static float get_float(BitstreamContext *bc)
{
int power = bitstream_read(bc, 5);
float f = ldexpf(bitstream_read(bc, 23), power - 23);
if (bitstream_read_bit(bc))
f = -f;
return f;
}
enum huffman_error huffman_import_tree_rle(struct huffman_decoder* decoder, struct bitstream* bitbuf)
{
enum huffman_error error;
/* bits per entry depends on the maxbits */
int numbits;
int curnode;
if (decoder->maxbits >= 16)
numbits = 5;
else if (decoder->maxbits >= 8)
numbits = 4;
else
numbits = 3;
/* loop until we read all the nodes */
for (curnode = 0; curnode < decoder->numcodes; )
{
/* a non-one value is just raw */
int nodebits = bitstream_read(bitbuf, numbits);
if (nodebits != 1)
decoder->huffnode[curnode++].numbits = nodebits;
/* a one value is an escape code */
else
{
/* a double 1 is just a single 1 */
nodebits = bitstream_read(bitbuf, numbits);
if (nodebits == 1)
decoder->huffnode[curnode++].numbits = nodebits;
/* otherwise, we need one for value for the repeat count */
else
{
int repcount = bitstream_read(bitbuf, numbits) + 3;
while (repcount--)
decoder->huffnode[curnode++].numbits = nodebits;
}
}
}
/* make sure we ended up with the right number */
if (curnode != decoder->numcodes)
return HUFFERR_INVALID_DATA;
/* assign canonical codes for all nodes based on their code lengths */
error = huffman_assign_canonical_codes(decoder);
if (error != HUFFERR_NONE)
return error;
/* build the lookup table */
huffman_build_lookup_table(decoder);
/* determine final input length and report errors */
return bitstream_overflow(bitbuf) ? HUFFERR_INPUT_BUFFER_TOO_SMALL : HUFFERR_NONE;
}
static void do_output_subblock(RA144Context *ractx, const uint16_t *lpc_coefs,
int gval, BitstreamContext *bc)
{
int cba_idx = bitstream_read(bc, 7); // index of the adaptive CB, 0 if none
int gain = bitstream_read(bc, 8);
int cb1_idx = bitstream_read(bc, 7);
int cb2_idx = bitstream_read(bc, 7);
ff_subblock_synthesis(ractx, lpc_coefs, cba_idx, cb1_idx, cb2_idx, gval,
gain);
}
ssize_t
th_unlzss(
thtk_io_t* input,
thtk_io_t* output,
size_t output_size,
thtk_error_t** error)
{
unsigned char dict[LZSS_DICTSIZE];
unsigned int dict_head = 1;
unsigned int i;
size_t bytes_written = 0;
struct bitstream bs;
if (!input || !output) {
thtk_error_new(error, "input or output is NULL");
return -1;
}
bitstream_init(&bs, input);
memset(dict, 0, sizeof(dict));
while (bytes_written < output_size) {
if (bitstream_read1(&bs)) {
unsigned char c = bitstream_read(&bs, 8);
if (thtk_io_write(output, &c, 1, error) != 1)
return -1;
++bytes_written;
dict[dict_head] = c;
dict_head = (dict_head + 1) & LZSS_DICTSIZE_MASK;
} else {
unsigned int match_offset = bitstream_read(&bs, 13);
unsigned int match_len = bitstream_read(&bs, 4) + LZSS_MIN_MATCH;
if (!match_offset)
return bytes_written;
for (i = 0; i < match_len; ++i) {
unsigned char c = dict[(match_offset + i) & LZSS_DICTSIZE_MASK];
if (thtk_io_write(output, &c, 1, error) != 1)
return -1;
++bytes_written;
dict[dict_head] = c;
dict_head = (dict_head + 1) & LZSS_DICTSIZE_MASK;
}
}
}
return bytes_written;
}
int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, BitstreamContext *bc,
