diff options
author | Anton Khirnov <anton@khirnov.net> | 2012-07-28 12:42:25 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2012-07-30 00:42:20 +0200 |
commit | 29d70274ecff6d39c96b3bcdd263102c4a4e6e06 (patch) | |
tree | 43a01880b27cfc0c7f4f351545b56a5325a155f0 /libavformat | |
parent | 193cdd9a3e8d7fc5669d32a611c862a000adce23 (diff) | |
download | ffmpeg-streaming-29d70274ecff6d39c96b3bcdd263102c4a4e6e06.zip ffmpeg-streaming-29d70274ecff6d39c96b3bcdd263102c4a4e6e06.tar.gz |
wv: K&R formatting cosmetics
Diffstat (limited to 'libavformat')
-rw-r--r-- | libavformat/wv.c | 175 |
1 files changed, 96 insertions, 79 deletions
diff --git a/libavformat/wv.c b/libavformat/wv.c index b311449..3fd1abc 100644 --- a/libavformat/wv.c +++ b/libavformat/wv.c @@ -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; } |