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FFmpeg/libavcodec/mpegvideo.c
Diego Biurrun 19e30a58fc Deprecate obsolete XvMC hardware decoding support 
XvMC has long ago been superseded by newer acceleration APIs, such as
VDPAU, and few downstreams still support it. Furthermore XvMC is not
implemented within the hwaccel framework, but requires its own specific
code in the MPEG-1/2 decoder, which is a maintenance burden.
2013-11-13 21:07:45 +01:00

2644 lines
91 KiB
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/*
* The simplest mpeg encoder (well, it was the simplest!)
* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* The simplest mpeg encoder (well, it was the simplest!).
*/
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "xvmc_internal.h"
#include "thread.h"
#include <limits.h>
static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
int16_t *block, int n, int qscale);
static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
int16_t *block, int n, int qscale);
static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
int16_t *block, int n, int qscale);
static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
int16_t *block, int n, int qscale);
static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
int16_t *block, int n, int qscale);
static void dct_unquantize_h263_intra_c(MpegEncContext *s,
int16_t *block, int n, int qscale);
static void dct_unquantize_h263_inter_c(MpegEncContext *s,
int16_t *block, int n, int qscale);
static const uint8_t ff_default_chroma_qscale_table[32] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
};
const uint8_t ff_mpeg1_dc_scale_table[128] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
};
static const uint8_t mpeg2_dc_scale_table1[128] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
};
static const uint8_t mpeg2_dc_scale_table2[128] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
};
static const uint8_t mpeg2_dc_scale_table3[128] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
};
const uint8_t *const ff_mpeg2_dc_scale_table[4] = {
ff_mpeg1_dc_scale_table,
mpeg2_dc_scale_table1,
mpeg2_dc_scale_table2,
mpeg2_dc_scale_table3,
};
const enum AVPixelFormat ff_pixfmt_list_420[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
};
static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
int (*mv)[2][4][2],
int mb_x, int mb_y, int mb_intra, int mb_skipped)
{
MpegEncContext *s = opaque;
s->mv_dir = mv_dir;
s->mv_type = mv_type;
s->mb_intra = mb_intra;
s->mb_skipped = mb_skipped;
s->mb_x = mb_x;
s->mb_y = mb_y;
memcpy(s->mv, mv, sizeof(*mv));
ff_init_block_index(s);
ff_update_block_index(s);
s->dsp.clear_blocks(s->block[0]);
s->dest[0] = s->current_picture.f.data[0] + (s->mb_y * 16 * s->linesize) + s->mb_x * 16;
s->dest[1] = s->current_picture.f.data[1] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
s->dest[2] = s->current_picture.f.data[2] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
assert(ref == 0);
ff_MPV_decode_mb(s, s->block);
}
/* init common dct for both encoder and decoder */
av_cold int ff_dct_common_init(MpegEncContext *s)
{
ff_dsputil_init(&s->dsp, s->avctx);
ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
if (s->flags & CODEC_FLAG_BITEXACT)
s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
if (ARCH_ARM)
ff_MPV_common_init_arm(s);
if (ARCH_BFIN)
ff_MPV_common_init_bfin(s);
if (ARCH_PPC)
ff_MPV_common_init_ppc(s);
if (ARCH_X86)
ff_MPV_common_init_x86(s);
/* load & permutate scantables
* note: only wmv uses different ones
*/
if (s->alternate_scan) {
ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_alternate_vertical_scan);
ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_alternate_vertical_scan);
} else {
ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_zigzag_direct);
ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_zigzag_direct);
}
ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
return 0;
}
int ff_mpv_frame_size_alloc(MpegEncContext *s, int linesize)
{
int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
// edge emu needs blocksize + filter length - 1
// (= 17x17 for halfpel / 21x21 for h264)
// VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9
// at uvlinesize. It supports only YUV420 so 24x24 is enough
// linesize * interlaced * MBsize
FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer, alloc_size * 2 * 24,
fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad, alloc_size * 2 * 16 * 3,
fail)
s->me.temp = s->me.scratchpad;
s->rd_scratchpad = s->me.scratchpad;
s->b_scratchpad = s->me.scratchpad;
s->obmc_scratchpad = s->me.scratchpad + 16;
return 0;
fail:
av_freep(&s->edge_emu_buffer);
return AVERROR(ENOMEM);
}
/**
* Allocate a frame buffer
*/
static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
{
int r, ret;
pic->tf.f = &pic->f;
if (s->codec_id != AV_CODEC_ID_WMV3IMAGE &&
s->codec_id != AV_CODEC_ID_VC1IMAGE &&
s->codec_id != AV_CODEC_ID_MSS2)
r = ff_thread_get_buffer(s->avctx, &pic->tf,
pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
else {
pic->f.width = s->avctx->width;
pic->f.height = s->avctx->height;
pic->f.format = s->avctx->pix_fmt;
r = avcodec_default_get_buffer2(s->avctx, &pic->f, 0);
}
if (r < 0 || !pic->f.data[0]) {
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
r, pic->f.data[0]);
return -1;
}
if (s->avctx->hwaccel) {
assert(!pic->hwaccel_picture_private);
if (s->avctx->hwaccel->priv_data_size) {
pic->hwaccel_priv_buf = av_buffer_allocz(s->avctx->hwaccel->priv_data_size);
if (!pic->hwaccel_priv_buf) {
av_log(s->avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
return -1;
}
pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
}
}
if (s->linesize && (s->linesize != pic->f.linesize[0] ||
s->uvlinesize != pic->f.linesize[1])) {
av_log(s->avctx, AV_LOG_ERROR,
"get_buffer() failed (stride changed)\n");
ff_mpeg_unref_picture(s, pic);
return -1;
}
if (pic->f.linesize[1] != pic->f.linesize[2]) {
av_log(s->avctx, AV_LOG_ERROR,
"get_buffer() failed (uv stride mismatch)\n");
ff_mpeg_unref_picture(s, pic);
return -1;
}
if (!s->edge_emu_buffer &&
(ret = ff_mpv_frame_size_alloc(s, pic->f.linesize[0])) < 0) {
av_log(s->avctx, AV_LOG_ERROR,
"get_buffer() failed to allocate context scratch buffers.\n");
ff_mpeg_unref_picture(s, pic);
return ret;
}
return 0;
}
static void free_picture_tables(Picture *pic)
{
int i;
av_buffer_unref(&pic->mb_var_buf);
av_buffer_unref(&pic->mc_mb_var_buf);
av_buffer_unref(&pic->mb_mean_buf);
av_buffer_unref(&pic->mbskip_table_buf);
av_buffer_unref(&pic->qscale_table_buf);
av_buffer_unref(&pic->mb_type_buf);
for (i = 0; i < 2; i++) {
av_buffer_unref(&pic->motion_val_buf[i]);
av_buffer_unref(&pic->ref_index_buf[i]);
}
}
static int alloc_picture_tables(MpegEncContext *s, Picture *pic)
{
const int big_mb_num = s->mb_stride * (s->mb_height + 1) + 1;
const int mb_array_size = s->mb_stride * s->mb_height;
const int b8_array_size = s->b8_stride * s->mb_height * 2;
int i;
pic->mbskip_table_buf = av_buffer_allocz(mb_array_size + 2);
pic->qscale_table_buf = av_buffer_allocz(big_mb_num + s->mb_stride);
pic->mb_type_buf = av_buffer_allocz((big_mb_num + s->mb_stride) *
sizeof(uint32_t));
if (!pic->mbskip_table_buf || !pic->qscale_table_buf || !pic->mb_type_buf)
return AVERROR(ENOMEM);
if (s->encoding) {
pic->mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
pic->mc_mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
pic->mb_mean_buf = av_buffer_allocz(mb_array_size);
if (!pic->mb_var_buf || !pic->mc_mb_var_buf || !pic->mb_mean_buf)
return AVERROR(ENOMEM);
}
if (s->out_format == FMT_H263 || s->encoding) {
int mv_size = 2 * (b8_array_size + 4) * sizeof(int16_t);
int ref_index_size = 4 * mb_array_size;
for (i = 0; mv_size && i < 2; i++) {
pic->motion_val_buf[i] = av_buffer_allocz(mv_size);
pic->ref_index_buf[i] = av_buffer_allocz(ref_index_size);
if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
return AVERROR(ENOMEM);
}
}
return 0;
}
static int make_tables_writable(Picture *pic)
{
int ret, i;
#define MAKE_WRITABLE(table) \
do {\
if (pic->table &&\
(ret = av_buffer_make_writable(&pic->table)) < 0)\
return ret;\
} while (0)
MAKE_WRITABLE(mb_var_buf);
MAKE_WRITABLE(mc_mb_var_buf);
MAKE_WRITABLE(mb_mean_buf);
MAKE_WRITABLE(mbskip_table_buf);
MAKE_WRITABLE(qscale_table_buf);
MAKE_WRITABLE(mb_type_buf);
for (i = 0; i < 2; i++) {
MAKE_WRITABLE(motion_val_buf[i]);
MAKE_WRITABLE(ref_index_buf[i]);
}
return 0;
}
/**
* Allocate a Picture.