int width, const char *name, uint32_t *write_to,
uint32_t range_min, uint32_t range_max)
{
uint32_t value;
int position;
av_assert0(width <= 32);
if (bitstream_bits_left(bc) < width) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid value at "
"%s: bitstream ended.\n", name);
return AVERROR_INVALIDDATA;
}
if (ctx->trace_enable)
position = bitstream_tell(bc);
value = bitstream_read(bc, width);
if (ctx->trace_enable) {
char bits[33];
int i;
for (i = 0; i < width; i++)
bits[i] = value >> (width - i - 1) & 1 ? '1' : '0';
bits[i] = 0;
ff_cbs_trace_syntax_element(ctx, position, name, bits, value);
}
int lzw_decompress(lzw_t *lzw, read_func_t src_r,
write_func_t dst_w, void *ctx)
{
bitstream_t bs_r;
bitstream_init_r(&bs_r, src_r, ctx);
uint8_t init_code_len;
src_r(ctx, &init_code_len, 1);
if (init_code_len>=32)
return 1;
lzw->code_len = init_code_len;
lzw_resize_dict(lzw);
int prev = -1;
int done = 0;
while (1)
{
int code = 0;
for (int i = 0; i < lzw->code_len; i++)
{
int bit = bitstream_read(&bs_r);
if (bit==-1)
{
done = 1;
break;
}
code |= bit << i;
}
if (done)
break;
if (code==256)
{
lzw->code_len = init_code_len;
lzw_resize_dict(lzw);
}
// put dict[prev]+'c' into the dictionary
if (prev>=0)
{
lzw_dict_entry_t *di = &lzw->dict[lzw->dict_i];
di->size = lzw->dict[prev].size+1;
di->data = malloc(di->size);
uint8_t chr = lzw->dict[code==lzw->dict_i ? prev : code].data[0];
memcpy(di->data, lzw->dict[prev].data, lzw->dict[prev].size);
di->data[di->size-1] = chr;
lzw->dict_i++;
if (lzw->dict_i==(1 << lzw->code_len))
{
lzw->code_len++;
lzw_resize_dict(lzw);
}
}
if (code >= lzw->dict_size)
return 1; // no entry for this code
dst_w(ctx, lzw->dict[code].data, lzw->dict[code].size);
prev = code;
}
return 0;
}
static int parse_fmtp_config(AVStream *st, const char *value)
{
int len = ff_hex_to_data(NULL, value), i, ret = 0;
BitstreamContext bc;
uint8_t *config;
int audio_mux_version, same_time_framing, num_programs, num_layers;
/* Pad this buffer, too, to avoid out of bounds reads with get_bits below */
config = av_mallocz(len + AV_INPUT_BUFFER_PADDING_SIZE);
if (!config)
return AVERROR(ENOMEM);
ff_hex_to_data(config, value);
bitstream_init8(&bc, config, len);
audio_mux_version = bitstream_read(&bc, 1);
same_time_framing = bitstream_read(&bc, 1);
bitstream_skip(&bc, 6); /* num_sub_frames */
num_programs = bitstream_read(&bc, 4);
num_layers = bitstream_read(&bc, 3);
if (audio_mux_version != 0 || same_time_framing != 1 || num_programs != 0 ||
num_layers != 0) {
avpriv_report_missing_feature(NULL, "LATM config (%d,%d,%d,%d)",
audio_mux_version, same_time_framing,
num_programs, num_layers);
ret = AVERROR_PATCHWELCOME;
goto end;
}
av_freep(&st->codecpar->extradata);
st->codecpar->extradata_size = (bitstream_bits_left(&bc) + 7) / 8;
st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size +
AV_INPUT_BUFFER_PADDING_SIZE);
if (!st->codecpar->extradata) {
ret = AVERROR(ENOMEM);
goto end;
}
for (i = 0; i < st->codecpar->extradata_size; i++)
st->codecpar->extradata[i] = bitstream_read(&bc, 8);
end:
av_free(config);
return ret;
}
static int decode_skip_count(BitstreamContext *bc)
{
int value;
value = bitstream_read_bit(bc);
