mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-27 01:42:20 +00:00
594 lines
19 KiB
C
594 lines
19 KiB
C
/*
|
|
* Copyright (c) 2010-2011 Maxim Poliakovski
|
|
* Copyright (c) 2010-2011 Elvis Presley
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy), 'ap4h' (4444)
|
|
*/
|
|
|
|
//#define DEBUG
|
|
|
|
#define A32_BITSTREAM_READER
|
|
|
|
#include "avcodec.h"
|
|
#include "get_bits.h"
|
|
#include "simple_idct.h"
|
|
#include "proresdec.h"
|
|
|
|
static void permute(uint8_t *dst, const uint8_t *src, const uint8_t permutation[64])
|
|
{
|
|
int i;
|
|
for (i = 0; i < 64; i++)
|
|
dst[i] = permutation[src[i]];
|
|
}
|
|
|
|
static const uint8_t progressive_scan[64] = {
|
|
0, 1, 8, 9, 2, 3, 10, 11,
|
|
16, 17, 24, 25, 18, 19, 26, 27,
|
|
4, 5, 12, 20, 13, 6, 7, 14,
|
|
21, 28, 29, 22, 15, 23, 30, 31,
|
|
32, 33, 40, 48, 41, 34, 35, 42,
|
|
49, 56, 57, 50, 43, 36, 37, 44,
|
|
51, 58, 59, 52, 45, 38, 39, 46,
|
|
53, 60, 61, 54, 47, 55, 62, 63
|
|
};
|
|
|
|
static const uint8_t interlaced_scan[64] = {
|
|
0, 8, 1, 9, 16, 24, 17, 25,
|
|
2, 10, 3, 11, 18, 26, 19, 27,
|
|
32, 40, 33, 34, 41, 48, 56, 49,
|
|
42, 35, 43, 50, 57, 58, 51, 59,
|
|
4, 12, 5, 6, 13, 20, 28, 21,
|
|
14, 7, 15, 22, 29, 36, 44, 37,
|
|
30, 23, 31, 38, 45, 52, 60, 53,
|
|
46, 39, 47, 54, 61, 62, 55, 63,
|
|
};
|
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
uint8_t idct_permutation[64];
|
|
|
|
avctx->bits_per_raw_sample = 10;
|
|
|
|
dsputil_init(&ctx->dsp, avctx);
|
|
ff_proresdsp_init(&ctx->prodsp, avctx);
|
|
|
|
avctx->coded_frame = &ctx->frame;
|
|
ctx->frame.type = FF_I_TYPE;
|
|
ctx->frame.key_frame = 1;
|
|
|
|
ff_init_scantable_permutation(idct_permutation,
|
|
ctx->prodsp.idct_permutation_type);
|
|
|
|
permute(ctx->progressive_scan, progressive_scan, idct_permutation);
|
|
permute(ctx->interlaced_scan, interlaced_scan, idct_permutation);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
|
|
const int data_size, AVCodecContext *avctx)
|
|
{
|
|
int hdr_size, width, height, flags;
|
|
int version;
|
|
const uint8_t *ptr;
|
|
|
|
hdr_size = AV_RB16(buf);
|
|
av_dlog(avctx, "header size %d\n", hdr_size);
|
|
if (hdr_size > data_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
|
|
return -1;
|
|
}
|
|
|
|
version = AV_RB16(buf + 2);
|
|
av_dlog(avctx, "%.4s version %d\n", buf+4, version);
|
|
if (version > 1) {
|
|
av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
|
|
return -1;
|
|
}
|
|
|
|
width = AV_RB16(buf + 8);
|
|
height = AV_RB16(buf + 10);
|
|
if (width != avctx->width || height != avctx->height) {
|
|
av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n",
|
|
avctx->width, avctx->height, width, height);
|
|
return -1;
|
|
}
|
|
|
|
ctx->frame_type = (buf[12] >> 2) & 3;
|
|
|
|
av_dlog(avctx, "frame type %d\n", ctx->frame_type);
|
|
|
|
if (ctx->frame_type == 0) {
|
|
ctx->scan = ctx->progressive_scan; // permuted
|
|
} else {
|
|
ctx->scan = ctx->interlaced_scan; // permuted
|
|
ctx->frame.interlaced_frame = 1;
|
|
ctx->frame.top_field_first = ctx->frame_type == 1;
|
|
}
|
|
|
|
avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? PIX_FMT_YUV444P10 : PIX_FMT_YUV422P10;
|
|
|
|
ptr = buf + 20;
|
|
