int format, channels, bps;
unsigned data_length;
- int frame_length, last_frame_length, total_frames;
+ int frame_length, last_frame_length;
int32_t *decode_buffer;
static av_cold int tta_decode_init(AVCodecContext * avctx)
{
TTAContext *s = avctx->priv_data;
+ int total_frames;
s->avctx = avctx;
s->frame_length = 256 * avctx->sample_rate / 245;
s->last_frame_length = s->data_length % s->frame_length;
- s->total_frames = s->data_length / s->frame_length +
- (s->last_frame_length ? 1 : 0);
+ total_frames = s->data_length / s->frame_length +
+ (s->last_frame_length ? 1 : 0);
av_log(s->avctx, AV_LOG_DEBUG, "format: %d chans: %d bps: %d rate: %d block: %d\n",
s->format, avctx->channels, avctx->bits_per_coded_sample, avctx->sample_rate,
avctx->block_align);
av_log(s->avctx, AV_LOG_DEBUG, "data_length: %d frame_length: %d last: %d total: %d\n",
- s->data_length, s->frame_length, s->last_frame_length, s->total_frames);
+ s->data_length, s->frame_length, s->last_frame_length, total_frames);
// FIXME: seek table
- if (avctx->extradata_size <= 26 || s->total_frames > INT_MAX / 4 ||
- avctx->extradata_size - 26 < s->total_frames * 4)
+ if (avctx->extradata_size <= 26 || total_frames > INT_MAX / 4 ||
+ avctx->extradata_size - 26 < total_frames * 4)
av_log(avctx, AV_LOG_WARNING, "Seek table missing or too small\n");
else if (avctx->err_recognition & AV_EF_CRCCHECK) {
- if (tta_check_crc(s, avctx->extradata + 22, s->total_frames * 4))
+ if (tta_check_crc(s, avctx->extradata + 22, total_frames * 4))
return AVERROR_INVALIDDATA;
}
- skip_bits_long(&s->gb, 32 * s->total_frames);
+ skip_bits_long(&s->gb, 32 * total_frames);
skip_bits_long(&s->gb, 32); // CRC32 of seektable
if(s->frame_length >= UINT_MAX / (s->channels * sizeof(int32_t))){
init_get_bits(&s->gb, buf, buf_size*8);
- // FIXME: seeking
- s->total_frames--;
- if (!s->total_frames && s->last_frame_length)
- framelen = s->last_frame_length;
-
/* get output buffer */
s->frame.nb_samples = framelen;
if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
rice_init(&s->ch_ctx[i].rice, 10, 10);
}
+ i = 0;
for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
int32_t *predictor = &s->ch_ctx[cur_chan].predictor;
TTAFilter *filter = &s->ch_ctx[cur_chan].filter;
*r = *(r + 1) - *r;
}
cur_chan = 0;
+ i++;
+ // check for last frame
+ if (i == s->last_frame_length && get_bits_left(&s->gb) / 8 == 4) {
+ s->frame.nb_samples = framelen = s->last_frame_length;
+ break;
+ }
}
}
+ align_get_bits(&s->gb);
if (get_bits_left(&s->gb) < 32) {
ret = AVERROR_INVALIDDATA;
goto error;