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avformat/smacker: Cosmetics

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This is mainly about improving legibility of the code and getting rid of
overlong lines by using variables for st->codecpar instead of accessing
the codecparameters via st->codecpar->.

Also, some code has been moved to better fitting places.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-03-29 10:28:29 +02:00
parent a9ad8867c4
commit 95e9cf813e
1 changed files with 39 additions and 34 deletions
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73
libavformat/smacker.c
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@ -91,6 +91,7 @@ static int smacker_read_header(AVFormatContext *s)
AVIOContext *pb = s->pb;
SmackerContext *smk = s->priv_data;
AVStream *st;
AVCodecParameters *par;
uint32_t magic, width, height, flags, treesize;
int i, ret, pts_inc;
int tbase;
@ -129,6 +130,7 @@ static int smacker_read_header(AVFormatContext *s)
if (!st)
return AVERROR(ENOMEM);
smk->videoindex = st->index;
/* Smacker uses 100000 as internal timebase */
if (pts_inc < 0)
pts_inc = -pts_inc;
@ -137,23 +139,28 @@ static int smacker_read_header(AVFormatContext *s)
tbase = 100000;
av_reduce(&tbase, &pts_inc, tbase, pts_inc, (1UL << 31) - 1);
avpriv_set_pts_info(st, 33, pts_inc, tbase);
st->duration = smk->frames;
/* init video codec */
st->codecpar->width = width;
st->codecpar->height = height;
st->codecpar->codec_tag = magic;
par = st->codecpar;
par->width = width;
par->height = height;
par->format = AV_PIX_FMT_PAL8;
par->codec_type = AVMEDIA_TYPE_VIDEO;
par->codec_id = AV_CODEC_ID_SMACKVIDEO;
par->codec_tag = magic;
if ((ret = ff_alloc_extradata(st->codecpar, treesize + 16)) < 0) {
if ((ret = ff_alloc_extradata(par, treesize + 16)) < 0) {
av_log(s, AV_LOG_ERROR,
"Cannot allocate %"PRIu32" bytes of extradata\n",
treesize + 16);
return ret;
}
if ((ret = ffio_read_size(pb, st->codecpar->extradata, 16)) < 0)
if ((ret = ffio_read_size(pb, par->extradata, 16)) < 0)
return ret;
/* handle possible audio streams */
for(i = 0; i < 7; i++) {
for (i = 0; i < 7; i++) {
uint32_t rate = avio_rl24(pb);
uint8_t aflag = avio_r8(pb);
@ -161,40 +168,44 @@ static int smacker_read_header(AVFormatContext *s)
if (rate) {
AVStream *ast = avformat_new_stream(s, NULL);
AVCodecParameters *par;
if (!ast)
return AVERROR(ENOMEM);
smk->indexes[i] = ast->index;
ast->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
par = ast->codecpar;
par->codec_type = AVMEDIA_TYPE_AUDIO;
if (aflag & SMK_AUD_BINKAUD) {
ast->codecpar->codec_id = AV_CODEC_ID_BINKAUDIO_RDFT;
par->codec_id = AV_CODEC_ID_BINKAUDIO_RDFT;
} else if (aflag & SMK_AUD_USEDCT) {
ast->codecpar->codec_id = AV_CODEC_ID_BINKAUDIO_DCT;
par->codec_id = AV_CODEC_ID_BINKAUDIO_DCT;
} else if (aflag & SMK_AUD_PACKED) {
ast->codecpar->codec_id = AV_CODEC_ID_SMACKAUDIO;
ast->codecpar->codec_tag = MKTAG('S', 'M', 'K', 'A');
par->codec_id = AV_CODEC_ID_SMACKAUDIO;
par->codec_tag = MKTAG('S', 'M', 'K', 'A');
} else {
ast->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
par->codec_id = AV_CODEC_ID_PCM_U8;
}
if (aflag & SMK_AUD_STEREO) {
ast->codecpar->channels = 2;
ast->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
par->channels = 2;
par->channel_layout = AV_CH_LAYOUT_STEREO;
} else {
ast->codecpar->channels = 1;
ast->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
par->channels = 1;
par->channel_layout = AV_CH_LAYOUT_MONO;
}
ast->codecpar->sample_rate = rate;
ast->codecpar->bits_per_coded_sample = (aflag & SMK_AUD_16BITS) ? 16 : 8;
if (ast->codecpar->bits_per_coded_sample == 16 &&
ast->codecpar->codec_id == AV_CODEC_ID_PCM_U8)
ast->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE;
avpriv_set_pts_info(ast, 64, 1, ast->codecpar->sample_rate
* ast->codecpar->channels * ast->codecpar->bits_per_coded_sample / 8);
par->sample_rate = rate;
par->bits_per_coded_sample = (aflag & SMK_AUD_16BITS) ? 16 : 8;
if (par->bits_per_coded_sample == 16 &&
par->codec_id == AV_CODEC_ID_PCM_U8)
par->codec_id = AV_CODEC_ID_PCM_S16LE;
avpriv_set_pts_info(ast, 64, 1, par->sample_rate * par->channels
* par->bits_per_coded_sample / 8);
}
}
avio_rl32(pb); /* padding */
/* setup data */
smk->frm_size = av_malloc_array(smk->frames, sizeof(*smk->frm_size));
smk->frm_size = av_malloc_array(smk->frames, sizeof(*smk->frm_size));
smk->frm_flags = av_malloc(smk->frames);
if (!smk->frm_size || !smk->frm_flags) {
av_freep(&smk->frm_size);
@ -203,22 +214,16 @@ static int smacker_read_header(AVFormatContext *s)
}
/* read frame info */
for(i = 0; i < smk->frames; i++) {
for (i = 0; i < smk->frames; i++) {
smk->frm_size[i] = avio_rl32(pb);
}
for(i = 0; i < smk->frames; i++) {
for (i = 0; i < smk->frames; i++) {
smk->frm_flags[i] = avio_r8(pb);
}
smk->videoindex = st->index;
st->codecpar->format = AV_PIX_FMT_PAL8;
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
st->codecpar->codec_id = AV_CODEC_ID_SMACKVIDEO;
st->duration = smk->frames;
/* load trees to extradata, they will be unpacked by decoder */
ret = avio_read(pb, st->codecpar->extradata + 16, st->codecpar->extradata_size - 16);
if(ret != st->codecpar->extradata_size - 16){
ret = avio_read(pb, par->extradata + 16, par->extradata_size - 16);
if (ret != par->extradata_size - 16) {
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
return AVERROR(EIO);