flags = buf[19];
|
|
av_dlog(avctx, "flags %x\n", flags);
|
|
|
|
if (flags & 2) {
|
|
permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
|
|
ptr += 64;
|
|
} else {
|
|
memset(ctx->qmat_luma, 4, 64);
|
|
}
|
|
|
|
if (flags & 1) {
|
|
permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
|
|
} else {
|
|
memset(ctx->qmat_chroma, 4, 64);
|
|
}
|
|
|
|
return hdr_size;
|
|
}
|
|
|
|
static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
int i, hdr_size, slice_count;
|
|
unsigned pic_data_size;
|
|
int log2_slice_mb_width, log2_slice_mb_height;
|
|
int slice_mb_count, mb_x, mb_y;
|
|
const uint8_t *data_ptr, *index_ptr;
|
|
|
|
hdr_size = buf[0] >> 3;
|
|
if (hdr_size < 8 || hdr_size > buf_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
|
|
return -1;
|
|
}
|
|
|
|
pic_data_size = AV_RB32(buf + 1);
|
|
if (pic_data_size > buf_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
|
|
return -1;
|
|
}
|
|
|
|
log2_slice_mb_width = buf[7] >> 4;
|
|
log2_slice_mb_height = buf[7] & 0xF;
|
|
if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
|
|
av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
|
|
1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
|
|
return -1;
|
|
}
|
|
|
|
ctx->mb_width = (avctx->width + 15) >> 4;
|
|
if (ctx->frame_type)
|
|
ctx->mb_height = (avctx->height + 31) >> 5;
|
|
else
|
|
ctx->mb_height = (avctx->height + 15) >> 4;
|
|
|
|
slice_count = AV_RB16(buf + 5);
|
|
|
|
if (ctx->slice_count != slice_count || !ctx->slices) {
|
|
av_freep(&ctx->slices);
|
|
ctx->slices = av_mallocz(slice_count * sizeof(*ctx->slices));
|
|
if (!ctx->slices)
|
|
return AVERROR(ENOMEM);
|
|
ctx->slice_count = slice_count;
|
|
}
|
|
|
|
if (!slice_count)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (hdr_size + slice_count*2 > buf_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
|
|
return -1;
|
|
}
|
|
|
|
// parse slice information
|
|
index_ptr = buf + hdr_size;
|
|
data_ptr = index_ptr + slice_count*2;
|
|
|
|
slice_mb_count = 1 << log2_slice_mb_width;
|
|
mb_x = 0;
|
|
mb_y = 0;
|
|
|
|
for (i = 0; i < slice_count; i++) {
|
|
SliceContext *slice = &ctx->slices[i];
|
|
|
|
slice->data = data_ptr;
|
|
data_ptr += AV_RB16(index_ptr + i*2);
|
|
|
|
while (ctx->mb_width - mb_x < slice_mb_count)
|
|
slice_mb_count >>= 1;
|
|
|
|
slice->mb_x = mb_x;
|
|
slice->mb_y = mb_y;
|
|
slice->mb_count = slice_mb_count;
|
|
slice->data_size = data_ptr - slice->data;
|
|
|
|
if (slice->data_size < 6) {
|
|
av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
|
|
return -1;
|
|
}
|
|
|
|
mb_x += slice_mb_count;
|
|
if (mb_x == ctx->mb_width) {
|
|
slice_mb_count = 1 << log2_slice_mb_width;
|
|
mb_x = 0;
|
|
mb_y++;
|
|
}
|
|
if (data_ptr > buf + buf_size) {
|
|
av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (mb_x || mb_y != ctx->mb_height) {
|
|
av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
|
|
mb_y, ctx->mb_height);
|
|
return -1;
|
|
}
|
|
|
|
return pic_data_size;
|
|
}
|
|
|
|
#define DECODE_CODEWORD(val, codebook) \
|
|
do { \
|
|
unsigned int rice_order, exp_order, switch_bits; \
|
|
unsigned int q, buf, bits; \
|
|
\
|
|
UPDATE_CACHE(re, gb); \
|
|
buf = GET_CACHE(re, gb); \
|
|
\
|
|
/* number of bits to switch between rice and exp golomb */ \
|
|
switch_bits = codebook & 3; \
|
|
rice_order = codebook >> 5; \
|
|
exp_order = (codebook >> 2) & 7; \
|
|
\
|
|
q = 31 - av_log2(buf); \
|
|
\
|
|
if (q > switch_bits) { /* exp golomb */ \
|
|
bits = exp_order - switch_bits + (q<<1); \
|
|
val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
|
|
((switch_bits + 1) << rice_order); \
|
|
SKIP_BITS(re, gb, bits); \
|
|
} else if (rice_order) { \
|
|
SKIP_BITS(re, gb, q+1); \
|
|
val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
|
|
SKIP_BITS(re, gb, rice_order); \
|
|
} else { \
|
|
val = q; \
|
|
SKIP_BITS(re, gb, q+1); \
|
|
} \
|
|
} while (0); \
|
|
|
|
#define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
|
|
|
|
#define FIRST_DC_CB 0xB8
|
|
|
|
static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
|
|
|
|
static av_always_inline void decode_dc_coeffs(GetBitContext *gb, DCTELEM *out,
|
|
int blocks_per_slice)
|
|
{
|
|
DCTELEM prev_dc;
|
|
int code, i, sign;
|
|
|
|
OPEN_READER(re, gb);
|
|
|
|
DECODE_CODEWORD(code, FIRST_DC_CB);
|
|
prev_dc = TOSIGNED(code);
|
|
out[0] = prev_dc;
|
|
|
|
out += 64; // dc coeff for the next block
|
|
|
|
code = 5;
|
|
sign = 0;
|
|
for (i = 1; i < blocks_per_slice; i++, out += 64) {
|
|
DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6)]);
|
|
if(code) sign ^= -(code & 1);
|
|
else sign = 0;
|
|
prev_dc += (((code + 1) >> 1) ^ sign) - sign;
|
|
out[0] = prev_dc;
|
|
}
|
|
CLOSE_READER(re, gb);
|
|
}
|
|
|
|
// adaptive codebook switching lut according to previous run/level values
|
|
static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
|
|
static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
|
|
|
|
static av_always_inline void decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb,
|
|
DCTELEM *out, int blocks_per_slice)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
int block_mask, sign;
|
|
unsigned pos, run, level;
|
|
int max_coeffs, i, bits_left;
|
|
int log2_block_count = av_log2(blocks_per_slice);
|
|
|
|
OPEN_READER(re, gb);
|
|
|
|
run = 4;
|
|
level = 2;
|
|
|
|
max_coeffs = 64 << log2_block_count;
|
|
block_mask = blocks_per_slice - 1;
|
|
|
|
for (pos = block_mask;;) {
|
|
bits_left = gb->size_in_bits - (((uint8_t*)re_buffer_ptr - gb->buffer)*8 - 32 + re_bit_count);
|
|
if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
|
|
break;
|
|
|
|
DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)]);
|
|
pos += run + 1;
|
|
if (pos >= max_coeffs) {
|
|
av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
|
|
return;
|
|
}
|
|
|
|
DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)]);
|
|
level += 1;
|
|
|
|
i = pos >> log2_block_count;
|
|
|
|
sign = SHOW_SBITS(re, gb, 1);
|
|
SKIP_BITS(re, gb, 1);
|
|
out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
|
|
}
|
|
|
|
CLOSE_READER(re, gb);
|
|
}
|
|
|
|
static void decode_slice_luma(AVCodecContext *avctx, SliceContext *slice,
|
|
uint8_t *dst, int dst_stride,
|
|
const uint8_t *buf, unsigned buf_size,
|
|
const int16_t *qmat)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
LOCAL_ALIGNED_16(DCTELEM, blocks, [8*4*64]);
|
|
DCTELEM *block;
|
|
GetBitContext gb;
|
|
int i, blocks_per_slice = slice->mb_count<<2;
|
|
|
|
for (i = 0; i < blocks_per_slice; i++)
|
|
ctx->dsp.clear_block(blocks+(i<<6));
|
|
|
|
init_get_bits(&gb, buf, buf_size << 3);
|
|
|
|
decode_dc_coeffs(&gb, blocks, blocks_per_slice);
|
|
decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice);
|
|
|
|
block = blocks;
|
|
for (i = 0; i < slice->mb_count; i++) {
|
|
ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
|
|
ctx->prodsp.idct_put(dst+16, dst_stride, block+(1<<6), qmat);
|
|
ctx->prodsp.idct_put(dst+8*dst_stride, dst_stride, block+(2<<6), qmat);
|
|
ctx->prodsp.idct_put(dst+8*dst_stride+16, dst_stride, block+(3<<6), qmat);
|
|
block += 4*64;
|
|
dst += 32;
|
|
}
|
|
}
|
|
|
|
static void decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice,
|
|
uint8_t *dst, int dst_stride,
|
|
const uint8_t *buf, unsigned buf_size,
|
|
const int16_t *qmat, int log2_blocks_per_mb)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
LOCAL_ALIGNED_16(DCTELEM, blocks, [8*4*64]);
|
|
DCTELEM *block;
|
|
GetBitContext gb;
|
|
int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
|
|
|
|
for (i = 0; i < blocks_per_slice; i++)
|
|
ctx->dsp.clear_block(blocks+(i<<6));
|
|
|
|
init_get_bits(&gb, buf, buf_size << 3);
|
|
|
|
decode_dc_coeffs(&gb, blocks, blocks_per_slice);
|
|
decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice);
|
|
|
|
block = blocks;
|
|
for (i = 0; i < slice->mb_count; i++) {
|
|
for (j = 0; j < log2_blocks_per_mb; j++) {
|
|
ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
|
|
ctx->prodsp.idct_put(dst+8*dst_stride, dst_stride, block+(1<<6), qmat);
|
|
block += 2*64;
|
|
dst += 16;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
SliceContext *slice = &ctx->slices[jobnr];
|
|
const uint8_t *buf = slice->data;
|
|
AVFrame *pic = avctx->coded_frame;
|
|
int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
|
|
int luma_stride, chroma_stride;
|
|
int y_data_size, u_data_size, v_data_size;
|
|
uint8_t *dest_y, *dest_u, *dest_v;
|
|
int16_t qmat_luma_scaled[64];
|
|
int16_t qmat_chroma_scaled[64];
|
|
int mb_x_shift;
|
|
|
|
//av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
|
|
// jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
|
|
|
|
// slice header
|
|
hdr_size = buf[0] >> 3;
|
|
qscale = av_clip(buf[1], 1, 224);
|
|
qscale = qscale > 128 ? qscale - 96 << 2: qscale;
|
|
y_data_size = AV_RB16(buf + 2);
|
|
u_data_size = AV_RB16(buf + 4);
|
|
v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
|
|
if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
|
|
|
|
if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
|
|
return -1;
|
|
}
|
|
|
|
buf += hdr_size;
|
|
|
|
for (i = 0; i < 64; i++) {
|
|
qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
|
|
qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
|
|
}
|
|
|
|
if (ctx->frame_type == 0) {
|
|
luma_stride = pic->linesize[0];
|
|
chroma_stride = pic->linesize[1];
|
|
} else {
|
|
luma_stride = pic->linesize[0] << 1;
|
|
chroma_stride = pic->linesize[1] << 1;
|
|
}
|
|
|
|
if (avctx->pix_fmt == PIX_FMT_YUV444P10) {
|
|
mb_x_shift = 5;
|
|
log2_chroma_blocks_per_mb = 2;
|
|
} else {
|
|