if (value)
return 0;
value = bitstream_read(bc, 3);
if (value)
return value;
value = bitstream_read(bc, 8);
if (value)
return value + 7;
value = bitstream_read(bc, 15);
if (value)
return value + 262;
return -1;
}
static int gsm_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
AVFrame *frame = data;
int res;
BitstreamContext bc;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int16_t *samples;
if (buf_size < avctx->block_align) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
return AVERROR_INVALIDDATA;
}
/* get output buffer */
frame->nb_samples = avctx->frame_size;
if ((res = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return res;
}
samples = (int16_t *)frame->data[0];
switch (avctx->codec_id) {
case AV_CODEC_ID_GSM:
bitstream_init(&bc, buf, buf_size * 8);
if (bitstream_read(&bc, 4) != 0xd)
av_log(avctx, AV_LOG_WARNING, "Missing GSM magic!\n");
res = gsm_decode_block(avctx, samples, &bc, GSM_13000);
if (res < 0)
return res;
break;
case AV_CODEC_ID_GSM_MS:
res = ff_msgsm_decode_block(avctx, samples, buf,
(GSM_MS_BLOCK_SIZE - avctx->block_align) / 3);
if (res < 0)
return res;
}
*got_frame_ptr = 1;
return avctx->block_align;
}
/**
* Decode Bink Audio block
* @param[out] out Output buffer (must contain s->block_size elements)
* @return 0 on success, negative error code on failure
*/
static int decode_block(BinkAudioContext *s, float **out, int use_dct)
{
int ch, i, j, k;
float q, quant[25];
int width, coeff;
BitstreamContext *bc = &s->bc;
if (use_dct)
bitstream_skip(bc, 2);
for (ch = 0; ch < s->channels; ch++) {
FFTSample *coeffs = out[ch];
if (s->version_b) {
if (bitstream_bits_left(bc) < 64)
return AVERROR_INVALIDDATA;
coeffs[0] = av_int2float(bitstream_read(bc, 32)) * s->root;
coeffs[1] = av_int2float(bitstream_read(bc, 32)) * s->root;
} else {
if (bitstream_bits_left(bc) < 58)
return AVERROR_INVALIDDATA;
coeffs[0] = get_float(bc) * s->root;
coeffs[1] = get_float(bc) * s->root;
}
if (bitstream_bits_left(bc) < s->num_bands * 8)
return AVERROR_INVALIDDATA;
for (i = 0; i < s->num_bands; i++) {
int value = bitstream_read(bc, 8);
quant[i] = quant_table[FFMIN(value, 95)];
}
k = 0;
q = quant[0];
// parse coefficients
i = 2;
while (i < s->frame_len) {
if (s->version_b) {
j = i + 16;
} else {
int v = bitstream_read_bit(bc);
if (v) {
v = bitstream_read(bc, 4);
j = i + rle_length_tab[v] * 8;
} else {
j = i + 8;
}
}
j = FFMIN(j, s->frame_len);
width = bitstream_read(bc, 4);
if (width == 0) {
memset(coeffs + i, 0, (j - i) * sizeof(*coeffs));
i = j;
while (s->bands[k] < i)
q = quant[k++];
} else {
while (i < j) {
if (s->bands[k] == i)
q = quant[k++];
coeff = bitstream_read(bc, width);
if (coeff) {
int v;
v = bitstream_read_bit(bc);
if (v)
coeffs[i] = -q * coeff;
else
coeffs[i] = q * coeff;
} else {
coeffs[i] = 0.0f;
}
i++;
}
}
}
if (CONFIG_BINKAUDIO_DCT_DECODER && use_dct) {
coeffs[0] /= 0.5;
s->trans.dct.dct_calc(&s->trans.dct, coeffs);
}
else if (CONFIG_BINKAUDIO_RDFT_DECODER)
s->trans.rdft.rdft_calc(&s->trans.rdft, coeffs);
}
for (ch = 0; ch < s->channels; ch++) {
int j;
int count = s->overlap_len * s->channels;
if (!s->first) {
j = ch;
