static int decode_tag(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
const uint8_t *side=av_packet_get_side_data(avpkt, 'F', NULL);
int buf_size = avpkt->size;
NellyMoserDecodeContext *s = avctx->priv_data;
int blocks, i, ret;
int16_t *samples_s16;
float *samples_flt;
blocks = buf_size / NELLY_BLOCK_LEN;
if (blocks <= 0) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
return AVERROR_INVALIDDATA;
}
if (buf_size % NELLY_BLOCK_LEN) {
av_log(avctx, AV_LOG_WARNING, "Leftover bytes: %d.\n",
buf_size % NELLY_BLOCK_LEN);
}
/* Normal numbers of blocks for sample rates:
* 8000 Hz - 1
* 11025 Hz - 2
* 16000 Hz - 3
* 22050 Hz - 4
* 44100 Hz - 8
*/
if(side && blocks>1 && avctx->sample_rate%11025==0 && (1<<((side[0]>>2)&3)) == blocks)
avctx->sample_rate= 11025*(blocks/2);
/* get output buffer */
s->frame.nb_samples = NELLY_SAMPLES * blocks;
if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
samples_s16 = (int16_t *)s->frame.data[0];
samples_flt = (float *)s->frame.data[0];
for (i=0 ; i<blocks ; i++) {
if (avctx->sample_fmt == SAMPLE_FMT_FLT) {
nelly_decode_block(s, buf, samples_flt);
samples_flt += NELLY_SAMPLES;
} else {
nelly_decode_block(s, buf, s->float_buf);
s->fmt_conv.float_to_int16(samples_s16, s->float_buf, NELLY_SAMPLES);
samples_s16 += NELLY_SAMPLES;
}
buf += NELLY_BLOCK_LEN;
}
*got_frame_ptr = 1;
*(AVFrame *)data = s->frame;
return buf_size;
}
static int decode_tag(AVCodecContext * avctx,
void *data, int *data_size,
AVPacket *avpkt) {
const uint8_t *buf = avpkt->data;
const uint8_t *side=av_packet_get_side_data(avpkt, 'F', NULL);
int buf_size = avpkt->size;
NellyMoserDecodeContext *s = avctx->priv_data;
int data_max = *data_size;
int blocks, i, block_size;
int16_t *samples_s16 = data;
float *samples_flt = data;
*data_size = 0;
block_size = NELLY_SAMPLES * av_get_bytes_per_sample(avctx->sample_fmt);
blocks = buf_size / NELLY_BLOCK_LEN;
if (blocks <= 0) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
return AVERROR_INVALIDDATA;
}
if (data_max < blocks * block_size) {
av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
return AVERROR(EINVAL);
}
if (buf_size % NELLY_BLOCK_LEN) {
av_log(avctx, AV_LOG_WARNING, "Leftover bytes: %d.\n",
buf_size % NELLY_BLOCK_LEN);
}
/* Normal numbers of blocks for sample rates:
* 8000 Hz - 1
* 11025 Hz - 2
* 16000 Hz - 3
* 22050 Hz - 4
* 44100 Hz - 8
*/
if(side && blocks>1 && avctx->sample_rate%11025==0 && (1<<((side[0]>>2)&3)) == blocks)
avctx->sample_rate= 11025*(blocks/2);
for (i=0 ; i<blocks ; i++) {
if (avctx->sample_fmt == SAMPLE_FMT_FLT) {
nelly_decode_block(s, buf, samples_flt);
samples_flt += NELLY_SAMPLES;
} else {
nelly_decode_block(s, buf, s->float_buf);
s->fmt_conv.float_to_int16(samples_s16, s->float_buf, NELLY_SAMPLES);
samples_s16 += NELLY_SAMPLES;
}
buf += NELLY_BLOCK_LEN;
}
*data_size = blocks * block_size;
return buf_size;
}
static int decode_tag(AVCodecContext * avctx,
void *data, int *data_size,
AVPacket *avpkt) {
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
NellyMoserDecodeContext *s = avctx->priv_data;
int data_max = *data_size;
int blocks, i, block_size;
int16_t *samples_s16 = data;
float *samples_flt = data;
*data_size = 0;
if (buf_size < avctx->block_align) {
return buf_size;
}
if (buf_size % NELLY_BLOCK_LEN) {
av_log(avctx, AV_LOG_ERROR, "Tag size %d.\n", buf_size);
return buf_size;
}
block_size = NELLY_SAMPLES * av_get_bytes_per_sample(avctx->sample_fmt);