* The pixels are allocated/set by calling get_buffer() if shared = 0
*/
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
{
int i, ret;
if (shared) {
assert(pic->f.data[0]);
pic->shared = 1;
} else {
assert(!pic->f.data[0]);
if (alloc_frame_buffer(s, pic) < 0)
return -1;
s->linesize = pic->f.linesize[0];
s->uvlinesize = pic->f.linesize[1];
}
if (!pic->qscale_table_buf)
ret = alloc_picture_tables(s, pic);
else
ret = make_tables_writable(pic);
if (ret < 0)
goto fail;
if (s->encoding) {
pic->mb_var = (uint16_t*)pic->mb_var_buf->data;
pic->mc_mb_var = (uint16_t*)pic->mc_mb_var_buf->data;
pic->mb_mean = pic->mb_mean_buf->data;
}
pic->mbskip_table = pic->mbskip_table_buf->data;
pic->qscale_table = pic->qscale_table_buf->data + 2 * s->mb_stride + 1;
pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * s->mb_stride + 1;
if (pic->motion_val_buf[0]) {
for (i = 0; i < 2; i++) {
pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
pic->ref_index[i] = pic->ref_index_buf[i]->data;
}
}
return 0;
fail:
av_log(s->avctx, AV_LOG_ERROR, "Error allocating a picture.\n");
ff_mpeg_unref_picture(s, pic);
free_picture_tables(pic);
return AVERROR(ENOMEM);
}
/**
* Deallocate a picture.
*/
void ff_mpeg_unref_picture(MpegEncContext *s, Picture *pic)
{
int off = offsetof(Picture, mb_mean) + sizeof(pic->mb_mean);
pic->tf.f = &pic->f;
/* WM Image / Screen codecs allocate internal buffers with different
* dimensions / colorspaces; ignore user-defined callbacks for these. */
if (s->codec_id != AV_CODEC_ID_WMV3IMAGE &&
s->codec_id != AV_CODEC_ID_VC1IMAGE &&
s->codec_id != AV_CODEC_ID_MSS2)
ff_thread_release_buffer(s->avctx, &pic->tf);
else
av_frame_unref(&pic->f);
av_buffer_unref(&pic->hwaccel_priv_buf);
if (pic->needs_realloc)
free_picture_tables(pic);
memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
}
static int update_picture_tables(Picture *dst, Picture *src)
{
int i;
#define UPDATE_TABLE(table)\
do {\
if (src->table &&\
(!dst->table || dst->table->buffer != src->table->buffer)) {\
av_buffer_unref(&dst->table);\
dst->table = av_buffer_ref(src->table);\
if (!dst->table) {\
free_picture_tables(dst);\
return AVERROR(ENOMEM);\
}\
}\
} while (0)
UPDATE_TABLE(mb_var_buf);
UPDATE_TABLE(mc_mb_var_buf);
UPDATE_TABLE(mb_mean_buf);
UPDATE_TABLE(mbskip_table_buf);
UPDATE_TABLE(qscale_table_buf);
UPDATE_TABLE(mb_type_buf);
for (i = 0; i < 2; i++) {
UPDATE_TABLE(motion_val_buf[i]);
UPDATE_TABLE(ref_index_buf[i]);
}
dst->mb_var = src->mb_var;
dst->mc_mb_var = src->mc_mb_var;
dst->mb_mean = src->mb_mean;
dst->mbskip_table = src->mbskip_table;
dst->qscale_table = src->qscale_table;
dst->mb_type = src->mb_type;
for (i = 0; i < 2; i++) {
dst->motion_val[i] = src->motion_val[i];
dst->ref_index[i] = src->ref_index[i];
}
return 0;
}
int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
{
int ret;
av_assert0(!dst->f.buf[0]);
av_assert0(src->f.buf[0]);
src->tf.f = &src->f;
dst->tf.f = &dst->f;
ret = ff_thread_ref_frame(&dst->tf, &src->tf);
if (ret < 0)
goto fail;
ret = update_picture_tables(dst, src);
if (ret < 0)
goto fail;
if (src->hwaccel_picture_private) {
dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
if (!dst->hwaccel_priv_buf)
goto fail;
dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
}
dst->field_picture = src->field_picture;
dst->mb_var_sum = src->mb_var_sum;
dst->mc_mb_var_sum = src->mc_mb_var_sum;
dst->b_frame_score = src->b_frame_score;
dst->needs_realloc = src->needs_realloc;
dst->reference = src->reference;
dst->shared = src->shared;
return 0;
fail:
ff_mpeg_unref_picture(s, dst);
return ret;
}
static int init_duplicate_context(MpegEncContext *s)
{
int y_size = s->b8_stride * (2 * s->mb_height + 1);
int c_size = s->mb_stride * (s->mb_height + 1);
int yc_size = y_size + 2 * c_size;
int i;
s->edge_emu_buffer =
s->me.scratchpad =
s->me.temp =
s->rd_scratchpad =
s->b_scratchpad =
s->obmc_scratchpad = NULL;
if (s->encoding) {
FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
ME_MAP_SIZE * sizeof(uint32_t), fail)
FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
ME_MAP_SIZE * sizeof(uint32_t), fail)
if (s->avctx->noise_reduction) {
FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
2 * 64 * sizeof(int), fail)
}
}
FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
s->block = s->blocks[0];
for (i = 0; i < 12; i++) {
s->pblocks[i] = &s->block[i];
}
if (s->out_format == FMT_H263) {
/* ac values */
FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base,
yc_size * sizeof(int16_t) * 16, fail);
s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
s->ac_val[2] = s->ac_val[1] + c_size;
}
return 0;
fail:
return -1; // free() through ff_MPV_common_end()
}
static void free_duplicate_context(MpegEncContext *s)
{
if (s == NULL)
return;
av_freep(&s->edge_emu_buffer);
av_freep(&s->me.scratchpad);
s->me.temp =
s->rd_scratchpad =
s->b_scratchpad =
s->obmc_scratchpad = NULL;
av_freep(&s->dct_error_sum);
av_freep(&s->me.map);
av_freep(&s->me.score_map);
av_freep(&s->blocks);
av_freep(&s->ac_val_base);
s->block = NULL;
}
static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
{
