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Code Issues Releases Activity

Get rid of the redundant AVG726Context.

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Originally committed as revision 13803 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-06-18 20:51:12 +00:00
parent ef4c5c6dba
commit c79c1a01a7
1 changed files with 10 additions and 14 deletions
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24
libavcodec/g726.c
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@ -89,6 +89,7 @@ typedef struct G726Context {
int se; /**< estimated signal for the next iteration */ int se; /**< estimated signal for the next iteration */
int sez; /**< estimated second order prediction */ int sez; /**< estimated second order prediction */
int y; /**< quantizer scaling factor for the next iteration */ int y; /**< quantizer scaling factor for the next iteration */
int code_size;
} G726Context; } G726Context;
static const int quant_tbl16[] = /**< 16kbit/s 2bits per sample */ static const int quant_tbl16[] = /**< 16kbit/s 2bits per sample */
@ -299,14 +300,9 @@ static int16_t g726_encode(G726Context* c, int16_t sig)
/* Interfacing to the libavcodec */ /* Interfacing to the libavcodec */
typedef struct AVG726Context {
G726Context c;
int code_size;
} AVG726Context;
static av_cold int g726_init(AVCodecContext * avctx) static av_cold int g726_init(AVCodecContext * avctx)
{ {
AVG726Context* c = (AVG726Context*)avctx->priv_data; G726Context* c = avctx->priv_data;
unsigned int index= (avctx->bit_rate + avctx->sample_rate/2) / avctx->sample_rate - 2; unsigned int index= (avctx->bit_rate + avctx->sample_rate/2) / avctx->sample_rate - 2;
if (avctx->bit_rate % avctx->sample_rate && avctx->codec->encode) { if (avctx->bit_rate % avctx->sample_rate && avctx->codec->encode) {
@ -321,8 +317,8 @@ static av_cold int g726_init(AVCodecContext * avctx)
av_log(avctx, AV_LOG_ERROR, "Unsupported number of bits %d\n", index+2); av_log(avctx, AV_LOG_ERROR, "Unsupported number of bits %d\n", index+2);
return -1; return -1;
} }
g726_reset(&c->c, index); g726_reset(c, index);
c->code_size = c->c.tbls->bits; c->code_size = c->tbls->bits;
avctx->coded_frame = avcodec_alloc_frame(); avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame) if (!avctx->coded_frame)
@ -342,14 +338,14 @@ static av_cold int g726_close(AVCodecContext *avctx)
static int g726_encode_frame(AVCodecContext *avctx, static int g726_encode_frame(AVCodecContext *avctx,
uint8_t *dst, int buf_size, void *data) uint8_t *dst, int buf_size, void *data)
{ {
AVG726Context *c = avctx->priv_data; G726Context *c = avctx->priv_data;
short *samples = data; short *samples = data;
PutBitContext pb; PutBitContext pb;
init_put_bits(&pb, dst, 1024*1024); init_put_bits(&pb, dst, 1024*1024);
for (; buf_size; buf_size--) for (; buf_size; buf_size--)
put_bits(&pb, c->code_size, g726_encode(&c->c, *samples++)); put_bits(&pb, c->code_size, g726_encode(c, *samples++));
flush_put_bits(&pb); flush_put_bits(&pb);
@ -361,14 +357,14 @@ static int g726_decode_frame(AVCodecContext *avctx,
void *data, int *data_size, void *data, int *data_size,
const uint8_t *buf, int buf_size) const uint8_t *buf, int buf_size)
{ {
AVG726Context *c = avctx->priv_data; G726Context *c = avctx->priv_data;
short *samples = data; short *samples = data;
GetBitContext gb; GetBitContext gb;
init_get_bits(&gb, buf, buf_size * 8); init_get_bits(&gb, buf, buf_size * 8);
while (get_bits_count(&gb) + c->code_size <= buf_size*8) while (get_bits_count(&gb) + c->code_size <= buf_size*8)
*samples++ = g726_decode(&c->c, get_bits(&gb, c->code_size)); *samples++ = g726_decode(c, get_bits(&gb, c->code_size));
if(buf_size*8 != get_bits_count(&gb)) if(buf_size*8 != get_bits_count(&gb))
av_log(avctx, AV_LOG_ERROR, "Frame invalidly split, missing parser?\n"); av_log(avctx, AV_LOG_ERROR, "Frame invalidly split, missing parser?\n");
@ -382,7 +378,7 @@ AVCodec adpcm_g726_encoder = {
"g726", "g726",
CODEC_TYPE_AUDIO, CODEC_TYPE_AUDIO,
CODEC_ID_ADPCM_G726, CODEC_ID_ADPCM_G726,
sizeof(AVG726Context), sizeof(G726Context),
g726_init, g726_init,
g726_encode_frame, g726_encode_frame,
g726_close, g726_close,
@ -395,7 +391,7 @@ AVCodec adpcm_g726_decoder = {
"g726", "g726",
CODEC_TYPE_AUDIO, CODEC_TYPE_AUDIO,
CODEC_ID_ADPCM_G726, CODEC_ID_ADPCM_G726,
sizeof(AVG726Context), sizeof(G726Context),
g726_init, g726_init,
NULL, NULL,
g726_close, g726_close,