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4xm: K&R formatting cosmetics

tags/n2.0
Luca Barbato 12 years ago
parent
08859d19b4
commit
e6496ea7e7
1 changed files with 41 additions and 44 deletions
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  1. +41
    -44
      libavformat/4xm.c

+ 41
- 44
libavformat/4xm.c View File

@@ -57,7 +57,7 @@

#define GET_LIST_HEADER() \
fourcc_tag = avio_rl32(pb); \
size = avio_rl32(pb); \
size = avio_rl32(pb); \
if (fourcc_tag != LIST_TAG) \
return AVERROR_INVALIDDATA; \
fourcc_tag = avio_rl32(pb);
@@ -103,8 +103,8 @@ static int fourxm_read_header(AVFormatContext *s)
AVStream *st;

fourxm->track_count = 0;
fourxm->tracks = NULL;
fourxm->fps = 1.0;
fourxm->tracks = NULL;
fourxm->fps = 1.0;

/* skip the first 3 32-bit numbers */
avio_skip(pb, 12);
@@ -119,7 +119,7 @@ static int fourxm_read_header(AVFormatContext *s)
header = av_malloc(header_size);
if (!header)
return AVERROR(ENOMEM);
if (avio_read(pb, header, header_size) != header_size){
if (avio_read(pb, header, header_size) != header_size) {
av_free(header);
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 */
for (i = 0; i < header_size - 8; i++) {
fourcc_tag = AV_RL32(&header[i]);
size = AV_RL32(&header[i + 4]);
size = AV_RL32(&header[i + 4]);

if (fourcc_tag == std__TAG) {
fourxm->fps = av_int2float(AV_RL32(&header[i + 12]));
} else if (fourcc_tag == vtrk_TAG) {
/* check that there is enough data */
if (size != vtrk_SIZE) {
ret= AVERROR_INVALIDDATA;
ret = AVERROR_INVALIDDATA;
goto fail;
}
fourxm->width = AV_RL32(&header[i + 36]);
@@ -142,18 +142,18 @@ static int fourxm_read_header(AVFormatContext *s)

/* allocate a new AVStream */
st = avformat_new_stream(s, NULL);
if (!st){
ret= AVERROR(ENOMEM);
if (!st) {
ret = AVERROR(ENOMEM);
goto fail;
}
avpriv_set_pts_info(st, 60, 1, fourxm->fps);

fourxm->video_stream_index = st->index;

st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = AV_CODEC_ID_4XM;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = AV_CODEC_ID_4XM;
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]));
st->codec->width = fourxm->width;
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].bits = AV_RL32(&header[i + 44]);
fourxm->tracks[current_track].audio_pts = 0;
if( fourxm->tracks[current_track].channels <= 0
|| fourxm->tracks[current_track].sample_rate <= 0
|| fourxm->tracks[current_track].bits < 0){
if (fourxm->tracks[current_track].channels <= 0 ||
fourxm->tracks[current_track].sample_rate <= 0 ||
fourxm->tracks[current_track].bits < 0) {
av_log(s, AV_LOG_ERROR, "audio header invalid\n");
ret= -1;
ret = -1;
goto fail;
}
i += 8 + size;

/* allocate a new AVStream */
st = avformat_new_stream(s, NULL);
if (!st){
ret= AVERROR(ENOMEM);
if (!st) {
ret = AVERROR(ENOMEM);
goto fail;
}

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;

@@ -219,17 +220,17 @@ static int fourxm_read_header(AVFormatContext *s)
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
if (fourxm->tracks[current_track].adpcm){
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;
}else
} else
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
}
}

/* skip over the LIST-MOVI chunk (which is where the stream should be */
GET_LIST_HEADER();
if (fourcc_tag != MOVI_TAG){
ret= AVERROR_INVALIDDATA;
if (fourcc_tag != MOVI_TAG) {
ret = AVERROR_INVALIDDATA;
goto fail;
}

@@ -248,7 +249,7 @@ static int fourxm_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
FourxmDemuxContext *fourxm = s->priv_data;
AVIOContext *pb = s->pb;
AVIOContext *pb = s->pb;
unsigned int fourcc_tag;
unsigned int size;
int ret = 0;
@@ -258,18 +259,16 @@ static int fourxm_read_packet(AVFormatContext *s,
int audio_frame_count;

while (!packet_read) {

if ((ret = avio_read(s->pb, header, 8)) < 0)
return ret;
fourcc_tag = AV_RL32(&header[0]);
size = AV_RL32(&header[4]);
size = AV_RL32(&header[4]);
if (pb->eof_reached)
return AVERROR(EIO);
switch (fourcc_tag) {

case LIST_TAG:
/* 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 */
avio_rl32(pb);
@@ -286,45 +285,43 @@ static int fourxm_read_packet(AVFormatContext *s,
if (size + 8 < size || av_new_packet(pkt, size + 8))
return AVERROR(EIO);
pkt->stream_index = fourxm->video_stream_index;
pkt->pts = fourxm->video_pts;
pkt->pos = avio_tell(s->pb);
pkt->pts = fourxm->video_pts;
pkt->pos = avio_tell(s->pb);
memcpy(pkt->data, header, 8);
ret = avio_read(s->pb, &pkt->data[8], size);

if (ret < 0){
if (ret < 0) {
av_free_packet(pkt);
}else
} else
packet_read = 1;
break;

case snd__TAG:
track_number = avio_rl32(pb);
avio_skip(pb, 4);
size-=8;
size -= 8;

if (track_number < fourxm->track_count && fourxm->tracks[track_number].channels>0) {
ret= av_get_packet(s->pb, pkt, size);
if(ret<0)
if (track_number < fourxm->track_count &&
fourxm->tracks[track_number].channels > 0) {
ret = av_get_packet(s->pb, pkt, size);
if (ret < 0)
return AVERROR(EIO);
pkt->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;

/* pts accounting */
audio_frame_count = size;
if (fourxm->tracks[track_number].adpcm)
audio_frame_count -=
2 * (fourxm->tracks[track_number].channels);
audio_frame_count /=
fourxm->tracks[track_number].channels;
if (fourxm->tracks[track_number].adpcm){
audio_frame_count -= 2 * (fourxm->tracks[track_number].channels);
audio_frame_count /= fourxm->tracks[track_number].channels;
if (fourxm->tracks[track_number].adpcm) {
audio_frame_count *= 2;
}else
} else
audio_frame_count /=
(fourxm->tracks[track_number].bits / 8);
(fourxm->tracks[track_number].bits / 8);
fourxm->tracks[track_number].audio_pts += audio_frame_count;

} else {
avio_skip(pb, size);
}


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