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4xm: K&R formatting cosmetics

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This commit is contained in:
Luca Barbato 2013-06-05 17:32:49 +02:00
parent 08859d19b4
commit e6496ea7e7
1 changed files with 41 additions and 44 deletions
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85
libavformat/4xm.c
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@ -57,7 +57,7 @@
#define GET_LIST_HEADER() \ #define GET_LIST_HEADER() \
fourcc_tag = avio_rl32(pb); \ fourcc_tag = avio_rl32(pb); \
size = avio_rl32(pb); \ size = avio_rl32(pb); \
if (fourcc_tag != LIST_TAG) \ if (fourcc_tag != LIST_TAG) \
return AVERROR_INVALIDDATA; \ return AVERROR_INVALIDDATA; \
fourcc_tag = avio_rl32(pb); fourcc_tag = avio_rl32(pb);
@ -103,8 +103,8 @@ static int fourxm_read_header(AVFormatContext *s)
AVStream *st; AVStream *st;
fourxm->track_count = 0; fourxm->track_count = 0;
fourxm->tracks = NULL; fourxm->tracks = NULL;
fourxm->fps = 1.0; fourxm->fps = 1.0;
/* skip the first 3 32-bit numbers */ /* skip the first 3 32-bit numbers */
avio_skip(pb, 12); avio_skip(pb, 12);
@ -119,7 +119,7 @@ static int fourxm_read_header(AVFormatContext *s)
header = av_malloc(header_size); header = av_malloc(header_size);
if (!header) if (!header)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
if (avio_read(pb, header, header_size) != header_size){ if (avio_read(pb, header, header_size) != header_size) {
av_free(header); av_free(header);
return AVERROR(EIO); return AVERROR(EIO);
} }
@ -127,14 +127,14 @@ static int fourxm_read_header(AVFormatContext *s)
/* take the lazy approach and search for any and all vtrk and strk chunks */ /* take the lazy approach and search for any and all vtrk and strk chunks */
for (i = 0; i < header_size - 8; i++) { for (i = 0; i < header_size - 8; i++) {
fourcc_tag = AV_RL32(&header[i]); fourcc_tag = AV_RL32(&header[i]);
size = AV_RL32(&header[i + 4]); size = AV_RL32(&header[i + 4]);
if (fourcc_tag == std__TAG) { if (fourcc_tag == std__TAG) {
fourxm->fps = av_int2float(AV_RL32(&header[i + 12])); fourxm->fps = av_int2float(AV_RL32(&header[i + 12]));
} else if (fourcc_tag == vtrk_TAG) { } else if (fourcc_tag == vtrk_TAG) {
/* check that there is enough data */ /* check that there is enough data */
if (size != vtrk_SIZE) { if (size != vtrk_SIZE) {
ret= AVERROR_INVALIDDATA; ret = AVERROR_INVALIDDATA;
goto fail; goto fail;
} }
fourxm->width = AV_RL32(&header[i + 36]); fourxm->width = AV_RL32(&header[i + 36]);
@ -142,18 +142,18 @@ static int fourxm_read_header(AVFormatContext *s)
/* allocate a new AVStream */ /* allocate a new AVStream */
st = avformat_new_stream(s, NULL); st = avformat_new_stream(s, NULL);
if (!st){ if (!st) {
ret= AVERROR(ENOMEM); ret = AVERROR(ENOMEM);
goto fail; goto fail;
} }
avpriv_set_pts_info(st, 60, 1, fourxm->fps); avpriv_set_pts_info(st, 60, 1, fourxm->fps);
fourxm->video_stream_index = st->index; fourxm->video_stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = AV_CODEC_ID_4XM; st->codec->codec_id = AV_CODEC_ID_4XM;
st->codec->extradata_size = 4; st->codec->extradata_size = 4;
st->codec->extradata = av_malloc(4); st->codec->extradata = av_malloc(4);
AV_WL32(st->codec->extradata, AV_RL32(&header[i + 16])); AV_WL32(st->codec->extradata, AV_RL32(&header[i + 16]));
st->codec->width = fourxm->width; st->codec->width = fourxm->width;
st->codec->height = fourxm->height; st->codec->height = fourxm->height;
@ -188,24 +188,25 @@ static int fourxm_read_header(AVFormatContext *s)
fourxm->tracks[current_track].sample_rate = AV_RL32(&header[i + 40]); fourxm->tracks[current_track].sample_rate = AV_RL32(&header[i + 40]);
fourxm->tracks[current_track].bits = AV_RL32(&header[i + 44]); fourxm->tracks[current_track].bits = AV_RL32(&header[i + 44]);
fourxm->tracks[current_track].audio_pts = 0; fourxm->tracks[current_track].audio_pts = 0;
if( fourxm->tracks[current_track].channels <= 0 if (fourxm->tracks[current_track].channels <= 0 ||
|| fourxm->tracks[current_track].sample_rate <= 0 fourxm->tracks[current_track].sample_rate <= 0 ||
|| fourxm->tracks[current_track].bits < 0){ fourxm->tracks[current_track].bits < 0) {
av_log(s, AV_LOG_ERROR, "audio header invalid\n"); av_log(s, AV_LOG_ERROR, "audio header invalid\n");
ret= -1; ret = -1;
goto fail; goto fail;
} }
i += 8 + size; i += 8 + size;
/* allocate a new AVStream */ /* allocate a new AVStream */
st = avformat_new_stream(s, NULL); st = avformat_new_stream(s, NULL);
if (!st){ if (!st) {
ret= AVERROR(ENOMEM); ret = AVERROR(ENOMEM);
goto fail; goto fail;
} }
st->id = current_track; st->id = current_track;
avpriv_set_pts_info(st, 60, 1, fourxm->tracks[current_track].sample_rate); avpriv_set_pts_info(st, 60, 1,
