#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
+#include "internal.h"
#include "mathops.h"
typedef struct DPCMContext {
- AVFrame frame;
- int channels;
int16_t roq_square_array[256];
int sample[2]; ///< previous sample (for SOL_DPCM)
const int8_t *sol_table; ///< delta table for SOL_DPCM
return AVERROR(EINVAL);
}
- s->channels = avctx->channels;
s->sample[0] = s->sample[1] = 0;
switch(avctx->codec->id) {
else
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
- avcodec_get_frame_defaults(&s->frame);
- avctx->coded_frame = &s->frame;
-
return 0;
}
{
int buf_size = avpkt->size;
DPCMContext *s = avctx->priv_data;
+ AVFrame *frame = data;
int out = 0, ret;
int predictor[2];
int ch = 0;
- int stereo = s->channels - 1;
+ int stereo = avctx->channels - 1;
int16_t *output_samples, *samples_end;
GetByteContext gb;
out = buf_size - 8;
break;
case AV_CODEC_ID_INTERPLAY_DPCM:
- out = buf_size - 6 - s->channels;
+ out = buf_size - 6 - avctx->channels;
break;
case AV_CODEC_ID_XAN_DPCM:
- out = buf_size - 2 * s->channels;
+ out = buf_size - 2 * avctx->channels;
break;
case AV_CODEC_ID_SOL_DPCM:
if (avctx->codec_tag != 3)
}
/* get output buffer */
- s->frame.nb_samples = out / s->channels;
- if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+ frame->nb_samples = out / avctx->channels;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
- output_samples = (int16_t *)s->frame.data[0];
+ output_samples = (int16_t *)frame->data[0];
samples_end = output_samples + out;
switch(avctx->codec->id) {
case AV_CODEC_ID_INTERPLAY_DPCM:
bytestream2_skipu(&gb, 6); /* skip over the stream mask and stream length */
- for (ch = 0; ch < s->channels; ch++) {
+ for (ch = 0; ch < avctx->channels; ch++) {
predictor[ch] = sign_extend(bytestream2_get_le16u(&gb), 16);
*output_samples++ = predictor[ch];
}
{
int shift[2] = { 4, 4 };
- for (ch = 0; ch < s->channels; ch++)
+ for (ch = 0; ch < avctx->channels; ch++)
predictor[ch] = sign_extend(bytestream2_get_le16u(&gb), 16);
ch = 0;
}
case AV_CODEC_ID_SOL_DPCM:
if (avctx->codec_tag != 3) {
- uint8_t *output_samples_u8 = s->frame.data[0],
+ uint8_t *output_samples_u8 = frame->data[0],
*samples_end_u8 = output_samples_u8 + out;
while (output_samples_u8 < samples_end_u8) {
int n = bytestream2_get_byteu(&gb);
break;
}
- *got_frame_ptr = 1;
- *(AVFrame *)data = s->frame;
+ *got_frame_ptr = 1;
return avpkt->size;
}