static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
SmackVContext * const smk = avctx->priv_data;
uint8_t *out;
uint32_t *pal;
GetBitContext gb;
int blocks, blk, bw, bh;
int i;
int stride;
if(buf_size <= 769)
return 0;
smk->pic.reference = 3;
smk->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
if(avctx->reget_buffer(avctx, &smk->pic) < 0){
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
/* make the palette available on the way out */
pal = (uint32_t*)smk->pic.data[1];
smk->pic.palette_has_changed = buf[0] & 1;
smk->pic.key_frame = !!(buf[0] & 2);
if(smk->pic.key_frame)
smk->pic.pict_type = AV_PICTURE_TYPE_I;
else
smk->pic.pict_type = AV_PICTURE_TYPE_P;
buf++;
for(i = 0; i < 256; i++)
*pal++ = 0xFF << 24 | bytestream_get_be24(&buf);
buf_size -= 769;
last_reset(smk->mmap_tbl, smk->mmap_last);
last_reset(smk->mclr_tbl, smk->mclr_last);
last_reset(smk->full_tbl, smk->full_last);
last_reset(smk->type_tbl, smk->type_last);
init_get_bits(&gb, buf, buf_size * 8);
blk = 0;
bw = avctx->width >> 2;
bh = avctx->height >> 2;
blocks = bw * bh;
out = smk->pic.data[0];
stride = smk->pic.linesize[0];
while(blk < blocks) {
int type, run, mode;
uint16_t pix;
type = smk_get_code(&gb, smk->type_tbl, smk->type_last);
run = block_runs[(type >> 2) & 0x3F];
switch(type & 3){
case SMK_BLK_MONO:
while(run-- && blk < blocks){
int clr, map;
int hi, lo;
clr = smk_get_code(&gb, smk->mclr_tbl, smk->mclr_last);
map = smk_get_code(&gb, smk->mmap_tbl, smk->mmap_last);
out = smk->pic.data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
hi = clr >> 8;
lo = clr & 0xFF;
for(i = 0; i < 4; i++) {
if(map & 1) out[0] = hi; else out[0] = lo;
if(map & 2) out[1] = hi; else out[1] = lo;
if(map & 4) out[2] = hi; else out[2] = lo;
if(map & 8) out[3] = hi; else out[3] = lo;
map >>= 4;
out += stride;
}
blk++;
}
break;
case SMK_BLK_FULL:
mode = 0;
if(avctx->codec_tag == MKTAG('S', 'M', 'K', '4')) { // In case of Smacker v4 we have three modes
if(get_bits1(&gb)) mode = 1;
else if(get_bits1(&gb)) mode = 2;
}
while(run-- && blk < blocks){
out = smk->pic.data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
switch(mode){
case 0:
for(i = 0; i < 4; i++) {
pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
AV_WL16(out+2,pix);
pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
AV_WL16(out,pix);
out += stride;
}
break;
case 1:
pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
out[0] = out[1] = pix & 0xFF;
out[2] = out[3] = pix >> 8;
out += stride;
out[0] = out[1] = pix & 0xFF;
out[2] = out[3] = pix >> 8;
out += stride;
pix = smk_get_code(&gb, smk->full_tbl, smk->full_last);
out[0] = out[1] = pix & 0xFF;
out[2] = out[3] = pix >> 8;
out += stride;
out[0] = out[1] = pix & 0xFF;
out[2] = out[3] = pix >> 8;
out += stride;
break;
case 2:
for(i = 0; i < 2; i++) {
uint16_t pix1, pix2;
pix2 = smk_get_code(&gb, smk->full_tbl, smk->full_last);
pix1 = smk_get_code(&gb, smk->full_tbl, smk->full_last);
AV_WL16(out,pix1);
AV_WL16(out+2,pix2);
out += stride;
AV_WL16(out,pix1);
AV_WL16(out+2,pix2);
out += stride;
}
break;
}
blk++;
}
break;
case SMK_BLK_SKIP:
while(run-- && blk < blocks)
blk++;
break;
case SMK_BLK_FILL:
mode = type >> 8;
while(run-- && blk < blocks){
uint32_t col;
out = smk->pic.data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
col = mode * 0x01010101;
for(i = 0; i < 4; i++) {
*((uint32_t*)out) = col;
out += stride;
}
blk++;
}
break;
}
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = smk->pic;
/* always report that the buffer was completely consumed */
return buf_size;
}
/**
* Parse the picture segment packet.