#define COPY(a) bak->a = src->a
COPY(edge_emu_buffer);
COPY(me.scratchpad);
COPY(me.temp);
COPY(rd_scratchpad);
COPY(b_scratchpad);
COPY(obmc_scratchpad);
COPY(me.map);
COPY(me.score_map);
COPY(blocks);
COPY(block);
COPY(start_mb_y);
COPY(end_mb_y);
COPY(me.map_generation);
COPY(pb);
COPY(dct_error_sum);
COPY(dct_count[0]);
COPY(dct_count[1]);
COPY(ac_val_base);
COPY(ac_val[0]);
COPY(ac_val[1]);
COPY(ac_val[2]);
#undef COPY
}
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
{
MpegEncContext bak;
int i, ret;
// FIXME copy only needed parts
// START_TIMER
backup_duplicate_context(&bak, dst);
memcpy(dst, src, sizeof(MpegEncContext));
backup_duplicate_context(dst, &bak);
for (i = 0; i < 12; i++) {
dst->pblocks[i] = &dst->block[i];
}
if (!dst->edge_emu_buffer &&
(ret = ff_mpv_frame_size_alloc(dst, dst->linesize)) < 0) {
av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
"scratch buffers.\n");
return ret;
}
// STOP_TIMER("update_duplicate_context")
// about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
return 0;
}
int ff_mpeg_update_thread_context(AVCodecContext *dst,
const AVCodecContext *src)
{
int i, ret;
MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
if (dst == src || !s1->context_initialized)
return 0;
// FIXME can parameters change on I-frames?
// in that case dst may need a reinit
if (!s->context_initialized) {
memcpy(s, s1, sizeof(MpegEncContext));
s->avctx = dst;
s->bitstream_buffer = NULL;
s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
ff_MPV_common_init(s);
}
if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
int err;
s->context_reinit = 0;
s->height = s1->height;
s->width = s1->width;
if ((err = ff_MPV_common_frame_size_change(s)) < 0)
return err;
}
s->avctx->coded_height = s1->avctx->coded_height;
s->avctx->coded_width = s1->avctx->coded_width;
s->avctx->width = s1->avctx->width;
s->avctx->height = s1->avctx->height;
s->coded_picture_number = s1->coded_picture_number;
s->picture_number = s1->picture_number;
s->input_picture_number = s1->input_picture_number;
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
ff_mpeg_unref_picture(s, &s->picture[i]);
if (s1->picture[i].f.data[0] &&
(ret = ff_mpeg_ref_picture(s, &s->picture[i], &s1->picture[i])) < 0)
return ret;
}
#define UPDATE_PICTURE(pic)\
do {\
ff_mpeg_unref_picture(s, &s->pic);\
if (s1->pic.f.data[0])\
ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
else\
ret = update_picture_tables(&s->pic, &s1->pic);\
if (ret < 0)\
return ret;\
} while (0)
UPDATE_PICTURE(current_picture);
UPDATE_PICTURE(last_picture);
UPDATE_PICTURE(next_picture);
s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
// Error/bug resilience
s->next_p_frame_damaged = s1->next_p_frame_damaged;
s->workaround_bugs = s1->workaround_bugs;
// MPEG4 timing info
memcpy(&s->time_increment_bits, &s1->time_increment_bits,
(char *) &s1->shape - (char *) &s1->time_increment_bits);
// B-frame info
s->max_b_frames = s1->max_b_frames;
s->low_delay = s1->low_delay;
s->droppable = s1->droppable;
// DivX handling (doesn't work)
s->divx_packed = s1->divx_packed;
if (s1->bitstream_buffer) {
if (s1->bitstream_buffer_size +
FF_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size)
av_fast_malloc(&s->bitstream_buffer,
&s->allocated_bitstream_buffer_size,
s1->allocated_bitstream_buffer_size);
s->bitstream_buffer_size = s1->bitstream_buffer_size;
memcpy(s->bitstream_buffer, s1->bitstream_buffer,
s1->bitstream_buffer_size);
memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
FF_INPUT_BUFFER_PADDING_SIZE);
}
// linesize dependend scratch buffer allocation
if (!s->edge_emu_buffer)
if (s1->linesize) {
if (ff_mpv_frame_size_alloc(s, s1->linesize) < 0) {
av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
"scratch buffers.\n");
return AVERROR(ENOMEM);
}
} else {
av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
"be allocated due to unknown size.\n");
return AVERROR_BUG;
}
// MPEG2/interlacing info
memcpy(&s->progressive_sequence, &s1->progressive_sequence,
(char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
if (!s1->first_field) {
s->last_pict_type = s1->pict_type;
if (s1->current_picture_ptr)
s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f.quality;
if (s1->pict_type != AV_PICTURE_TYPE_B) {
s->last_non_b_pict_type = s1->pict_type;
}
}
return 0;
}
/**
* Set the given MpegEncContext to common defaults
* (same for encoding and decoding).
* The changed fields will not depend upon the
* prior state of the MpegEncContext.
*/
void ff_MPV_common_defaults(MpegEncContext *s)
{
s->y_dc_scale_table =
s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
s->chroma_qscale_table = ff_default_chroma_qscale_table;
s->progressive_frame = 1;
s->progressive_sequence = 1;
s->picture_structure = PICT_FRAME;
s->coded_picture_number = 0;
s->picture_number = 0;
s->input_picture_number = 0;
s->picture_in_gop_number = 0;
s->f_code = 1;
s->b_code = 1;
s->slice_context_count = 1;
}
/**
* Set the given MpegEncContext to defaults for decoding.
* the changed fields will not depend upon
* the prior state of the MpegEncContext.
*/
void ff_MPV_decode_defaults(MpegEncContext *s)
{
ff_MPV_common_defaults(s);
}
static int init_er(MpegEncContext *s)
{
ERContext *er = &s->er;
int mb_array_size = s->mb_height * s->mb_stride;
int i;
er->avctx = s->avctx;
er->dsp = &s->dsp;
er->mb_index2xy = s->mb_index2xy;
er->mb_num = s->mb_num;
er->mb_width = s->mb_width;
er->mb_height = s->mb_height;
er->mb_stride = s->mb_stride;
er->b8_stride = s->b8_stride;
er->er_temp_buffer = av_malloc(s->mb_height * s->mb_stride);
er->error_status_table = av_mallocz(mb_array_size);
if (!er->er_temp_buffer || !er->error_status_table)
goto fail;
er->mbskip_table = s->mbskip_table;
er->mbintra_table = s->mbintra_table;
for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
er->dc_val[i] = s->dc_val[i];
er->decode_mb = mpeg_er_decode_mb;
er->opaque = s;
return 0;
fail:
av_freep(&er->er_temp_buffer);
av_freep(&er->error_status_table);
return AVERROR(ENOMEM);
}
/**
* Initialize and allocates MpegEncContext fields dependent on the resolution.
*/
static int init_context_frame(MpegEncContext *s)
{
int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
s->mb_width = (s->width + 15) / 16;
s->mb_stride = s->mb_width + 1;
s->b8_stride = s->mb_width * 2 + 1;
s->b4_stride = s->mb_width * 4 + 1;
mb_array_size = s->mb_height * s->mb_stride;
mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
/* set default edge pos, will be overriden
* in decode_header if needed */
s->h_edge_pos = s->mb_width * 16;
s->v_edge_pos = s->mb_height * 16;
s->mb_num = s->mb_width * s->mb_height;
s->block_wrap[0] =
s->block_wrap[1] =
s->block_wrap[2] =
s->block_wrap[3] = s->b8_stride;
s->block_wrap[4] =
s->block_wrap[5] = s->mb_stride;
y_size = s->b8_stride * (2 * s->mb_height + 1);
c_size = s->mb_stride * (s->mb_height + 1);
yc_size = y_size + 2 * c_size;
FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
fail); // error ressilience code looks cleaner with this
for (y = 0; y < s->mb_height; y++)
for (x = 0; x < s->mb_width; x++)
s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
s->mb_index2xy[s->mb_height * s->mb_width] =
(s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
if (s->encoding) {
/* Allocate MV tables */
FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base,
mv_table_size * 2 * sizeof(int16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base,
mv_table_size * 2 * sizeof(int16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base,
mv_table_size * 2 * sizeof(int16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base,
mv_table_size * 2 * sizeof(int16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base,
mv_table_size * 2 * sizeof(int16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base,
mv_table_size * 2 * sizeof(int16_t), fail);
s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1;
s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1;
s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base +
s->mb_stride + 1;
s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base +
s->mb_stride + 1;
s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1;
/* Allocate MB type table */
FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size *
sizeof(uint16_t), fail); // needed for encoding
FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size *
sizeof(int), fail);
FF_ALLOC_OR_GOTO(s->avctx, s->cplx_tab,
mb_array_size * sizeof(float), fail);
FF_ALLOC_OR_GOTO(s->avctx, s->bits_tab,
mb_array_size * sizeof(float), fail);
}
if (s->codec_id == AV_CODEC_ID_MPEG4 ||
(s->flags & CODEC_FLAG_INTERLACED_ME)) {
/* interlaced direct mode decoding tables */
for (i = 0; i < 2; i++) {
int j, k;
for (j = 0; j < 2; j++) {
for (k = 0; k < 2; k++) {
FF_ALLOCZ_OR_GOTO(s->avctx,
s->b_field_mv_table_base[i][j][k],
mv_table_size * 2 * sizeof(int16_t),
fail);
s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
s->mb_stride + 1;
}
FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j],
mb_array_size * 2 * sizeof(uint8_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j],
mv_table_size * 2 * sizeof(int16_t), fail);
s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j]
+ s->mb_stride + 1;
}
FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i],
mb_array_size * 2 * sizeof(uint8_t), fail);
}
}
if (s->out_format == FMT_H263) {
/* cbp values */
FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size, fail);
s->coded_block = s->coded_block_base + s->b8_stride + 1;
/* cbp, ac_pred, pred_dir */
FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table,
mb_array_size * sizeof(uint8_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table,
mb_array_size * sizeof(uint8_t), fail);
}
if (s->h263_pred || s->h263_plus || !s->encoding) {
/* dc values */
// MN: we need these for error resilience of intra-frames
FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base,
yc_size * sizeof(int16_t), fail);
s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
s->dc_val[2] = s->dc_val[1] + c_size;
for (i = 0; i < yc_size; i++)
s->dc_val_base[i] = 1024;
}
/* which mb is a intra block */
FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
memset(s->mbintra_table, 1, mb_array_size);
/* init macroblock skip table */
FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
// Note the + 1 is for a quicker mpeg4 slice_end detection
return init_er(s);
fail:
return AVERROR(ENOMEM);
}
/**
* init common structure for both encoder and decoder.
* this assumes that some variables like width/height are already set
*/
av_cold int ff_MPV_common_init(MpegEncContext *s)
{
int i;
int nb_slices = (HAVE_THREADS &&
s->avctx->active_thread_type & FF_THREAD_SLICE) ?
s->avctx->thread_count : 1;
if (s->encoding && s->avctx->slices)
nb_slices = s->avctx->slices;
if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
s->mb_height = (s->height + 31) / 32 * 2;
else
s->mb_height = (s->height + 15) / 16;
if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
av_log(s->avctx, AV_LOG_ERROR,
"decoding to AV_PIX_FMT_NONE is not supported.\n");
return -1;
}
if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
int max_slices;
if (s->mb_height)
max_slices = FFMIN(MAX_THREADS, s->mb_height);
else
max_slices = MAX_THREADS;
av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
" reducing to %d\n", nb_slices, max_slices);
nb_slices = max_slices;
}
if ((s->width || s->height) &&
av_image_check_size(s->width, s->height, 0, s->avctx))
return -1;
ff_dct_common_init(s);
s->flags = s->avctx->flags;
s->flags2 = s->avctx->flags2;
/* set chroma shifts */
av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
&s->chroma_x_shift,
&s->chroma_y_shift);
/* convert fourcc to upper case */
s->codec_tag = avpriv_toupper4(s->avctx->codec_tag);
s->stream_codec_tag = avpriv_toupper4(s->avctx->stream_codec_tag);
if (s->width && s->height) {
s->avctx->coded_frame = &s->current_picture.f;
if (s->encoding) {
if (s->msmpeg4_version) {
FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_stats,
2 * 2 * (MAX_LEVEL + 1) *
(MAX_RUN + 1) * 2 * sizeof(int), fail);
}
FF_ALLOCZ_OR_GOTO(s->avctx, s->avctx->stats_out, 256, fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->q_intra_matrix,
64 * 32 * sizeof(int), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->q_inter_matrix,
64 * 32 * sizeof(int), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->q_intra_matrix16,
64 * 32 * 2 * sizeof(uint16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->q_inter_matrix16,
64 * 32 * 2 * sizeof(uint16_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->input_picture,
MAX_PICTURE_COUNT * sizeof(Picture *), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->reordered_input_picture,
MAX_PICTURE_COUNT * sizeof(Picture *), fail);
if (s->avctx->noise_reduction) {
FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_offset,
2 * 64 * sizeof(uint16_t), fail);
}
}
}
FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
MAX_PICTURE_COUNT * sizeof(Picture), fail);
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
avcodec_get_frame_defaults(&s->picture[i].f);
}
memset(&s->next_picture, 0, sizeof(s->next_picture));
memset(&s->last_picture, 0, sizeof(s->last_picture));
memset(&s->current_picture, 0, sizeof(s->current_picture));
avcodec_get_frame_defaults(&s->next_picture.f);
avcodec_get_frame_defaults(&s->last_picture.f);
avcodec_get_frame_defaults(&s->current_picture.f);
if (s->width && s->height) {
if (init_context_frame(s))
goto fail;
s->parse_context.state = -1;
}
s->context_initialized = 1;
s->thread_context[0] = s;
if (s->width && s->height) {
if (nb_slices > 1) {
for (i = 1; i < nb_slices; i++) {
s->thread_context[i] = av_malloc(sizeof(MpegEncContext));
memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
}
for (i = 0; i < nb_slices; i++) {
if (init_duplicate_context(s->thread_context[i]) < 0)
goto fail;
s->thread_context[i]->start_mb_y =
(s->mb_height * (i) + nb_slices / 2) / nb_slices;
s->thread_context[i]->end_mb_y =
(s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
}
} else {
if (init_duplicate_context(s) < 0)
goto fail;
s->start_mb_y = 0;
s->end_mb_y = s->mb_height;
}
s->slice_context_count = nb_slices;
}
return 0;
fail:
ff_MPV_common_end(s);
return -1;
}
/**
* Frees and resets MpegEncContext fields depending on the resolution.
* Is used during resolution changes to avoid a full reinitialization of the
* codec.
*/
static int free_context_frame(MpegEncContext *s)
{
int i, j, k;
av_freep(&s->mb_type);
av_freep(&s->p_mv_table_base);
av_freep(&s->b_forw_mv_table_base);
av_freep(&s->b_back_mv_table_base);
av_freep(&s->b_bidir_forw_mv_table_base);
av_freep(&s->b_bidir_back_mv_table_base);
av_freep(&s->b_direct_mv_table_base);
s->p_mv_table = NULL;
s->b_forw_mv_table = NULL;
s->b_back_mv_table = NULL;
s->b_bidir_forw_mv_table = NULL;
s->b_bidir_back_mv_table = NULL;
s->b_direct_mv_table = NULL;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++) {
for (k = 0; k < 2; k++) {
av_freep(&s->b_field_mv_table_base[i][j][k]);
s->b_field_mv_table[i][j][k] = NULL;
}
av_freep(&s->b_field_select_table[i][j]);
av_freep(&s->p_field_mv_table_base[i][j]);
s->p_field_mv_table[i][j] = NULL;
}
av_freep(&s->p_field_select_table[i]);
}
av_freep(&s->dc_val_base);
av_freep(&s->coded_block_base);
av_freep(&s->mbintra_table);
av_freep(&s->cbp_table);
av_freep(&s->pred_dir_table);
av_freep(&s->mbskip_table);
av_freep(&s->er.error_status_table);
av_freep(&s->er.er_temp_buffer);
av_freep(&s->mb_index2xy);
av_freep(&s->lambda_table);
av_freep(&s->cplx_tab);
av_freep(&s->bits_tab);
s->linesize = s->uvlinesize = 0;
return 0;
}
int ff_MPV_common_frame_size_change(MpegEncContext *s)
{
int i, err = 0;
if (s->slice_context_count > 1) {
for (i = 0; i < s->slice_context_count; i++) {
free_duplicate_context(s->thread_context[i]);
}
for (i = 1; i < s->slice_context_count; i++) {
av_freep(&s->thread_context[i]);
}
} else
free_duplicate_context(s);
if ((err = free_context_frame(s)) < 0)
return err;
if (s->picture)
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
s->picture[i].needs_realloc = 1;
}
s->last_picture_ptr =
s->next_picture_ptr =
s->current_picture_ptr = NULL;
// init
if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
s->mb_height = (s->height + 31) / 32 * 2;
else
s->mb_height = (s->height + 15) / 16;
if ((s->width || s->height) &&
av_image_check_size(s->width, s->height, 0, s->avctx))
return AVERROR_INVALIDDATA;
if ((err = init_context_frame(s)))
goto fail;
s->thread_context[0] = s;
if (s->width && s->height) {
int nb_slices = s->slice_context_count;
if (nb_slices > 1) {
for (i = 1; i < nb_slices; i++) {
s->thread_context[i] = av_malloc(sizeof(MpegEncContext));
memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
}
for (i = 0; i < nb_slices; i++) {
if (init_duplicate_context(s->thread_context[i]) < 0)
goto fail;
s->thread_context[i]->start_mb_y =
(s->mb_height * (i) + nb_slices / 2) / nb_slices;
s->thread_context[i]->end_mb_y =
(s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
}
} else {
if (init_duplicate_context(s) < 0)
goto fail;
s->start_mb_y = 0;
s->end_mb_y = s->mb_height;
}
s->slice_context_count = nb_slices;
}
return 0;
fail:
ff_MPV_common_end(s);
return err;
}
/* init common structure for both encoder and decoder */
void ff_MPV_common_end(MpegEncContext *s)