mb_x_shift = 4;
|
|
log2_chroma_blocks_per_mb = 1;
|
|
}
|
|
|
|
dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
|
|
dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
|
|
dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
|
|
|
|
if (ctx->frame_type && ctx->first_field ^ ctx->frame.top_field_first) {
|
|
dest_y += pic->linesize[0];
|
|
dest_u += pic->linesize[1];
|
|
dest_v += pic->linesize[2];
|
|
}
|
|
|
|
decode_slice_luma(avctx, slice, dest_y, luma_stride,
|
|
buf, y_data_size, qmat_luma_scaled);
|
|
|
|
if (!(avctx->flags & CODEC_FLAG_GRAY)) {
|
|
decode_slice_chroma(avctx, slice, dest_u, chroma_stride,
|
|
buf + y_data_size, u_data_size,
|
|
qmat_chroma_scaled, log2_chroma_blocks_per_mb);
|
|
decode_slice_chroma(avctx, slice, dest_v, chroma_stride,
|
|
buf + y_data_size + u_data_size, v_data_size,
|
|
qmat_chroma_scaled, log2_chroma_blocks_per_mb);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_picture(AVCodecContext *avctx)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
int i, threads_ret[ctx->slice_count];
|
|
|
|
avctx->execute2(avctx, decode_slice_thread, NULL, threads_ret, ctx->slice_count);
|
|
|
|
for (i = 0; i < ctx->slice_count; i++)
|
|
if (threads_ret[i] < 0)
|
|
return threads_ret[i];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
AVFrame *frame = avctx->coded_frame;
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
int frame_hdr_size, pic_size;
|
|
|
|
if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
|
|
av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
|
|
return -1;
|
|
}
|
|
|
|
ctx->first_field = 1;
|
|
|
|
buf += 8;
|
|
buf_size -= 8;
|
|
|
|
frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
|
|
if (frame_hdr_size < 0)
|
|
return -1;
|
|
|
|
buf += frame_hdr_size;
|
|
buf_size -= frame_hdr_size;
|
|
|
|
if (frame->data[0])
|
|
avctx->release_buffer(avctx, frame);
|
|
|
|
if (avctx->get_buffer(avctx, frame) < 0)
|
|
return -1;
|
|
|
|
decode_picture:
|
|
pic_size = decode_picture_header(avctx, buf, buf_size);
|
|
if (pic_size < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
|
|
return -1;
|
|
}
|
|
|
|
if (decode_picture(avctx)) {
|
|
av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
|
|
return -1;
|
|
}
|
|
|
|
buf += pic_size;
|
|
buf_size -= pic_size;
|
|
|
|
if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
|
|
ctx->first_field = 0;
|
|
goto decode_picture;
|
|
}
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
*(AVFrame*)data = *frame;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int decode_close(AVCodecContext *avctx)
|
|
{
|
|
ProresContext *ctx = avctx->priv_data;
|
|
|
|
AVFrame *frame = avctx->coded_frame;
|
|
if (frame->data[0])
|
|
avctx->release_buffer(avctx, frame);
|
|
av_freep(&ctx->slices);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_prores_decoder = {
|
|
.name = "prores",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = CODEC_ID_PRORES,
|
|
.priv_data_size = sizeof(ProresContext),
|
|
.init = decode_init,
|
|
.close = decode_close,
|
|
.decode = decode_frame,
|
|
.long_name = NULL_IF_CONFIG_SMALL("ProRes"),
|
|
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_SLICE_THREADS,
|
|
};
|