for (i = 0; i < s->overlap_len; i++, j += s->channels)
out[ch][i] = (s->previous[ch][i] * (count - j) +
out[ch][i] * j) / count;
}
memcpy(s->previous[ch], &out[ch][s->frame_len - s->overlap_len],
s->overlap_len * sizeof(*s->previous[ch]));
}
s->first = 0;
return 0;
}
static int escape130_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
Escape130Context *s = avctx->priv_data;
AVFrame *pic = data;
BitstreamContext bc;
int ret;
uint8_t *old_y, *old_cb, *old_cr,
*new_y, *new_cb, *new_cr;
uint8_t *dstY, *dstU, *dstV;
unsigned old_y_stride, old_cb_stride, old_cr_stride,
new_y_stride, new_cb_stride, new_cr_stride;
unsigned total_blocks = avctx->width * avctx->height / 4,
block_index, block_x = 0;
unsigned y[4] = { 0 }, cb = 0x10, cr = 0x10;
int skip = -1, y_avg = 0, i, j;
uint8_t *ya = s->old_y_avg;
// first 16 bytes are header; no useful information in here
if (buf_size <= 16) {
av_log(avctx, AV_LOG_ERROR, "Insufficient frame data\n");
return AVERROR_INVALIDDATA;
}
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
bitstream_init(&bc, buf + 16, (buf_size - 16) * 8);
new_y = s->new_y;
new_cb = s->new_u;
new_cr = s->new_v;
new_y_stride = s->linesize[0];
new_cb_stride = s->linesize[1];
new_cr_stride = s->linesize[2];
old_y = s->old_y;
old_cb = s->old_u;
old_cr = s->old_v;
old_y_stride = s->linesize[0];
old_cb_stride = s->linesize[1];
old_cr_stride = s->linesize[2];
for (block_index = 0; block_index < total_blocks; block_index++) {
// Note that this call will make us skip the rest of the blocks
// if the frame ends prematurely.
if (skip == -1)
skip = decode_skip_count(&bc);
if (skip == -1) {
av_log(avctx, AV_LOG_ERROR, "Error decoding skip value\n");
return AVERROR_INVALIDDATA;
}
if (skip) {
y[0] = old_y[0];
y[1] = old_y[1];
y[2] = old_y[old_y_stride];
y[3] = old_y[old_y_stride + 1];
y_avg = ya[0];
cb = old_cb[0];
cr = old_cr[0];
} else {
if (bitstream_read_bit(&bc)) {
unsigned sign_selector = bitstream_read(&bc, 6);
unsigned difference_selector = bitstream_read(&bc, 2);
y_avg = 2 * bitstream_read(&bc, 5);
for (i = 0; i < 4; i++) {
y[i] = av_clip(y_avg + offset_table[difference_selector] *
sign_table[sign_selector][i], 0, 63);
}
} else if (bitstream_read_bit(&bc)) {
if (bitstream_read_bit(&bc)) {
y_avg = bitstream_read(&bc, 6);
} else {
unsigned adjust_index = bitstream_read(&bc, 3);
y_avg = (y_avg + luma_adjust[adjust_index]) & 63;
}
for (i = 0; i < 4; i++)
y[i] = y_avg;
}
if (bitstream_read_bit(&bc)) {
if (bitstream_read_bit(&bc)) {
cb = bitstream_read(&bc, 5);
cr = bitstream_read(&bc, 5);
} else {
unsigned adjust_index = bitstream_read(&bc, 3);
cb = (cb + chroma_adjust[0][adjust_index]) & 31;
cr = (cr + chroma_adjust[1][adjust_index]) & 31;
}
}
}
*ya++ = y_avg;
new_y[0] = y[0];
new_y[1] = y[1];
new_y[new_y_stride] = y[2];
new_y[new_y_stride + 1] = y[3];
*new_cb = cb;
*new_cr = cr;
old_y += 2;
old_cb++;
old_cr++;
new_y += 2;
new_cb++;
new_cr++;
block_x++;
if (block_x * 2 == avctx->width) {
block_x = 0;
old_y += old_y_stride * 2 - avctx->width;
old_cb += old_cb_stride - avctx->width / 2;
old_cr += old_cr_stride - avctx->width / 2;
new_y += new_y_stride * 2 - avctx->width;
new_cb += new_cb_stride - avctx->width / 2;
new_cr += new_cr_stride - avctx->width / 2;
}
skip--;
}
new_y = s->new_y;
new_cb = s->new_u;
new_cr = s->new_v;
dstY = pic->data[0];
dstU = pic->data[1];
dstV = pic->data[2];
for (j = 0; j < avctx->height; j++) {
for (i = 0; i < avctx->width; i++)
dstY[i] = new_y[i] << 2;
dstY += pic->linesize[0];
new_y += new_y_stride;
}
for (j = 0; j < avctx->height / 2; j++) {
for (i = 0; i < avctx->width / 2; i++) {
dstU[i] = chroma_vals[new_cb[i]];
dstV[i] = chroma_vals[new_cr[i]];
}
dstU += pic->linesize[1];
dstV += pic->linesize[2];
new_cb += new_cb_stride;
new_cr += new_cr_stride;
}
ff_dlog(avctx, "Frame data: provided %d bytes, used %d bytes\n",
buf_size, bitstream_tell(&bc) >> 3);
FFSWAP(uint8_t*, s->old_y, s->new_y);
FFSWAP(uint8_t*, s->old_u, s->new_u);
FFSWAP(uint8_t*, s->old_v, s->new_v);
*got_frame = 1;
return buf_size;
}
/** Uncompress one block (20 bytes -> 160*2 bytes). */
static int ra144_decode_frame(AVCodecContext * avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
static const uint8_t sizes[LPC_ORDER] = {6, 5, 5, 4, 4, 3, 3, 3, 3, 2};
unsigned int refl_rms[NBLOCKS]; // RMS of the reflection coefficients
uint16_t block_coefs[NBLOCKS][LPC_ORDER]; // LPC coefficients of each sub-block
unsigned int lpc_refl[LPC_ORDER]; // LPC reflection coefficients of the frame
int i, j;
int ret;
int16_t *samples;
unsigned int energy;
RA144Context *ractx = avctx->priv_data;
BitstreamContext bc;
if (buf_size < FRAMESIZE) {
av_log(avctx, AV_LOG_ERROR,
"Frame too small (%d bytes). Truncated file?\n", buf_size);
*got_frame_ptr = 0;
return AVERROR_INVALIDDATA;
}
/* get output buffer */
frame->nb_samples = NBLOCKS * BLOCKSIZE;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
samples = (int16_t *)frame->data[0];
bitstream_init8(&bc, buf, FRAMESIZE);
for (i = 0; i < LPC_ORDER; i++)
lpc_refl[i] = ff_lpc_refl_cb[i][bitstream_read(&bc, sizes[i])];
ff_eval_coefs(ractx->lpc_coef[0], lpc_refl);
ractx->lpc_refl_rms[0] = ff_rms(lpc_refl);
energy = ff_energy_tab[bitstream_read(&bc, 5)];
refl_rms[0] = ff_interp(ractx, block_coefs[0], 1, 1, ractx->old_energy);
refl_rms[1] = ff_interp(ractx, block_coefs[1], 2,
energy <= ractx->old_energy,
ff_t_sqrt(energy*ractx->old_energy) >> 12);
refl_rms[2] = ff_interp(ractx, block_coefs[2], 3, 0, energy);
refl_rms[3] = ff_rescale_rms(ractx->lpc_refl_rms[0], energy);
ff_int_to_int16(block_coefs[3], ractx->lpc_coef[0]);
for (i=0; i < NBLOCKS; i++) {
do_output_subblock(ractx, block_coefs[i], refl_rms[i], &bc);
for (j=0; j < BLOCKSIZE; j++)
*samples++ = av_clip_int16(ractx->curr_sblock[j + 10] << 2);
}
ractx->old_energy = energy;
ractx->lpc_refl_rms[1] = ractx->lpc_refl_rms[0];
FFSWAP(unsigned int *, ractx->lpc_coef[0], ractx->lpc_coef[1]);
*got_frame_ptr = 1;
return FRAMESIZE;
}
enum huffman_error huffman_import_tree_huffman(struct huffman_decoder* decoder, struct bitstream* bitbuf)
{
int last = 0;
int curcode;
uint32_t temp;
enum huffman_error error;
uint8_t rlefullbits = 0;
int index, count = 0;
int start;
/* start by parsing the lengths for the small tree */
struct huffman_decoder* smallhuff = create_huffman_decoder(24, 6);
smallhuff->huffnode[0].numbits = bitstream_read(bitbuf, 3);
start = bitstream_read(bitbuf, 3) + 1;
for (index = 1; index < 24; index++)
{
if (index < start || count == 7)
smallhuff->huffnode[index].numbits = 0;
else
{
count = bitstream_read(bitbuf, 3);
smallhuff->huffnode[index].numbits = (count == 7) ? 0 : count;
}
}
/* then regenerate the tree */
error = huffman_assign_canonical_codes(smallhuff);
if (error != HUFFERR_NONE)
return error;
huffman_build_lookup_table(smallhuff);
/* determine the maximum length of an RLE count */
temp = decoder->numcodes - 9;
while (temp != 0)
temp >>= 1, rlefullbits++;
/* now process the rest of the data */
for (curcode = 0; curcode < decoder->numcodes; )
{
int value = huffman_decode_one(smallhuff, bitbuf);
if (value != 0)
decoder->huffnode[curcode++].numbits = last = value - 1;
else
{
int count = bitstream_read(bitbuf, 3) + 2;
if (count == 7+2)
count += bitstream_read(bitbuf, rlefullbits);
for ( ; count != 0 && curcode < decoder->numcodes; count--)
decoder->huffnode[curcode++].numbits = last;
}
}
/* make sure we ended up with the right number */
if (curcode != decoder->numcodes)
return HUFFERR_INVALID_DATA;
/* assign canonical codes for all nodes based on their code lengths */
error = huffman_assign_canonical_codes(decoder);
if (error != HUFFERR_NONE)
return error;
/* build the lookup table */
huffman_build_lookup_table(decoder);
/* determine final input length and report errors */
return bitstream_overflow(bitbuf) ? HUFFERR_INPUT_BUFFER_TOO_SMALL : HUFFERR_NONE;
}
static int atrac3p_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
ATRAC3PContext *ctx = avctx->priv_data;
AVFrame *frame = data;
int i, ret, ch_unit_id, ch_block = 0, out_ch_index = 0, channels_to_process;
float **samples_p = (float **)frame->extended_data;
frame->nb_samples = ATRAC3P_FRAME_SAMPLES;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
if ((ret = bitstream_init8(&ctx->bc, avpkt->data, avpkt->size)) < 0)
return ret;
if (bitstream_read_bit(&ctx->bc)) {
av_log(avctx, AV_LOG_ERROR, "Invalid start bit!\n");
return AVERROR_INVALIDDATA;
}
while (bitstream_bits_left(&ctx->bc) >= 2 &&
(ch_unit_id = bitstream_read(&ctx->bc, 2)) != CH_UNIT_TERMINATOR) {
if (ch_unit_id == CH_UNIT_EXTENSION) {
avpriv_report_missing_feature(avctx, "Channel unit extension");
return AVERROR_PATCHWELCOME;
}
if (ch_block >= ctx->num_channel_blocks ||
ctx->channel_blocks[ch_block] != ch_unit_id) {
av_log(avctx, AV_LOG_ERROR,
"Frame data doesn't match channel configuration!\n");
return AVERROR_INVALIDDATA;
}
ctx->ch_units[ch_block].unit_type = ch_unit_id;
channels_to_process = ch_unit_id + 1;
if ((ret = ff_atrac3p_decode_channel_unit(&ctx->bc,
&ctx->ch_units[ch_block],
channels_to_process,
avctx)) < 0)
return ret;
decode_residual_spectrum(&ctx->ch_units[ch_block], ctx->samples,
channels_to_process, avctx);
reconstruct_frame(ctx, &ctx->ch_units[ch_block],
channels_to_process, avctx);
for (i = 0; i < channels_to_process; i++)
memcpy(samples_p[out_ch_index + i], ctx->outp_buf[i],
ATRAC3P_FRAME_SAMPLES * sizeof(**samples_p));
ch_block++;
out_ch_index += channels_to_process;
}
*got_frame_ptr = 1;
return avctx->block_align;
}