*
* The picture segment contains details on the sequence id,
* width, height and Run Length Encoded (RLE) bitmap data.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Enable support for RLE data over multiple packets
*/
static int parse_picture_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
PGSSubContext *ctx = avctx->priv_data;
uint8_t sequence_desc;
unsigned int rle_bitmap_len, width, height;
if (buf_size <= 4)
return -1;
buf_size -= 4;
/* skip 3 unknown bytes: Object ID (2 bytes), Version Number */
buf += 3;
/* Read the Sequence Description to determine if start of RLE data or appended to previous RLE */
sequence_desc = bytestream_get_byte(&buf);
if (!(sequence_desc & 0x80)) {
/* Additional RLE data */
if (buf_size > ctx->picture.rle_remaining_len)
return -1;
memcpy(ctx->picture.rle + ctx->picture.rle_data_len, buf, buf_size);
ctx->picture.rle_data_len += buf_size;
ctx->picture.rle_remaining_len -= buf_size;
return 0;
}
if (buf_size <= 7)
return -1;
buf_size -= 7;
/* Decode rle bitmap length, stored size includes width/height data */
rle_bitmap_len = bytestream_get_be24(&buf) - 2*2;
/* Get bitmap dimensions from data */
width = bytestream_get_be16(&buf);
height = bytestream_get_be16(&buf);
/* Make sure the bitmap is not too large */
if (avctx->width < width || avctx->height < height) {
av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger than video.\n");
return -1;
}
ctx->picture.w = width;
ctx->picture.h = height;
av_fast_malloc(&ctx->picture.rle, &ctx->picture.rle_buffer_size, rle_bitmap_len);
if (!ctx->picture.rle)
return -1;
memcpy(ctx->picture.rle, buf, buf_size);
ctx->picture.rle_data_len = buf_size;
ctx->picture.rle_remaining_len = rle_bitmap_len - buf_size;
return 0;
}
int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
VP56Context *s = avctx->priv_data;
AVFrame *const p = s->framep[VP56_FRAME_CURRENT];
int remaining_buf_size = avpkt->size;
int is_alpha, av_uninit(alpha_offset);
if (s->has_alpha) {
if (remaining_buf_size < 3)
return -1;
alpha_offset = bytestream_get_be24(&buf);
remaining_buf_size -= 3;
if (remaining_buf_size < alpha_offset)
return -1;
}
for (is_alpha=0; is_alpha < 1+s->has_alpha; is_alpha++) {
int mb_row, mb_col, mb_row_flip, mb_offset = 0;
int block, y, uv, stride_y, stride_uv;
int golden_frame = 0;
int res;
s->modelp = &s->models[is_alpha];
res = s->parse_header(s, buf, remaining_buf_size, &golden_frame);
if (!res)
return -1;
if (res == 2) {
int i;
for (i = 0; i < 4; i++) {
if (s->frames[i].data[0])
avctx->release_buffer(avctx, &s->frames[i]);
}
if (is_alpha) {
avcodec_set_dimensions(avctx, 0, 0);
return -1;
}
}
if (!is_alpha) {
p->reference = 1;
if (avctx->get_buffer(avctx, p) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
if (res == 2)
if (vp56_size_changed(avctx)) {
avctx->release_buffer(avctx, p);
return -1;
}
}
if (p->key_frame) {
p->pict_type = AV_PICTURE_TYPE_I;
s->default_models_init(s);
for (block=0; block<s->mb_height*s->mb_width; block++)
s->macroblocks[block].type = VP56_MB_INTRA;
} else {
p->pict_type = AV_PICTURE_TYPE_P;
vp56_parse_mb_type_models(s);
s->parse_vector_models(s);
s->mb_type = VP56_MB_INTER_NOVEC_PF;
}
if (s->parse_coeff_models(s))
goto next;
memset(s->prev_dc, 0, sizeof(s->prev_dc));
s->prev_dc[1][VP56_FRAME_CURRENT] = 128;
