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avcodec: Add little-endian G726 decoder 

Fixes part of Ticket1955
suggested by Roman.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Carl Eugen Hoyos 2013-07-11 14:06:20 +02:00 committed by Michael Niedermayer
parent 5b9f39860d
commit 10c240a085
5 changed files with 33 additions and 3 deletions
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1
libavcodec/allcodecs.c
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@ -433,6 +433,7 @@ void avcodec_register_all(void)
REGISTER_DECODER(ADPCM_EA_XAS, adpcm_ea_xas);
REGISTER_ENCDEC (ADPCM_G722, adpcm_g722);
REGISTER_ENCDEC (ADPCM_G726, adpcm_g726);
REGISTER_DECODER(ADPCM_G726LE, adpcm_g726le);
REGISTER_DECODER(ADPCM_IMA_AMV, adpcm_ima_amv);
REGISTER_DECODER(ADPCM_IMA_APC, adpcm_ima_apc);
REGISTER_DECODER(ADPCM_IMA_DK3, adpcm_ima_dk3);

1
libavcodec/avcodec.h
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@ -377,6 +377,7 @@ enum AVCodecID {
AV_CODEC_ID_ADPCM_IMA_OKI = MKBETAG('O','K','I',' '),
AV_CODEC_ID_ADPCM_DTK = MKBETAG('D','T','K',' '),
AV_CODEC_ID_ADPCM_IMA_RAD = MKBETAG('R','A','D',' '),
AV_CODEC_ID_ADPCM_G726LE = MKBETAG('6','2','7','G'),
/* AMR */
AV_CODEC_ID_AMR_NB = 0x12000,

7
libavcodec/codec_desc.c
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@ -1853,6 +1853,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Radical"),
.props = AV_CODEC_PROP_LOSSY,
},
{
.id = AV_CODEC_ID_ADPCM_G726LE,
.type = AVMEDIA_TYPE_AUDIO,
.name = "adpcm_g726le",
.long_name = NULL_IF_CONFIG_SMALL("G.726 ADPCM little-endian"),
.props = AV_CODEC_PROP_LOSSY,
},
/* AMR */
{

25
libavcodec/g726.c
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@ -96,6 +96,7 @@ typedef struct G726Context {
int sez; /**< estimated second order prediction */
int y; /**< quantizer scaling factor for the next iteration */
int code_size;
int little_endian; /**< little-endian bitstream as used in aiff and Sun AU */
} G726Context;
static const int quant_tbl16[] = /**< 16kbit/s 2bits per sample */
@ -396,7 +397,7 @@ AVCodec ff_adpcm_g726_encoder = {
};
#endif
#if CONFIG_ADPCM_G726_DECODER
#if CONFIG_ADPCM_G726_DECODER || CONFIG_ADPCM_G726LE_DECODER
static av_cold int g726_decode_init(AVCodecContext *avctx)
{
G726Context* c = avctx->priv_data;
@ -408,6 +409,8 @@ static av_cold int g726_decode_init(AVCodecContext *avctx)
avctx->channels = 1;
avctx->channel_layout = AV_CH_LAYOUT_MONO;
c->little_endian = !strcmp(avctx->codec->name, "g726le");
c->code_size = avctx->bits_per_coded_sample;
if (c->code_size < 2 || c->code_size > 5) {
av_log(avctx, AV_LOG_ERROR, "Invalid number of bits %d\n", c->code_size);
@ -442,7 +445,9 @@ static int g726_decode_frame(AVCodecContext *avctx, void *data,
init_get_bits(&gb, buf, buf_size * 8);
while (out_samples--)
*samples++ = g726_decode(c, get_bits(&gb, c->code_size));
*samples++ = g726_decode(c, c->little_endian ?
get_bits_le(&gb, c->code_size) :
get_bits(&gb, c->code_size));
if (get_bits_left(&gb) > 0)
av_log(avctx, AV_LOG_ERROR, "Frame invalidly split, missing parser?\n");
@ -457,7 +462,9 @@ static void g726_decode_flush(AVCodecContext *avctx)
G726Context *c = avctx->priv_data;
g726_reset(c);
}
#endif
#if CONFIG_ADPCM_G726_DECODER
AVCodec ff_adpcm_g726_decoder = {
.name = "g726",
.long_name = NULL_IF_CONFIG_SMALL("G.726 ADPCM"),
@ -470,3 +477,17 @@ AVCodec ff_adpcm_g726_decoder = {
.capabilities = CODEC_CAP_DR1,
};
#endif
#if CONFIG_ADPCM_G726LE_DECODER
AVCodec ff_adpcm_g726le_decoder = {
.name = "g726le",
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_ADPCM_G726LE,
.priv_data_size = sizeof(G726Context),
.init = g726_decode_init,
.decode = g726_decode_frame,
.flush = g726_decode_flush,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("G.726 ADPCM little-endian"),
};
#endif

2
libavcodec/version.h
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@ -30,7 +30,7 @@
#define LIBAVCODEC_VERSION_MAJOR 55
#define LIBAVCODEC_VERSION_MINOR 37
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \