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ffmpeg.wasm-core
Commit 8664682d authored by Justin Ruggles's avatar Justin Ruggles
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cosmetics: indentation

parent 7b7a74a1
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Showing with 94 additions and 94 deletions
libavcodec/tta.c
View file @ 8664682d
......@@ -284,116 +284,116 @@ static int tta_decode_frame(AVCodecContext *avctx,
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;
// FIXME: seeking
s->total_frames--;
if (!s->total_frames && s->last_frame_length)
framelen = s->last_frame_length;
if (*data_size < (framelen * s->channels * 2)) {
av_log(avctx, AV_LOG_ERROR, "Output buffer size is too small.\n");
return -1;
}
if (*data_size < (framelen * s->channels * 2)) {
av_log(avctx, AV_LOG_ERROR, "Output buffer size is too small.\n");
return -1;
}
// init per channel states
for (i = 0; i < s->channels; i++) {
s->ch_ctx[i].predictor = 0;
ttafilter_init(&s->ch_ctx[i].filter, ttafilter_configs[s->bps-1][0], ttafilter_configs[s->bps-1][1]);
rice_init(&s->ch_ctx[i].rice, 10, 10);
}
// init per channel states
for (i = 0; i < s->channels; i++) {
s->ch_ctx[i].predictor = 0;
ttafilter_init(&s->ch_ctx[i].filter, ttafilter_configs[s->bps-1][0], ttafilter_configs[s->bps-1][1]);
rice_init(&s->ch_ctx[i].rice, 10, 10);
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;
TTARice *rice = &s->ch_ctx[cur_chan].rice;
uint32_t unary, depth, k;
int32_t value;
unary = tta_get_unary(&s->gb);
if (unary == 0) {
depth = 0;
k = rice->k0;
} else {
depth = 1;
k = rice->k1;
unary--;
}
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;
TTARice *rice = &s->ch_ctx[cur_chan].rice;
uint32_t unary, depth, k;
int32_t value;
unary = tta_get_unary(&s->gb);
if (unary == 0) {
depth = 0;
k = rice->k0;
} else {
depth = 1;
k = rice->k1;
unary--;
}
if (get_bits_left(&s->gb) < k)
return -1;
if (get_bits_left(&s->gb) < k)
if (k) {
if (k > MIN_CACHE_BITS)
return -1;
value = (unary << k) + get_bits(&s->gb, k);
} else
value = unary;
// FIXME: copy paste from original
switch (depth) {
case 1:
rice->sum1 += value - (rice->sum1 >> 4);
if (rice->k1 > 0 && rice->sum1 < shift_16[rice->k1])
rice->k1--;
else if(rice->sum1 > shift_16[rice->k1 + 1])
rice->k1++;
value += shift_1[rice->k0];
default:
rice->sum0 += value - (rice->sum0 >> 4);
if (rice->k0 > 0 && rice->sum0 < shift_16[rice->k0])
rice->k0--;
else if(rice->sum0 > shift_16[rice->k0 + 1])
rice->k0++;
}
if (k) {
if (k > MIN_CACHE_BITS)
return -1;
value = (unary << k) + get_bits(&s->gb, k);
} else
value = unary;
// FIXME: copy paste from original
switch (depth) {
case 1:
rice->sum1 += value - (rice->sum1 >> 4);
if (rice->k1 > 0 && rice->sum1 < shift_16[rice->k1])
rice->k1--;
else if(rice->sum1 > shift_16[rice->k1 + 1])
rice->k1++;
value += shift_1[rice->k0];
default:
rice->sum0 += value - (rice->sum0 >> 4);
if (rice->k0 > 0 && rice->sum0 < shift_16[rice->k0])
rice->k0--;
else if(rice->sum0 > shift_16[rice->k0 + 1])
rice->k0++;
}
// extract coded value
// extract coded value
#define UNFOLD(x) (((x)&1) ? (++(x)>>1) : (-(x)>>1))
*p = UNFOLD(value);
*p = UNFOLD(value);
// run hybrid filter
ttafilter_process(filter, p, 0);
// run hybrid filter
ttafilter_process(filter, p, 0);
// fixed order prediction
// fixed order prediction
#define PRED(x, k) (int32_t)((((uint64_t)x << k) - x) >> k)
switch (s->bps) {
case 1: *p += PRED(*predictor, 4); break;
case 2:
case 3: *p += PRED(*predictor, 5); break;
case 4: *p += *predictor; break;
}
*predictor = *p;
// flip channels
if (cur_chan < (s->channels-1))
cur_chan++;
else {
// decorrelate in case of stereo integer
if (s->channels > 1) {
int32_t *r = p - 1;
for (*p += *r / 2; r > p - s->channels; r--)
*r = *(r + 1) - *r;
}
cur_chan = 0;
switch (s->bps) {
case 1: *p += PRED(*predictor, 4); break;
case 2:
case 3: *p += PRED(*predictor, 5); break;
case 4: *p += *predictor; break;
}
*predictor = *p;
// flip channels
if (cur_chan < (s->channels-1))
cur_chan++;
else {
// decorrelate in case of stereo integer
if (s->channels > 1) {
int32_t *r = p - 1;
for (*p += *r / 2; r > p - s->channels; r--)
*r = *(r + 1) - *r;
}
cur_chan = 0;
}
}
if (get_bits_left(&s->gb) < 32)
return -1;
skip_bits(&s->gb, 32); // frame crc
// convert to output buffer
switch(s->bps) {
case 2: {
uint16_t *samples = data;
for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
*samples++ = *p;
}
*data_size = (uint8_t *)samples - (uint8_t *)data;
break;
if (get_bits_left(&s->gb) < 32)
return -1;
skip_bits(&s->gb, 32); // frame crc
// convert to output buffer
switch(s->bps) {
case 2: {
uint16_t *samples = data;
for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
*samples++ = *p;
}
default:
av_log(s->avctx, AV_LOG_ERROR, "Error, only 16bit samples supported!\n");
*data_size = (uint8_t *)samples - (uint8_t *)data;
break;
}
default:
av_log(s->avctx, AV_LOG_ERROR, "Error, only 16bit samples supported!\n");
}
return buf_size;
}
......
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