s->prev_dc[2][VP56_FRAME_CURRENT] = 128;
for (block=0; block < 4*s->mb_width+6; block++) {
s->above_blocks[block].ref_frame = VP56_FRAME_NONE;
s->above_blocks[block].dc_coeff = 0;
s->above_blocks[block].not_null_dc = 0;
}
s->above_blocks[2*s->mb_width + 2].ref_frame = VP56_FRAME_CURRENT;
s->above_blocks[3*s->mb_width + 4].ref_frame = VP56_FRAME_CURRENT;
stride_y = p->linesize[0];
stride_uv = p->linesize[1];
if (s->flip < 0)
mb_offset = 7;
/* main macroblocks loop */
for (mb_row=0; mb_row<s->mb_height; mb_row++) {
if (s->flip < 0)
mb_row_flip = s->mb_height - mb_row - 1;
else
mb_row_flip = mb_row;
for (block=0; block<4; block++) {
s->left_block[block].ref_frame = VP56_FRAME_NONE;
s->left_block[block].dc_coeff = 0;
s->left_block[block].not_null_dc = 0;
}
memset(s->coeff_ctx, 0, sizeof(s->coeff_ctx));
memset(s->coeff_ctx_last, 24, sizeof(s->coeff_ctx_last));
s->above_block_idx[0] = 1;
s->above_block_idx[1] = 2;
s->above_block_idx[2] = 1;
s->above_block_idx[3] = 2;
s->above_block_idx[4] = 2*s->mb_width + 2 + 1;
s->above_block_idx[5] = 3*s->mb_width + 4 + 1;
s->block_offset[s->frbi] = (mb_row_flip*16 + mb_offset) * stride_y;
s->block_offset[s->srbi] = s->block_offset[s->frbi] + 8*stride_y;
s->block_offset[1] = s->block_offset[0] + 8;
s->block_offset[3] = s->block_offset[2] + 8;
s->block_offset[4] = (mb_row_flip*8 + mb_offset) * stride_uv;
s->block_offset[5] = s->block_offset[4];
for (mb_col=0; mb_col<s->mb_width; mb_col++) {
vp56_decode_mb(s, mb_row, mb_col, is_alpha);
for (y=0; y<4; y++) {
s->above_block_idx[y] += 2;
s->block_offset[y] += 16;
}
for (uv=4; uv<6; uv++) {
s->above_block_idx[uv] += 1;
s->block_offset[uv] += 8;
}
}
}
next:
if (p->key_frame || golden_frame) {
if (s->framep[VP56_FRAME_GOLDEN]->data[0] &&
s->framep[VP56_FRAME_GOLDEN] != s->framep[VP56_FRAME_GOLDEN2])
avctx->release_buffer(avctx, s->framep[VP56_FRAME_GOLDEN]);
s->framep[VP56_FRAME_GOLDEN] = p;
}
if (s->has_alpha) {
FFSWAP(AVFrame *, s->framep[VP56_FRAME_GOLDEN],
s->framep[VP56_FRAME_GOLDEN2]);
buf += alpha_offset;
remaining_buf_size -= alpha_offset;
}
}
static int pcm_bluray_decode_frame(AVCodecContext *avctx,
void *data,
int *data_size,
AVPacket *avpkt)
{
const uint8_t *src = avpkt->data;
int buf_size = avpkt->size;
int num_source_channels, channel, retval;
int sample_size, samples, output_size;
int16_t *dst16 = data;
int32_t *dst32 = data;
if (buf_size < 4) {
av_log(avctx, AV_LOG_ERROR, "PCM packet too small\n");
return -1;
}
if (pcm_bluray_parse_header(avctx, src))
return -1;
src += 4;
buf_size -= 4;
/* There's always an even number of channels in the source */
num_source_channels = FFALIGN(avctx->channels, 2);
sample_size = (num_source_channels * avctx->bits_per_coded_sample) >> 3;
samples = buf_size / sample_size;
output_size = samples * avctx->channels *
(avctx->sample_fmt == AV_SAMPLE_FMT_S32 ? 4 : 2);
if (output_size > *data_size) {
av_log(avctx, AV_LOG_ERROR,
"Insufficient output buffer space (%d bytes, needed %d bytes)\n",
*data_size, output_size);
return -1;
}
*data_size = output_size;
if (samples) {
switch (avctx->channel_layout) {
/* cases with same number of source and coded channels */
case AV_CH_LAYOUT_STEREO:
case AV_CH_LAYOUT_4POINT0:
case AV_CH_LAYOUT_2_2:
samples *= num_source_channels;
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
#if HAVE_BIGENDIAN
memcpy(dst16, src, output_size);
#else
do {
*dst16++ = bytestream_get_be16(&src);
} while (--samples);
#endif
} else {
do {
*dst32++ = bytestream_get_be24(&src) << 8;
} while (--samples);
}
break;
/* cases where number of source channels = coded channels + 1 */
case AV_CH_LAYOUT_MONO:
case AV_CH_LAYOUT_SURROUND:
case AV_CH_LAYOUT_2_1:
case AV_CH_LAYOUT_5POINT0:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
#if HAVE_BIGENDIAN
memcpy(dst16, src, avctx->channels * 2);
dst16 += avctx->channels;
src += sample_size;
#else
channel = avctx->channels;
do {
*dst16++ = bytestream_get_be16(&src);
} while (--channel);
src += 2;
#endif
} while (--samples);
} else {
do {
channel = avctx->channels;
do {
*dst32++ = bytestream_get_be24(&src) << 8;
} while (--channel);
src += 3;
} while (--samples);
}
break;
/* remapping: L, R, C, LBack, RBack, LF */
case AV_CH_LAYOUT_5POINT1:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
dst16[0] = bytestream_get_be16(&src);
dst16[1] = bytestream_get_be16(&src);
dst16[2] = bytestream_get_be16(&src);
dst16[4] = bytestream_get_be16(&src);
dst16[5] = bytestream_get_be16(&src);
dst16[3] = bytestream_get_be16(&src);
dst16 += 6;
} while (--samples);
} else {
do {
dst32[0] = bytestream_get_be24(&src) << 8;
dst32[1] = bytestream_get_be24(&src) << 8;
dst32[2] = bytestream_get_be24(&src) << 8;
dst32[4] = bytestream_get_be24(&src) << 8;
dst32[5] = bytestream_get_be24(&src) << 8;
dst32[3] = bytestream_get_be24(&src) << 8;
dst32 += 6;
} while (--samples);
}
break;
/* remapping: L, R, C, LSide, LBack, RBack, RSide, <unused> */
case AV_CH_LAYOUT_7POINT0:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
dst16[0] = bytestream_get_be16(&src);
dst16[1] = bytestream_get_be16(&src);
dst16[2] = bytestream_get_be16(&src);
dst16[5] = bytestream_get_be16(&src);
dst16[3] = bytestream_get_be16(&src);
dst16[4] = bytestream_get_be16(&src);
dst16[6] = bytestream_get_be16(&src);
dst16 += 7;
src += 2;
} while (--samples);
} else {
do {
dst32[0] = bytestream_get_be24(&src) << 8;
dst32[1] = bytestream_get_be24(&src) << 8;
dst32[2] = bytestream_get_be24(&src) << 8;
dst32[5] = bytestream_get_be24(&src) << 8;
dst32[3] = bytestream_get_be24(&src) << 8;
dst32[4] = bytestream_get_be24(&src) << 8;
dst32[6] = bytestream_get_be24(&src) << 8;
dst32 += 7;
src += 3;
} while (--samples);
}
break;
/* remapping: L, R, C, LSide, LBack, RBack, RSide, LF */
case AV_CH_LAYOUT_7POINT1:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
dst16[0] = bytestream_get_be16(&src);
dst16[1] = bytestream_get_be16(&src);
dst16[2] = bytestream_get_be16(&src);
dst16[6] = bytestream_get_be16(&src);
dst16[4] = bytestream_get_be16(&src);
dst16[5] = bytestream_get_be16(&src);
dst16[7] = bytestream_get_be16(&src);
dst16[3] = bytestream_get_be16(&src);
dst16 += 8;
} while (--samples);
} else {
do {
dst32[0] = bytestream_get_be24(&src) << 8;
dst32[1] = bytestream_get_be24(&src) << 8;
dst32[2] = bytestream_get_be24(&src) << 8;
dst32[6] = bytestream_get_be24(&src) << 8;
dst32[4] = bytestream_get_be24(&src) << 8;
dst32[5] = bytestream_get_be24(&src) << 8;
dst32[7] = bytestream_get_be24(&src) << 8;
dst32[3] = bytestream_get_be24(&src) << 8;
dst32 += 8;
} while (--samples);
}
break;
}
}
retval = src - avpkt->data;
if (avctx->debug & FF_DEBUG_BITSTREAM)
av_dlog(avctx, "pcm_bluray_decode_frame: decoded %d -> %d bytes\n",
retval, *data_size);
return retval;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt) {
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
AVSubtitle *sub = data;
const uint8_t *buf_end = buf + buf_size;
uint8_t *bitmap;
int w, h, x, y, rlelen, i;
int64_t packet_time = 0;
GetBitContext gb;
memset(sub, 0, sizeof(*sub));
// check that at least header fits
if (buf_size < 27 + 7 * 2 + 4 * 3) {
av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
return -1;
}
// read start and end time
if (buf[0] != '[' || buf[13] != '-' || buf[26] != ']') {
av_log(avctx, AV_LOG_ERROR, "invalid time code\n");
return -1;
}
if (avpkt->pts != AV_NOPTS_VALUE)
packet_time = av_rescale_q(avpkt->pts, AV_TIME_BASE_Q, (AVRational){1, 1000});
sub->start_display_time = parse_timecode(buf + 1, packet_time);
sub->end_display_time = parse_timecode(buf + 14, packet_time);
buf += 27;
// read header
w = bytestream_get_le16(&buf);
h = bytestream_get_le16(&buf);
if (avcodec_check_dimensions(avctx, w, h) < 0)
return -1;
x = bytestream_get_le16(&buf);
y = bytestream_get_le16(&buf);
#ifdef SUPPORT_DIVX_DRM
if((video_height - (y+h)) > 30)
{
y = video_height-30-h-1;
}
#endif /* end of SUPPORT_DIVX_DRM */
// skip bottom right position, it gives no new information
bytestream_get_le16(&buf);
bytestream_get_le16(&buf);
rlelen = bytestream_get_le16(&buf);
// allocate sub and set values
sub->rects = av_mallocz(sizeof(*sub->rects));
sub->rects[0] = av_mallocz(sizeof(*sub->rects[0]));
sub->num_rects = 1;
sub->rects[0]->x = x; sub->rects[0]->y = y;
sub->rects[0]->w = w; sub->rects[0]->h = h;
sub->rects[0]->type = SUBTITLE_BITMAP;
sub->rects[0]->pict.linesize[0] = w;
sub->rects[0]->pict.data[0] = av_malloc(w * h);
sub->rects[0]->nb_colors = 4;
sub->rects[0]->pict.data[1] = av_mallocz(AVPALETTE_SIZE);
// read palette
for (i = 0; i < sub->rects[0]->nb_colors; i++)
((uint32_t*)sub->rects[0]->pict.data[1])[i] = bytestream_get_be24(&buf);
// make all except background (first entry) non-transparent
#if 1
if(sub_type == 2) //DXSA
{
for (i = 0; i < sub->rects[0]->nb_colors; i++)
{
if(buf[i])
((uint32_t*)sub->rects[0]->pict.data[1])[i] |= 0xff000000;
}
if(buf[0] == buf[1] && buf[0] == buf[2] && buf[0] == buf[3] && buf[1] == buf[2] && buf[1] == buf[3] && buf[2] == buf[3] && buf[0] < 0xff)
{
transport_float = (float)buf[0] / 256.0;
}
buf += 4;
}
else
{
for (i = 1; i < sub->rects[0]->nb_colors; i++)
((uint32_t*)sub->rects[0]->pict.data[1])[i] |= 0xff000000;
}
#else
for (i = 1; i < sub->rects[0]->nb_colors; i++)
((uint32_t*)sub->rects[0]->pict.data[1])[i] |= 0xff000000;
#endif
// process RLE-compressed data
rlelen = FFMIN(rlelen, buf_end - buf);
init_get_bits(&gb, buf, rlelen * 8);
bitmap = sub->rects[0]->pict.data[0];
for (y = 0; y < h; y++) {
// interlaced: do odd lines
if (y == (h + 1) / 2) bitmap = sub->rects[0]->pict.data[0] + w;
for (x = 0; x < w; ) {
int log2 = ff_log2_tab[show_bits(&gb, 8)];
int run = get_bits(&gb, 14 - 4 * (log2 >> 1));
int color = get_bits(&gb, 2);
run = FFMIN(run, w - x);
// run length 0 means till end of row
if (!run) run = w - x;
memset(bitmap, color, run);
bitmap += run;
x += run;
}
// interlaced, skip every second line
bitmap += w;
align_get_bits(&gb);
}
*data_size = 1;
return buf_size;
}
int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
VP56Context *s = avctx->priv_data;
AVFrame *p = 0;
int remaining_buf_size = avpkt->size;
int av_uninit(alpha_offset);
int i, res;
/* select a current frame from the unused frames */
for (i = 0; i < 4; ++i) {
if (!s->frames[i].data[0]) {
p = &s->frames[i];
break;
}
}
av_assert0(p != 0);
s->framep[VP56_FRAME_CURRENT] = p;
if (s->alpha_context)
s->alpha_context->framep[VP56_FRAME_CURRENT] = p;
if (s->has_alpha) {
if (remaining_buf_size < 3)
return -1;
alpha_offset = bytestream_get_be24(&buf);
remaining_buf_size -= 3;
if (remaining_buf_size < alpha_offset)
return -1;
}
res = s->parse_header(s, buf, remaining_buf_size);
if (!res)
return -1;
if (res == 2) {
for (i = 0; i < 4; i++) {
if (s->frames[i].data[0])
avctx->release_buffer(avctx, &s->frames[i]);
}
}
p->reference = 3;
if (avctx->get_buffer(avctx, p) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
if (res == 2) {
if (vp56_size_changed(s)) {
avctx->release_buffer(avctx, p);
return -1;
}
}
if (s->has_alpha) {
int bak_w = avctx->width;
int bak_h = avctx->height;
int bak_cw = avctx->coded_width;
int bak_ch = avctx->coded_height;
buf += alpha_offset;
remaining_buf_size -= alpha_offset;
res = s->alpha_context->parse_header(s->alpha_context, buf, remaining_buf_size);
if (res != 1) {
if(res==2) {
av_log(avctx, AV_LOG_ERROR, "Alpha reconfiguration\n");
avctx->width = bak_w;
avctx->height = bak_h;
avctx->coded_width = bak_cw;
avctx->coded_height = bak_ch;
}
avctx->release_buffer(avctx, p);
return -1;
}
}
avctx->execute2(avctx, ff_vp56_decode_mbs, 0, 0, s->has_alpha + 1);
/* release frames that aren't in use */
for (i = 0; i < 4; ++i) {
AVFrame *victim = &s->frames[i];
if (!victim->data[0])
continue;
if (victim != s->framep[VP56_FRAME_PREVIOUS] &&
victim != s->framep[VP56_FRAME_GOLDEN] &&
(!s->has_alpha || victim != s->alpha_context->framep[VP56_FRAME_GOLDEN]))
avctx->release_buffer(avctx, victim);
}
p->qstride = 0;
p->qscale_table = s->qscale_table;
p->qscale_type = FF_QSCALE_TYPE_VP56;
*(AVFrame*)data = *p;
*data_size = sizeof(AVFrame);
return avpkt->size;
}
static int pcm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
PCMDecode *s = avctx->priv_data;
int sample_size, c, n;
short *samples;
const uint8_t *src, *src8, *src2[MAX_CHANNELS];
uint8_t *dstu8;
int16_t *dst_int16_t;
int32_t *dst_int32_t;
int64_t *dst_int64_t;
uint16_t *dst_uint16_t;
uint32_t *dst_uint32_t;
samples = data;
src = buf;
if (avctx->sample_fmt!=avctx->codec->sample_fmts[0]) {
av_log(avctx, AV_LOG_ERROR, "invalid sample_fmt\n");
return -1;
}
if(avctx->channels <= 0 || avctx->channels > MAX_CHANNELS){
av_log(avctx, AV_LOG_ERROR, "PCM channels out of bounds\n");
return -1;
}
sample_size = av_get_bits_per_sample(avctx->codec_id)/8;
/* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */
if (CODEC_ID_PCM_DVD == avctx->codec_id)
/* 2 samples are interleaved per block in PCM_DVD */
sample_size = avctx->bits_per_coded_sample * 2 / 8;
n = avctx->channels * sample_size;
if(n && buf_size % n){
if (buf_size < n) {
av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");
return -1;
}else
buf_size -= buf_size % n;
}
buf_size= FFMIN(buf_size, *data_size/2);
*data_size=0;
n = buf_size/sample_size;
switch(avctx->codec->id) {
case CODEC_ID_PCM_U32LE:
DECODE(uint32_t, le32, src, samples, n, 0, 0x80000000)
break;
case CODEC_ID_PCM_U32BE:
DECODE(uint32_t, be32, src, samples, n, 0, 0x80000000)
break;
case CODEC_ID_PCM_S24LE:
DECODE(int32_t, le24, src, samples, n, 8, 0)
break;
case CODEC_ID_PCM_S24BE:
DECODE(int32_t, be24, src, samples, n, 8, 0)
break;
case CODEC_ID_PCM_U24LE:
DECODE(uint32_t, le24, src, samples, n, 8, 0x800000)
break;
case CODEC_ID_PCM_U24BE:
DECODE(uint32_t, be24, src, samples, n, 8, 0x800000)
break;
case CODEC_ID_PCM_S24DAUD:
for(;n>0;n--) {
uint32_t v = bytestream_get_be24(&src);
v >>= 4; // sync flags are here
*samples++ = av_reverse[(v >> 8) & 0xff] +
(av_reverse[v & 0xff] << 8);
}
break;
case CODEC_ID_PCM_S16LE_PLANAR:
n /= avctx->channels;
for(c=0;c<avctx->channels;c++)
src2[c] = &src[c*n*2];
for(;n>0;n--)
for(c=0;c<avctx->channels;c++)
*samples++ = bytestream_get_le16(&src2[c]);
src = src2[avctx->channels-1];
break;
case CODEC_ID_PCM_U16LE:
DECODE(uint16_t, le16, src, samples, n, 0, 0x8000)
break;
case CODEC_ID_PCM_U16BE:
DECODE(uint16_t, be16, src, samples, n, 0, 0x8000)
break;
case CODEC_ID_PCM_S8:
dstu8= (uint8_t*)samples;
for(;n>0;n--) {
*dstu8++ = *src++ + 128;
}
samples= (short*)dstu8;
break;
#if HAVE_BIGENDIAN
case CODEC_ID_PCM_F64LE:
DECODE(int64_t, le64, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_F32LE:
DECODE(int32_t, le32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16LE:
DECODE(int16_t, le16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F64BE:
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S16BE:
#else
case CODEC_ID_PCM_F64BE:
DECODE(int64_t, be64, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
DECODE(int32_t, be32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16BE:
DECODE(int16_t, be16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F64LE:
case CODEC_ID_PCM_F32LE:
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S16LE:
#endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8:
memcpy(samples, src, n*sample_size);
src += n*sample_size;
samples = (short*)((uint8_t*)data + n*sample_size);
break;
case CODEC_ID_PCM_ZORK:
for(;n>0;n--) {
int x= *src++;
if(x&128) x-= 128;
else x = -x;
*samples++ = x << 8;
}
break;
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_MULAW:
for(;n>0;n--) {
*samples++ = s->table[*src++];
}
break;
case CODEC_ID_PCM_DVD:
dst_int32_t = data;
n /= avctx->channels;
switch (avctx->bits_per_coded_sample) {
case 16:
while (n--) {
c = avctx->channels;
while (c--)
*dst_int32_t++ = bytestream_get_be16(&src) << 16;
}
break;
case 20:
while (n--) {
c = avctx->channels;
src8 = src + 4*c;
while (c--) {
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8 &0xf0) << 8);
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++ &0x0f) << 12);
}
src = src8;
}
break;
case 24:
while (n--) {
c = avctx->channels;
src8 = src + 4*c;
while (c--) {
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);
}
src = src8;
}
break;
default:
av_log(avctx, AV_LOG_ERROR,
"PCM DVD unsupported sample depth %i\n",
avctx->bits_per_coded_sample);
return -1;
break;
}
samples = (short *) dst_int32_t;
break;
default:
return -1;
}
*data_size = (uint8_t *)samples - (uint8_t *)data;
return src - buf;
}
