static int adx_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr)
{
ADXContext *c = avctx->priv_data;
const int16_t *samples = (const int16_t *)frame->data[0];
uint8_t *dst;
int ch, out_size, ret;
out_size = BLOCK_SIZE * avctx->channels + !c->header_parsed * HEADER_SIZE;
if ((ret = ff_alloc_packet2(avctx, avpkt, out_size)) < 0)
return ret;
dst = avpkt->data;
if (!c->header_parsed) {
int hdrsize;
if ((hdrsize = adx_encode_header(avctx, dst, avpkt->size)) < 0) {
av_log(avctx, AV_LOG_ERROR, "output buffer is too small\n");
return AVERROR(EINVAL);
}
dst += hdrsize;
c->header_parsed = 1;
}
for (ch = 0; ch < avctx->channels; ch++) {
adx_encode(c, dst, samples + ch, &c->prev[ch], avctx->channels);
dst += BLOCK_SIZE;
}
*got_packet_ptr = 1;
return 0;
}
static int adx_encode_frame(AVCodecContext *avctx,
uint8_t *frame, int buf_size, void *data)
{
ADXContext *c = avctx->priv_data;
const short *samples = data;
unsigned char *dst = frame;
int rest = avctx->frame_size;
/*
input data size =
ffmpeg.c: do_audio_out()
frame_bytes = enc->frame_size * 2 * enc->channels;
*/
// printf("sz=%d ",buf_size); fflush(stdout);
if (!c->header_parsed) {
int hdrsize = adx_encode_header(avctx,dst,buf_size);
dst+=hdrsize;
c->header_parsed = 1;
}
if (avctx->channels==1) {
while(rest>=32) {
adx_encode(dst,samples,c->prev);
dst+=18;
samples+=32;
rest-=32;
}
} else {
while(rest>=32*2) {
short tmpbuf[32*2];
int i;
for(i=0;i<32;i++) {
tmpbuf[i] = samples[i*2];
tmpbuf[i+32] = samples[i*2+1];
}
adx_encode(dst,tmpbuf,c->prev);
adx_encode(dst+18,tmpbuf+32,c->prev+1);
dst+=18*2;
samples+=32*2;
rest-=32*2;
}
}
return dst-frame;
}