blocks = FFMIN(buf_size / NELLY_BLOCK_LEN, data_max / block_size);
if (blocks <= 0) {
av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
return AVERROR(EINVAL);
}
/* Normal numbers of blocks for sample rates:
* 8000 Hz - 1
* 11025 Hz - 2
* 16000 Hz - 3
* 22050 Hz - 4
* 44100 Hz - 8
*/
for (i=0 ; i<blocks ; i++) {
if (avctx->sample_fmt == SAMPLE_FMT_FLT) {
nelly_decode_block(s, buf, samples_flt);
samples_flt += NELLY_SAMPLES;
} else {
nelly_decode_block(s, buf, s->float_buf);
s->fmt_conv.float_to_int16(samples_s16, s->float_buf, NELLY_SAMPLES);
samples_s16 += NELLY_SAMPLES;
}
buf += NELLY_BLOCK_LEN;
}
*data_size = blocks * block_size;
return buf_size;
}
static int decode_tag(AVCodecContext * avctx,
void *data, int *data_size,
const uint8_t * buf, int buf_size) {
NellyMoserDecodeContext *s = avctx->priv_data;
int blocks, i;
int16_t* samples;
*data_size = 0;
samples = (int16_t*)data;
if (buf_size < avctx->block_align)
return buf_size;
switch (buf_size) {
case 64: // 8000Hz
blocks = 1; break;
case 128: // 11025Hz
blocks = 2; break;
case 256: // 22050Hz
blocks = 4; break;
case 512: // 44100Hz
blocks = 8; break;
default:
av_log(avctx, AV_LOG_DEBUG, "Tag size %d.\n", buf_size);
return buf_size;
}
for (i=0 ; i<blocks ; i++) {
nelly_decode_block(s, &buf[i*NELLY_BLOCK_LEN], s->float_buf);
s->dsp.float_to_int16(&samples[i*NELLY_SAMPLES], s->float_buf, NELLY_SAMPLES);
*data_size += NELLY_SAMPLES*sizeof(int16_t);
}
return buf_size;
}
static int decode_tag(AVCodecContext * avctx,
void *data, int *data_size,
AVPacket *avpkt) {
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
NellyMoserDecodeContext *s = avctx->priv_data;
int blocks, i;
int16_t* samples;
*data_size = 0;
samples = (int16_t*)data;
if (buf_size < avctx->block_align)
return buf_size;
if (buf_size % 64) {
av_log(avctx, AV_LOG_ERROR, "Tag size %d.\n", buf_size);
return buf_size;
}
blocks = buf_size / 64;
/* Normal numbers of blocks for sample rates:
* 8000 Hz - 1
* 11025 Hz - 2
* 16000 Hz - 3
* 22050 Hz - 4
* 44100 Hz - 8
*/
for (i=0 ; i<blocks ; i++) {
nelly_decode_block(s, &buf[i*NELLY_BLOCK_LEN], s->float_buf);
s->dsp.float_to_int16(&samples[i*NELLY_SAMPLES], s->float_buf, NELLY_SAMPLES);
*data_size += NELLY_SAMPLES*sizeof(int16_t);
}
return buf_size;
}
static int decode_tag(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
const uint8_t *side=av_packet_get_side_data(avpkt, 'F', NULL);
int buf_size = avpkt->size;
NellyMoserDecodeContext *s = avctx->priv_data;
int blocks, i, ret;
float *samples_flt;
blocks = buf_size / NELLY_BLOCK_LEN;
if (blocks <= 0) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
return AVERROR_INVALIDDATA;
}
if (buf_size % NELLY_BLOCK_LEN) {
av_log(avctx, AV_LOG_WARNING, "Leftover bytes: %d.\n",
buf_size % NELLY_BLOCK_LEN);
}
/* Normal numbers of blocks for sample rates:
* 8000 Hz - 1
* 11025 Hz - 2
* 16000 Hz - 3
* 22050 Hz - 4
* 44100 Hz - 8
*/
if(side && blocks>1 && avctx->sample_rate%11025==0 && (1<<((side[0]>>2)&3)) == blocks)
avctx->sample_rate= 11025*(blocks/2);
/* get output buffer */
frame->nb_samples = NELLY_SAMPLES * blocks;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
samples_flt = (float *)frame->data[0];
for (i=0 ; i<blocks ; i++) {
nelly_decode_block(s, buf, samples_flt);
samples_flt += NELLY_SAMPLES;
buf += NELLY_BLOCK_LEN;
}
*got_frame_ptr = 1;
return buf_size;
}
