(AVFormatContext *s, AVPacket *pkt)
{
WVContext *wc = s->priv_data;
int ret;
int size, ver, off;
int off;
int64_t pos;
uint32_t block_samples;
if (url_feof(s->pb))
return AVERROR_EOF;
if (wc->block_parsed) {
if ((ret = wv_read_block_header(s, s->pb, 0)) < 0)
if ((ret = wv_read_block_header(s, s->pb)) < 0)
return ret;
}
pos = wc->pos;
off = wc->multichannel ? 4 : 0;
if (av_new_packet(pkt, wc->blksize + WV_EXTRA_SIZE + off) < 0)
if (av_new_packet(pkt, wc->blksize + WV_HEADER_SIZE) < 0)
return AVERROR(ENOMEM);
if (wc->multichannel)
AV_WL32(pkt->data, wc->blksize + WV_EXTRA_SIZE + 12);
memcpy(pkt->data + off, wc->extra, WV_EXTRA_SIZE);
ret = avio_read(s->pb, pkt->data + WV_EXTRA_SIZE + off, wc->blksize);
memcpy(pkt->data, wc->block_header, WV_HEADER_SIZE);
ret = avio_read(s->pb, pkt->data + WV_HEADER_SIZE, wc->blksize);
if (ret != wc->blksize) {
av_free_packet(pkt);
return AVERROR(EIO);
}
while (!(wc->flags & WV_END_BLOCK)) {
if (avio_rl32(s->pb) != MKTAG('w', 'v', 'p', 'k')) {
av_free_packet(pkt);
return AVERROR_INVALIDDATA;
}
if ((ret = av_append_packet(s->pb, pkt, 4)) < 0) {
if ((ret = wv_read_block_header(s, s->pb)) < 0) {
av_free_packet(pkt);
return ret;
}
size = AV_RL32(pkt->data + pkt->size - 4);
if (size < 24 || size > WV_BLOCK_LIMIT) {
av_free_packet(pkt);
av_log(s, AV_LOG_ERROR, "Incorrect block size %d\n", size);
return AVERROR_INVALIDDATA;
}
wc->blksize = size;
ver = avio_rl16(s->pb);
if (ver < 0x402 || ver > 0x410) {
av_free_packet(pkt);
av_log(s, AV_LOG_ERROR, "Unsupported version %03X\n", ver);
return AVERROR_PATCHWELCOME;
}
avio_r8(s->pb); // track no
avio_r8(s->pb); // track sub index
wc->samples = avio_rl32(s->pb); // total samples in file
wc->soff = avio_rl32(s->pb); // offset in samples of current block
if ((ret = av_append_packet(s->pb, pkt, WV_EXTRA_SIZE)) < 0) {
av_free_packet(pkt);
return ret;
}
memcpy(wc->extra, pkt->data + pkt->size - WV_EXTRA_SIZE, WV_EXTRA_SIZE);
if ((ret = wv_read_block_header(s, s->pb, 1)) < 0) {
off = pkt->size;
if ((ret = av_grow_packet(pkt, WV_HEADER_SIZE + wc->blksize)) < 0) {
av_free_packet(pkt);
return ret;
}
ret = av_append_packet(s->pb, pkt, wc->blksize);
if (ret < 0) {
memcpy(pkt->data + off, wc->block_header, WV_HEADER_SIZE);
ret = avio_read(s->pb, pkt->data + off + WV_HEADER_SIZE, wc->blksize);
if (ret != wc->blksize) {
av_free_packet(pkt);
return ret;
return (ret < 0) ? ret : AVERROR_EOF;
}
}
pkt->stream_index = 0;
wc->block_parsed = 1;
pkt->pts = wc->soff;
block_samples = AV_RL32(wc->extra);
block_samples = AV_RL32(wc->block_header + 20);
if (block_samples > INT32_MAX)
av_log(s, AV_LOG_WARNING,
"Too many samples in block: %"PRIu32"\n", block_samples);