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lavf/pcmdec: Map mime_type audio/L16 to the s16le demuxer.

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Implements RFC 2586.
This commit is contained in:
Carl Eugen Hoyos 2016-08-17 18:07:24 +02:00
parent fabff10244
commit 4c42d30602
2 changed files with 33 additions and 3 deletions
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34
libavformat/pcmdec.c
View File

@ -36,6 +36,7 @@ static int pcm_read_header(AVFormatContext *s)
{
PCMAudioDemuxerContext *s1 = s->priv_data;
AVStream *st;
uint8_t *mime_type = NULL;
st = avformat_new_stream(s, NULL);
if (!st)
@ -47,6 +48,34 @@ static int pcm_read_header(AVFormatContext *s)
st->codecpar->sample_rate = s1->sample_rate;
st->codecpar->channels = s1->channels;
av_opt_get(s->pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type);
if (mime_type && s->iformat->mime_type) {
int rate = 0, channels = 0;
size_t len = strlen(s->iformat->mime_type);
if (!strncmp(s->iformat->mime_type, mime_type, len)) {
uint8_t *options = mime_type + len;
len = strlen(mime_type);
while (options < mime_type + len) {
options = strstr(options, ";");
if (!options++)
break;
if (!rate)
sscanf(options, " rate=%d", &rate);
if (!channels)
sscanf(options, " channels=%d", &channels);
}
if (rate <= 0) {
av_log(s, AV_LOG_ERROR,
"Invalid sample_rate found in mime_type \"%s\"\n",
mime_type);
return AVERROR_INVALIDDATA;
}
st->codecpar->sample_rate = rate;
if (channels > 0)
st->codecpar->channels = channels;
}
}
st->codecpar->bits_per_coded_sample =
av_get_bits_per_sample(st->codecpar->codec_id);
@ -65,7 +94,7 @@ static const AVOption pcm_options[] = {
{ NULL },
};
#define PCMDEF(name_, long_name_, ext, codec) \
#define PCMDEF(name_, long_name_, ext, codec, ...) \
static const AVClass name_ ## _demuxer_class = { \
.class_name = #name_ " demuxer", \
.item_name = av_default_item_name, \
@ -82,6 +111,7 @@ AVInputFormat ff_pcm_ ## name_ ## _demuxer = { \
.flags = AVFMT_GENERIC_INDEX, \
.extensions = ext, \
.raw_codec_id = codec, \
__VA_ARGS__ \
.priv_class = &name_ ## _demuxer_class, \
};
@ -113,7 +143,7 @@ PCMDEF(s16be, "PCM signed 16-bit big-endian",
AV_NE("sw", NULL), AV_CODEC_ID_PCM_S16BE)
PCMDEF(s16le, "PCM signed 16-bit little-endian",
AV_NE(NULL, "sw"), AV_CODEC_ID_PCM_S16LE)
AV_NE(NULL, "sw"), AV_CODEC_ID_PCM_S16LE, .mime_type = "audio/L16",)
PCMDEF(s8, "PCM signed 8-bit",
"sb", AV_CODEC_ID_PCM_S8)

2
libavformat/version.h
View File

@ -33,7 +33,7 @@
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 57
#define LIBAVFORMAT_VERSION_MINOR 47
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_MICRO 101
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \