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wv: K&R formatting cosmetics

tags/n1.0
Anton Khirnov Diego Biurrun 13 years ago
parent
193cdd9a3e
commit
29d70274ec
1 changed files with 96 additions and 79 deletions
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  1. +96
    -79
      libavformat/wv.c

+ 96
- 79
libavformat/wv.c View File

@@ -36,7 +36,7 @@
#define WV_END_BLOCK 0x1000
#define WV_SINGLE_BLOCK (WV_START_BLOCK | WV_END_BLOCK)

enum WV_FLAGS{
enum WV_FLAGS {
WV_MONO = 0x0004,
WV_HYBRID = 0x0008,
WV_JOINT = 0x0010,
@@ -51,11 +51,11 @@ enum WV_FLAGS{
};

static const int wv_rates[16] = {
6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000,
32000, 44100, 48000, 64000, 88200, 96000, 192000, -1
6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000,
32000, 44100, 48000, 64000, 88200, 96000, 192000, -1
};

typedef struct{
typedef struct {
uint32_t blksize, flags;
int rate, chan, bpp;
uint32_t chmask;
@@ -64,7 +64,7 @@ typedef struct{
int block_parsed;
uint8_t extra[WV_EXTRA_SIZE];
int64_t pos;
}WVContext;
} WVContext;

static int wv_probe(AVProbeData *p)
{
@@ -78,7 +78,8 @@ 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,
int append)
{
WVContext *wc = ctx->priv_data;
uint32_t tag, ver;
@@ -87,64 +88,67 @@ static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb, int appen
uint32_t chmask;

wc->pos = avio_tell(pb);
if(!append){
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){
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){
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
wc->soff = avio_rl32(pb); // offset in samples of current block
avio_read(pb, wc->extra, WV_EXTRA_SIZE);
}else{
} else {
size = wc->blksize;
}
wc->flags = AV_RL32(wc->extra + 4);
// blocks with zero samples don't contain actual audio information and should be ignored
/* Blocks with zero samples don't contain actual audio information
* and should be ignored */
if (!AV_RN32(wc->extra))
return 0;
//parse flags
bpp = ((wc->flags & 3) + 1) << 3;
chan = 1 + !(wc->flags & WV_MONO);
// parse flags
bpp = ((wc->flags & 3) + 1) << 3;
chan = 1 + !(wc->flags & WV_MONO);
chmask = wc->flags & WV_MONO ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
rate = wv_rates[(wc->flags >> 23) & 0xF];
rate = wv_rates[(wc->flags >> 23) & 0xF];
wc->multichannel = !!((wc->flags & WV_SINGLE_BLOCK) != WV_SINGLE_BLOCK);
if(wc->multichannel){
chan = wc->chan;
if (wc->multichannel) {
chan = wc->chan;
chmask = wc->chmask;
}
if((rate == -1 || !chan) && !wc->block_parsed){
if ((rate == -1 || !chan) && !wc->block_parsed) {
int64_t block_end = avio_tell(pb) + wc->blksize - 24;
if(!pb->seekable){
av_log(ctx, AV_LOG_ERROR, "Cannot determine additional parameters\n");
if (!pb->seekable) {
av_log(ctx, AV_LOG_ERROR,
"Cannot determine additional parameters\n");
return AVERROR_INVALIDDATA;
}
while(avio_tell(pb) < block_end){
while (avio_tell(pb) < block_end) {
int id, size;
id = avio_r8(pb);
id = avio_r8(pb);
size = (id & 0x80) ? avio_rl24(pb) : avio_r8(pb);
size <<= 1;
if(id&0x40)
if (id & 0x40)
size--;
switch(id&0x3F){
switch (id & 0x3F) {
case 0xD:
if(size <= 1){
av_log(ctx, AV_LOG_ERROR, "Insufficient channel information\n");
if (size <= 1) {
av_log(ctx, AV_LOG_ERROR,
"Insufficient channel information\n");
return AVERROR_INVALIDDATA;
}
chan = avio_r8(pb);
switch(size - 2){
switch (size - 2) {
case 0:
chmask = avio_r8(pb);
break;
@@ -159,11 +163,12 @@ static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb, int appen
break;
case 5:
avio_skip(pb, 1);
chan |= (avio_r8(pb) & 0xF) << 8;
chan |= (avio_r8(pb) & 0xF) << 8;
chmask = avio_rl24(pb);
break;
default:
av_log(ctx, AV_LOG_ERROR, "Invalid channel info size %d\n", size);
av_log(ctx, AV_LOG_ERROR,
"Invalid channel info size %d\n", size);
return AVERROR_INVALIDDATA;
}
break;
@@ -173,30 +178,41 @@ static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb, int appen
default:
avio_skip(pb, size);
}
if(id&0x40)
if (id & 0x40)
avio_skip(pb, 1);
}
if(rate == -1){
av_log(ctx, AV_LOG_ERROR, "Cannot determine custom sampling rate\n");
if (rate == -1) {
av_log(ctx, AV_LOG_ERROR,
"Cannot determine custom sampling rate\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, block_end - wc->blksize + 24, SEEK_SET);
}
if(!wc->bpp) wc->bpp = bpp;
if(!wc->chan) wc->chan = chan;
if(!wc->chmask) wc->chmask = chmask;
if(!wc->rate) wc->rate = rate;
if (!wc->bpp)
wc->bpp = bpp;
if (!wc->chan)
wc->chan = chan;
if (!wc->chmask)
wc->chmask = chmask;
if (!wc->rate)
wc->rate = rate;

if(wc->flags && bpp != wc->bpp){
av_log(ctx, AV_LOG_ERROR, "Bits per sample differ, this block: %i, header block: %i\n", bpp, wc->bpp);
if (wc->flags && bpp != wc->bpp) {
av_log(ctx, AV_LOG_ERROR,
"Bits per sample differ, this block: %i, header block: %i\n",
bpp, wc->bpp);
return AVERROR_INVALIDDATA;
}
if(wc->flags && !wc->multichannel && chan != wc->chan){
av_log(ctx, AV_LOG_ERROR, "Channels differ, this block: %i, header block: %i\n", chan, wc->chan);
if (wc->flags && !wc->multichannel && chan != wc->chan) {
av_log(ctx, AV_LOG_ERROR,
"Channels differ, this block: %i, header block: %i\n",
chan, wc->chan);
return AVERROR_INVALIDDATA;
}
if(wc->flags && rate != -1 && rate != wc->rate){
av_log(ctx, AV_LOG_ERROR, "Sampling rate differ, this block: %i, header block: %i\n", rate, wc->rate);
if (wc->flags && rate != -1 && rate != wc->rate) {
av_log(ctx, AV_LOG_ERROR,
"Sampling rate differ, this block: %i, header block: %i\n",
rate, wc->rate);
return AVERROR_INVALIDDATA;
}
wc->blksize = size - 24;
@@ -211,10 +227,10 @@ static int wv_read_header(AVFormatContext *s)
int ret;

wc->block_parsed = 0;
for(;;){
for (;;) {
if ((ret = wv_read_block_header(s, pb, 0)) < 0)
return ret;
if(!AV_RN32(wc->extra))
if (!AV_RN32(wc->extra))
avio_skip(pb, wc->blksize - 24);
else
break;
@@ -224,20 +240,20 @@ static int wv_read_header(AVFormatContext *s)
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_WAVPACK;
st->codec->channels = wc->chan;
st->codec->channel_layout = wc->chmask;
st->codec->sample_rate = wc->rate;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_WAVPACK;
st->codec->channels = wc->chan;
st->codec->channel_layout = wc->chmask;
st->codec->sample_rate = wc->rate;
st->codec->bits_per_coded_sample = wc->bpp;
avpriv_set_pts_info(st, 64, 1, wc->rate);
st->start_time = 0;
st->duration = wc->samples;
st->duration = wc->samples;

if(s->pb->seekable) {
if (s->pb->seekable) {
int64_t cur = avio_tell(s->pb);
ff_ape_parse_tag(s);
if(!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
if (!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
ff_id3v1_read(s);
avio_seek(s->pb, cur, SEEK_SET);
}
@@ -245,8 +261,7 @@ static int wv_read_header(AVFormatContext *s)
return 0;
}

static int wv_read_packet(AVFormatContext *s,
AVPacket *pkt)
static int wv_read_packet(AVFormatContext *s, AVPacket *pkt)
{
WVContext *wc = s->priv_data;
int ret;
@@ -256,41 +271,41 @@ static int wv_read_packet(AVFormatContext *s,

if (s->pb->eof_reached)
return AVERROR_EOF;
if(wc->block_parsed){
if (wc->block_parsed) {
if ((ret = wv_read_block_header(s, s->pb, 0)) < 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_EXTRA_SIZE + off) < 0)
return AVERROR(ENOMEM);
if(wc->multichannel)
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);
if(ret != 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')){
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 = av_append_packet(s->pb, pkt, 4)) < 0) {
av_free_packet(pkt);
return ret;
}
size = AV_RL32(pkt->data + pkt->size - 4);
if(size < 24 || size > WV_BLOCK_LIMIT){
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){
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;
@@ -298,29 +313,30 @@ static int wv_read_packet(AVFormatContext *s,
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){
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){
if ((ret = wv_read_block_header(s, s->pb, 1)) < 0) {
av_free_packet(pkt);
return ret;
}
ret = av_append_packet(s->pb, pkt, wc->blksize);
if(ret < 0){
if (ret < 0) {
av_free_packet(pkt);
return ret;
}
}
pkt->stream_index = 0;
wc->block_parsed = 1;
pkt->pts = wc->soff;
block_samples = AV_RN32(wc->extra);
wc->block_parsed = 1;
pkt->pts = wc->soff;
block_samples = AV_RN32(wc->extra);
if (block_samples > INT32_MAX)
av_log(s, AV_LOG_WARNING, "Too many samples in block: %"PRIu32"\n", block_samples);
av_log(s, AV_LOG_WARNING,
"Too many samples in block: %"PRIu32"\n", block_samples);
else
pkt->duration = block_samples;

@@ -328,9 +344,10 @@ static int wv_read_packet(AVFormatContext *s,
return 0;
}

static int wv_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
static int wv_read_seek(AVFormatContext *s, int stream_index,
int64_t timestamp, int flags)
{
AVStream *st = s->streams[stream_index];
AVStream *st = s->streams[stream_index];
WVContext *wc = s->priv_data;
AVPacket pkt1, *pkt = &pkt1;
int ret;
@@ -345,19 +362,19 @@ static int wv_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp,
return 0;
}
/* if timestamp is out of bounds, return error */
if(timestamp < 0 || timestamp >= s->duration)
if (timestamp < 0 || timestamp >= s->duration)
return AVERROR(EINVAL);

pos = avio_tell(s->pb);
do{
do {
ret = av_read_frame(s, pkt);
if (ret < 0){
if (ret < 0) {
avio_seek(s->pb, pos, SEEK_SET);
return ret;
}
pts = pkt->pts;
av_free_packet(pkt);
}while(pts < timestamp);
} while(pts < timestamp);
return 0;
}



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