fourxm->tracks[current_track].sample_rate);
fourxm->tracks[current_track].stream_index = st->index; fourxm->tracks[current_track].stream_index = st->index;
@ -219,17 +220,17 @@ static int fourxm_read_header(AVFormatContext *s)
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample; st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
if (fourxm->tracks[current_track].adpcm){ if (fourxm->tracks[current_track].adpcm){
st->codec->codec_id = AV_CODEC_ID_ADPCM_4XM; st->codec->codec_id = AV_CODEC_ID_ADPCM_4XM;
}else if (st->codec->bits_per_coded_sample == 8){ } else if (st->codec->bits_per_coded_sample == 8) {
st->codec->codec_id = AV_CODEC_ID_PCM_U8; st->codec->codec_id = AV_CODEC_ID_PCM_U8;
}else } else
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
} }
} }
/* skip over the LIST-MOVI chunk (which is where the stream should be */ /* skip over the LIST-MOVI chunk (which is where the stream should be */
GET_LIST_HEADER(); GET_LIST_HEADER();
if (fourcc_tag != MOVI_TAG){ if (fourcc_tag != MOVI_TAG) {
ret= AVERROR_INVALIDDATA; ret = AVERROR_INVALIDDATA;
goto fail; goto fail;
} }
@ -248,7 +249,7 @@ static int fourxm_read_packet(AVFormatContext *s,
AVPacket *pkt) AVPacket *pkt)
{ {
FourxmDemuxContext *fourxm = s->priv_data; FourxmDemuxContext *fourxm = s->priv_data;
AVIOContext *pb = s->pb; AVIOContext *pb = s->pb;
unsigned int fourcc_tag; unsigned int fourcc_tag;
unsigned int size; unsigned int size;
int ret = 0; int ret = 0;
@ -258,18 +259,16 @@ static int fourxm_read_packet(AVFormatContext *s,
int audio_frame_count; int audio_frame_count;
while (!packet_read) { while (!packet_read) {
if ((ret = avio_read(s->pb, header, 8)) < 0) if ((ret = avio_read(s->pb, header, 8)) < 0)
return ret; return ret;
fourcc_tag = AV_RL32(&header[0]); fourcc_tag = AV_RL32(&header[0]);
size = AV_RL32(&header[4]); size = AV_RL32(&header[4]);
if (pb->eof_reached) if (pb->eof_reached)
return AVERROR(EIO); return AVERROR(EIO);
switch (fourcc_tag) { switch (fourcc_tag) {
case LIST_TAG: case LIST_TAG:
/* this is a good time to bump the video pts */ /* this is a good time to bump the video pts */
fourxm->video_pts ++; fourxm->video_pts++;
/* skip the LIST-* tag and move on to the next fourcc */ /* skip the LIST-* tag and move on to the next fourcc */
avio_rl32(pb); avio_rl32(pb);
@ -286,45 +285,43 @@ static int fourxm_read_packet(AVFormatContext *s,
if (size + 8 < size || av_new_packet(pkt, size + 8)) if (size + 8 < size || av_new_packet(pkt, size + 8))
return AVERROR(EIO); return AVERROR(EIO);
pkt->stream_index = fourxm->video_stream_index; pkt->stream_index = fourxm->video_stream_index;
pkt->pts = fourxm->video_pts; pkt->pts = fourxm->video_pts;
pkt->pos = avio_tell(s->pb); pkt->pos = avio_tell(s->pb);
memcpy(pkt->data, header, 8); memcpy(pkt->data, header, 8);
ret = avio_read(s->pb, &pkt->data[8], size); ret = avio_read(s->pb, &pkt->data[8], size);
if (ret < 0){ if (ret < 0) {
av_free_packet(pkt); av_free_packet(pkt);
}else } else
packet_read = 1; packet_read = 1;
break; break;
case snd__TAG: case snd__TAG:
track_number = avio_rl32(pb); track_number = avio_rl32(pb);
avio_skip(pb, 4); avio_skip(pb, 4);
size-=8; size -= 8;
if (track_number < fourxm->track_count && fourxm->tracks[track_number].channels>0) { if (track_number < fourxm->track_count &&
ret= av_get_packet(s->pb, pkt, size); fourxm->tracks[track_number].channels > 0) {
if(ret<0) ret = av_get_packet(s->pb, pkt, size);
if (ret < 0)
return AVERROR(EIO); return AVERROR(EIO);
pkt->stream_index = pkt->stream_index =
fourxm->tracks[track_number].stream_index; fourxm->tracks[track_number].stream_index;
pkt->pts = fourxm->tracks[track_number].audio_pts; pkt->pts = fourxm->tracks[track_number].audio_pts;
packet_read = 1; packet_read = 1;
/* pts accounting */ /* pts accounting */
audio_frame_count = size; audio_frame_count = size;
if (fourxm->tracks[track_number].adpcm) if (fourxm->tracks[track_number].adpcm)
audio_frame_count -= audio_frame_count -= 2 * (fourxm->tracks[track_number].channels);
2 * (fourxm->tracks[track_number].channels); audio_frame_count /= fourxm->tracks[track_number].channels;
audio_frame_count /= if (fourxm->tracks[track_number].adpcm) {
fourxm->tracks[track_number].channels;
if (fourxm->tracks[track_number].adpcm){
audio_frame_count *= 2; audio_frame_count *= 2;
}else } else
audio_frame_count /= audio_frame_count /=
(fourxm->tracks[track_number].bits / 8); (fourxm->tracks[track_number].bits / 8);
fourxm->tracks[track_number].audio_pts += audio_frame_count; fourxm->tracks[track_number].audio_pts += audio_frame_count;
} else { } else {
avio_skip(pb, size); avio_skip(pb, size);
} }