{
int i;
if (s->slice_context_count > 1) {
for (i = 0; i < s->slice_context_count; i++) {
free_duplicate_context(s->thread_context[i]);
}
for (i = 1; i < s->slice_context_count; i++) {
av_freep(&s->thread_context[i]);
}
s->slice_context_count = 1;
} else free_duplicate_context(s);
av_freep(&s->parse_context.buffer);
s->parse_context.buffer_size = 0;
av_freep(&s->bitstream_buffer);
s->allocated_bitstream_buffer_size = 0;
av_freep(&s->avctx->stats_out);
av_freep(&s->ac_stats);
av_freep(&s->q_intra_matrix);
av_freep(&s->q_inter_matrix);
av_freep(&s->q_intra_matrix16);
av_freep(&s->q_inter_matrix16);
av_freep(&s->input_picture);
av_freep(&s->reordered_input_picture);
av_freep(&s->dct_offset);
if (s->picture) {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
free_picture_tables(&s->picture[i]);
ff_mpeg_unref_picture(s, &s->picture[i]);
}
}
av_freep(&s->picture);
free_picture_tables(&s->last_picture);
ff_mpeg_unref_picture(s, &s->last_picture);
free_picture_tables(&s->current_picture);
ff_mpeg_unref_picture(s, &s->current_picture);
free_picture_tables(&s->next_picture);
ff_mpeg_unref_picture(s, &s->next_picture);
free_picture_tables(&s->new_picture);
ff_mpeg_unref_picture(s, &s->new_picture);
free_context_frame(s);
s->context_initialized = 0;
s->last_picture_ptr =
s->next_picture_ptr =
s->current_picture_ptr = NULL;
s->linesize = s->uvlinesize = 0;
}
av_cold void ff_init_rl(RLTable *rl,
uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
{
int8_t max_level[MAX_RUN + 1], max_run[MAX_LEVEL + 1];
uint8_t index_run[MAX_RUN + 1];
int last, run, level, start, end, i;
/* If table is static, we can quit if rl->max_level[0] is not NULL */
if (static_store && rl->max_level[0])
return;
/* compute max_level[], max_run[] and index_run[] */
for (last = 0; last < 2; last++) {
if (last == 0) {
start = 0;
end = rl->last;
} else {
start = rl->last;
end = rl->n;
}
memset(max_level, 0, MAX_RUN + 1);
memset(max_run, 0, MAX_LEVEL + 1);
memset(index_run, rl->n, MAX_RUN + 1);
for (i = start; i < end; i++) {
run = rl->table_run[i];
level = rl->table_level[i];
if (index_run[run] == rl->n)
index_run[run] = i;
if (level > max_level[run])
max_level[run] = level;
if (run > max_run[level])
max_run[level] = run;
}
if (static_store)
rl->max_level[last] = static_store[last];
else
rl->max_level[last] = av_malloc(MAX_RUN + 1);
memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
if (static_store)
rl->max_run[last] = static_store[last] + MAX_RUN + 1;
else
rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
if (static_store)
rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
else
rl->index_run[last] = av_malloc(MAX_RUN + 1);
memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
}
}
av_cold void ff_init_vlc_rl(RLTable *rl)
{
int i, q;
for (q = 0; q < 32; q++) {
int qmul = q * 2;
int qadd = (q - 1) | 1;
if (q == 0) {
qmul = 1;
qadd = 0;
}
for (i = 0; i < rl->vlc.table_size; i++) {
int code = rl->vlc.table[i][0];
int len = rl->vlc.table[i][1];
int level, run;
if (len == 0) { // illegal code
run = 66;
level = MAX_LEVEL;
} else if (len < 0) { // more bits needed
run = 0;
level = code;
} else {
if (code == rl->n) { // esc
run = 66;
level = 0;
} else {
run = rl->table_run[code] + 1;
level = rl->table_level[code] * qmul + qadd;
if (code >= rl->last) run += 192;
}
}
rl->rl_vlc[q][i].len = len;
rl->rl_vlc[q][i].level = level;
rl->rl_vlc[q][i].run = run;
}
}
}
void ff_release_unused_pictures(MpegEncContext*s, int remove_current)
{
int i;
/* release non reference frames */
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (!s->picture[i].reference &&
(remove_current || &s->picture[i] != s->current_picture_ptr)) {
ff_mpeg_unref_picture(s, &s->picture[i]);
}
}
}
static inline int pic_is_unused(MpegEncContext *s, Picture *pic)
{
if (pic->f.data[0] == NULL)
return 1;
if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
return 1;
return 0;
}
static int find_unused_picture(MpegEncContext *s, int shared)
{
int i;
if (shared) {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (s->picture[i].f.data[0] == NULL)
return i;
}
} else {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (pic_is_unused(s, &s->picture[i]))
return i;
}
}
return AVERROR_INVALIDDATA;
}
int ff_find_unused_picture(MpegEncContext *s, int shared)
{
int ret = find_unused_picture(s, shared);
if (ret >= 0 && ret < MAX_PICTURE_COUNT) {
if (s->picture[ret].needs_realloc) {
s->picture[ret].needs_realloc = 0;
free_picture_tables(&s->picture[ret]);
ff_mpeg_unref_picture(s, &s->picture[ret]);
avcodec_get_frame_defaults(&s->picture[ret].f);
}
}
return ret;
}
static void update_noise_reduction(MpegEncContext *s)
{
int intra, i;
for (intra = 0; intra < 2; intra++) {
if (s->dct_count[intra] > (1 << 16)) {
for (i = 0; i < 64; i++) {
s->dct_error_sum[intra][i] >>= 1;
}
s->dct_count[intra] >>= 1;
}
for (i = 0; i < 64; i++) {
s->dct_offset[intra][i] = (s->avctx->noise_reduction *
s->dct_count[intra] +
s->dct_error_sum[intra][i] / 2) /
(s->dct_error_sum[intra][i] + 1);
}
}
}
/**
* generic function for encode/decode called after coding/decoding
* the header and before a frame is coded/decoded.
*/
int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
{
int i, ret;
Picture *pic;
s->mb_skipped = 0;
/* mark & release old frames */
if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
s->last_picture_ptr != s->next_picture_ptr &&
s->last_picture_ptr->f.data[0]) {
ff_mpeg_unref_picture(s, s->last_picture_ptr);
}
/* release forgotten pictures */
/* if (mpeg124/h263) */
if (!s->encoding) {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (&s->picture[i] != s->last_picture_ptr &&
&s->picture[i] != s->next_picture_ptr &&
s->picture[i].reference && !s->picture[i].needs_realloc) {
if (!(avctx->active_thread_type & FF_THREAD_FRAME))
av_log(avctx, AV_LOG_ERROR,
"releasing zombie picture\n");
ff_mpeg_unref_picture(s, &s->picture[i]);
}
}
}
ff_mpeg_unref_picture(s, &s->current_picture);
if (!s->encoding) {
ff_release_unused_pictures(s, 1);
if (s->current_picture_ptr &&
s->current_picture_ptr->f.data[0] == NULL) {
// we already have a unused image
// (maybe it was set before reading the header)
pic = s->current_picture_ptr;
} else {
i = ff_find_unused_picture(s, 0);
if (i < 0) {
av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
return i;
}
pic = &s->picture[i];
}
pic->reference = 0;
if (!s->droppable) {
if (s->pict_type != AV_PICTURE_TYPE_B)
pic->reference = 3;
}
pic->f.coded_picture_number = s->coded_picture_number++;
if (ff_alloc_picture(s, pic, 0) < 0)
return -1;
s->current_picture_ptr = pic;
// FIXME use only the vars from current_pic
s->current_picture_ptr->f.top_field_first = s->top_field_first;
if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
if (s->picture_structure != PICT_FRAME)
s->current_picture_ptr->f.top_field_first =
(s->picture_structure == PICT_TOP_FIELD) == s->first_field;
}
s->current_picture_ptr->f.interlaced_frame = !s->progressive_frame &&
!s->progressive_sequence;
s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
}
s->current_picture_ptr->f.pict_type = s->pict_type;
// if (s->flags && CODEC_FLAG_QSCALE)
// s->current_picture_ptr->quality = s->new_picture_ptr->quality;
s->current_picture_ptr->f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
s->current_picture_ptr)) < 0)
return ret;
if (s->pict_type != AV_PICTURE_TYPE_B) {
s->last_picture_ptr = s->next_picture_ptr;
if (!s->droppable)
s->next_picture_ptr = s->current_picture_ptr;
}
av_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
s->last_picture_ptr ? s->last_picture_ptr->f.data[0] : NULL,
s->next_picture_ptr ? s->next_picture_ptr->f.data[0] : NULL,
s->current_picture_ptr ? s->current_picture_ptr->f.data[0] : NULL,
s->pict_type, s->droppable);
if ((s->last_picture_ptr == NULL ||
s->last_picture_ptr->f.data[0] == NULL) &&
(s->pict_type != AV_PICTURE_TYPE_I ||
s->picture_structure != PICT_FRAME)) {
int h_chroma_shift, v_chroma_shift;
av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
&h_chroma_shift, &v_chroma_shift);
if (s->pict_type != AV_PICTURE_TYPE_I)
av_log(avctx, AV_LOG_ERROR,
"warning: first frame is no keyframe\n");
else if (s->picture_structure != PICT_FRAME)
av_log(avctx, AV_LOG_INFO,
"allocate dummy last picture for field based first keyframe\n");
/* Allocate a dummy frame */
i = ff_find_unused_picture(s, 0);
if (i < 0) {
av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
return i;
}
s->last_picture_ptr = &s->picture[i];
if (ff_alloc_picture(s, s->last_picture_ptr, 0) < 0) {
s->last_picture_ptr = NULL;
return -1;
}
memset(s->last_picture_ptr->f.data[0], 0,
avctx->height * s->last_picture_ptr->f.linesize[0]);
memset(s->last_picture_ptr->f.data[1], 0x80,
(avctx->height >> v_chroma_shift) *
s->last_picture_ptr->f.linesize[1]);
memset(s->last_picture_ptr->f.data[2], 0x80,
(avctx->height >> v_chroma_shift) *
s->last_picture_ptr->f.linesize[2]);
ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
}
if ((s->next_picture_ptr == NULL ||
s->next_picture_ptr->f.data[0] == NULL) &&
s->pict_type == AV_PICTURE_TYPE_B) {
/* Allocate a dummy frame */
i = ff_find_unused_picture(s, 0);
if (i < 0) {
av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
return i;
}
s->next_picture_ptr = &s->picture[i];
if (ff_alloc_picture(s, s->next_picture_ptr, 0) < 0) {
s->next_picture_ptr = NULL;
return -1;
}
ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
}
if (s->last_picture_ptr) {
ff_mpeg_unref_picture(s, &s->last_picture);
if (s->last_picture_ptr->f.data[0] &&
(ret = ff_mpeg_ref_picture(s, &s->last_picture,
s->last_picture_ptr)) < 0)
return ret;
}
if (s->next_picture_ptr) {
ff_mpeg_unref_picture(s, &s->next_picture);
if (s->next_picture_ptr->f.data[0] &&
(ret = ff_mpeg_ref_picture(s, &s->next_picture,
s->next_picture_ptr)) < 0)
return ret;
}
if (s->pict_type != AV_PICTURE_TYPE_I &&
!(s->last_picture_ptr && s->last_picture_ptr->f.data[0])) {
av_log(s, AV_LOG_ERROR,
"Non-reference picture received and no reference available\n");
return AVERROR_INVALIDDATA;
}
if (s->picture_structure!= PICT_FRAME) {
int i;
for (i = 0; i < 4; i++) {
if (s->picture_structure == PICT_BOTTOM_FIELD) {
s->current_picture.f.data[i] +=
s->current_picture.f.linesize[i];
}
s->current_picture.f.linesize[i] *= 2;
s->last_picture.f.linesize[i] *= 2;
s->next_picture.f.linesize[i] *= 2;
}
}
s->err_recognition = avctx->err_recognition;
/* set dequantizer, we can't do it during init as
* it might change for mpeg4 and we can't do it in the header
* decode as init is not called for mpeg4 there yet */
if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
} else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
} else {
s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
}
if (s->dct_error_sum) {
assert(s->avctx->noise_reduction && s->encoding);
update_noise_reduction(s);
}
#if FF_API_XVMC
FF_DISABLE_DEPRECATION_WARNINGS
if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
return ff_xvmc_field_start(s, avctx);
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_XVMC */
return 0;
}
/* generic function for encode/decode called after a
* frame has been coded/decoded. */
void ff_MPV_frame_end(MpegEncContext *s)
{
int i;
#if FF_API_XVMC
FF_DISABLE_DEPRECATION_WARNINGS
/* redraw edges for the frame if decoding didn't complete */
// just to make sure that all data is rendered.
if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) {
ff_xvmc_field_end(s);
} else
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_XVMC */
if ((s->er.error_count || s->encoding) &&
!s->avctx->hwaccel &&
s->unrestricted_mv &&
s->current_picture.reference &&
!s->intra_only &&
!(s->flags & CODEC_FLAG_EMU_EDGE)) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
int hshift = desc->log2_chroma_w;
int vshift = desc->log2_chroma_h;
s->dsp.draw_edges(s->current_picture.f.data[0], s->linesize,
s->h_edge_pos, s->v_edge_pos,
EDGE_WIDTH, EDGE_WIDTH,
EDGE_TOP | EDGE_BOTTOM);
s->dsp.draw_edges(s->current_picture.f.data[1], s->uvlinesize,
s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
EDGE_TOP | EDGE_BOTTOM);
s->dsp.draw_edges(s->current_picture.f.data[2], s->uvlinesize,
s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
EDGE_TOP | EDGE_BOTTOM);
}
emms_c();
s->last_pict_type = s->pict_type;
s->last_lambda_for [s->pict_type] = s->current_picture_ptr->f.quality;
if (s->pict_type!= AV_PICTURE_TYPE_B) {
s->last_non_b_pict_type = s->pict_type;
}
#if 0
/* copy back current_picture variables */
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (s->picture[i].f.data[0] == s->current_picture.f.data[0]) {
s->picture[i] = s->current_picture;
break;
}
}
assert(i < MAX_PICTURE_COUNT);
#endif
if (s->encoding) {
/* release non-reference frames */
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (!s->picture[i].reference)
ff_mpeg_unref_picture(s, &s->picture[i]);
}
}
// clear copies, to avoid confusion
#if 0
memset(&s->last_picture, 0, sizeof(Picture));
memset(&s->next_picture, 0, sizeof(Picture));
memset(&s->current_picture, 0, sizeof(Picture));
#endif
s->avctx->coded_frame = &s->current_picture_ptr->f;
if (s->current_picture.reference)
ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
}
/**
* Print debugging info for the given picture.
*/
void ff_print_debug_info(MpegEncContext *s, Picture *p)
{
AVFrame *pict;
if (s->avctx->hwaccel || !p || !p->mb_type)
return;
pict = &p->f;
if (s->avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) {
int x,y;
av_log(s->avctx,AV_LOG_DEBUG,"New frame, type: ");
switch (pict->pict_type) {
case AV_PICTURE_TYPE_I:
av_log(s->avctx,AV_LOG_DEBUG,"I\n");
break;
case AV_PICTURE_TYPE_P:
av_log(s->avctx,AV_LOG_DEBUG,"P\n");
break;
case AV_PICTURE_TYPE_B:
av_log(s->avctx,AV_LOG_DEBUG,"B\n");
break;
case AV_PICTURE_TYPE_S:
av_log(s->avctx,AV_LOG_DEBUG,"S\n");
break;
case AV_PICTURE_TYPE_SI:
av_log(s->avctx,AV_LOG_DEBUG,"SI\n");
break;
case AV_PICTURE_TYPE_SP:
av_log(s->avctx,AV_LOG_DEBUG,"SP\n");
break;
}
for (y = 0; y < s->mb_height; y++) {
for (x = 0; x < s->mb_width; x++) {
if (s->avctx->debug & FF_DEBUG_SKIP) {
int count = s->mbskip_table[x + y * s->mb_stride];
if (count > 9)
count = 9;
av_log(s->avctx, AV_LOG_DEBUG, "%1d", count);
}
if (s->avctx->debug & FF_DEBUG_QP) {
av_log(s->avctx, AV_LOG_DEBUG, "%2d",
p->qscale_table[x + y * s->mb_stride]);
}
if (s->avctx->debug & FF_DEBUG_MB_TYPE) {
int mb_type = p->mb_type[x + y * s->mb_stride];
// Type & MV direction
if (IS_PCM(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "P");
else if (IS_INTRA(mb_type) && IS_ACPRED(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "A");
else if (IS_INTRA4x4(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "i");
else if (IS_INTRA16x16(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "I");
else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "d");
else if (IS_DIRECT(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "D");
else if (IS_GMC(mb_type) && IS_SKIP(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "g");
else if (IS_GMC(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "G");
else if (IS_SKIP(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "S");
else if (!USES_LIST(mb_type, 1))
av_log(s->avctx, AV_LOG_DEBUG, ">");
else if (!USES_LIST(mb_type, 0))
av_log(s->avctx, AV_LOG_DEBUG, "<");
else {
assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
av_log(s->avctx, AV_LOG_DEBUG, "X");
}
// segmentation
if (IS_8X8(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "+");
else if (IS_16X8(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "-");
else if (IS_8X16(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "|");
else if (IS_INTRA(mb_type) || IS_16X16(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, " ");
else
av_log(s->avctx, AV_LOG_DEBUG, "?");
if (IS_INTERLACED(mb_type))
av_log(s->avctx, AV_LOG_DEBUG, "=");
else
av_log(s->avctx, AV_LOG_DEBUG, " ");
}
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
}
}
/**
* find the lowest MB row referenced in the MVs
*/
int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir)
{
int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
int my, off, i, mvs;
if (s->picture_structure != PICT_FRAME || s->mcsel)
goto unhandled;
switch (s->mv_type) {
case MV_TYPE_16X16:
mvs = 1;
break;
case MV_TYPE_16X8:
mvs = 2;
break;
case MV_TYPE_8X8:
mvs = 4;
break;
default:
goto unhandled;
}
for (i = 0; i < mvs; i++) {
my = s->mv[dir][i][1]<<qpel_shift;
my_max = FFMAX(my_max, my);
my_min = FFMIN(my_min, my);
}
off = (FFMAX(-my_min, my_max) + 63) >> 6;
return FFMIN(FFMAX(s->mb_y + off, 0), s->mb_height-1);
unhandled:
return s->mb_height-1;
}
/* put block[] to dest[] */
static inline void put_dct(MpegEncContext *s,
int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
{
s->dct_unquantize_intra(s, block, i, qscale);
s->dsp.idct_put (dest, line_size, block);
}
/* add block[] to dest[] */
static inline void add_dct(MpegEncContext *s,
int16_t *block, int i, uint8_t *dest, int line_size)
{
if (s->block_last_index[i] >= 0) {
s->dsp.idct_add (dest, line_size, block);
}
}
static inline void add_dequant_dct(MpegEncContext *s,
int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
{
if (s->block_last_index[i] >= 0) {
s->dct_unquantize_inter(s, block, i, qscale);
s->dsp.idct_add (dest, line_size, block);
}
}
/**
* Clean dc, ac, coded_block for the current non-intra MB.
*/
void ff_clean_intra_table_entries(MpegEncContext *s)
{
int wrap = s->b8_stride;
int xy = s->block_index[0];
s->dc_val[0][xy ] =
s->dc_val[0][xy + 1 ] =
s->dc_val[0][xy + wrap] =
s->dc_val[0][xy + 1 + wrap] = 1024;
/* ac pred */
memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
if (s->msmpeg4_version>=3) {
s->coded_block[xy ] =
s->coded_block[xy + 1 ] =
s->coded_block[xy + wrap] =
s->coded_block[xy + 1 + wrap] = 0;
}
/* chroma */
wrap = s->mb_stride;
xy = s->mb_x + s->mb_y * wrap;
s->dc_val[1][xy] =
s->dc_val[2][xy] = 1024;
/* ac pred */
memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
s->mbintra_table[xy]= 0;
}
/* generic function called after a macroblock has been parsed by the
decoder or after it has been encoded by the encoder.
Important variables used:
s->mb_intra : true if intra macroblock
s->mv_dir : motion vector direction
s->mv_type : motion vector type
s->mv : motion vector
s->interlaced_dct : true if interlaced dct used (mpeg2)
*/
static av_always_inline
void MPV_decode_mb_internal(MpegEncContext *s, int16_t block[12][64],
int is_mpeg12)
{
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
#if FF_API_XVMC
FF_DISABLE_DEPRECATION_WARNINGS
if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
ff_xvmc_decode_mb(s);//xvmc uses pblocks
return;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_XVMC */
if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
/* print DCT coefficients */
int i,j;
av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
for(i=0; i<6; i++){
for(j=0; j<64; j++){
av_log(s->avctx, AV_LOG_DEBUG, "%5d", block[i][s->dsp.idct_permutation[j]]);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
}
s->current_picture.qscale_table[mb_xy] = s->qscale;
/* update DC predictors for P macroblocks */
if (!s->mb_intra) {
if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
if(s->mbintra_table[mb_xy])
ff_clean_intra_table_entries(s);
} else {
s->last_dc[0] =
s->last_dc[1] =
s->last_dc[2] = 128 << s->intra_dc_precision;
}
}
else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
s->mbintra_table[mb_xy]=1;
if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==AV_PICTURE_TYPE_B) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
uint8_t *dest_y, *dest_cb, *dest_cr;
int dct_linesize, dct_offset;
op_pixels_func (*op_pix)[4];
qpel_mc_func (*op_qpix)[16];
const int linesize = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
const int uvlinesize = s->current_picture.f.linesize[1];
const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band;
const int block_size = 8;
/* avoid copy if macroblock skipped in last frame too */
/* skip only during decoding as we might trash the buffers during encoding a bit */
if(!s->encoding){
uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
if (s->mb_skipped) {
s->mb_skipped= 0;
assert(s->pict_type!=AV_PICTURE_TYPE_I);
*mbskip_ptr = 1;
} else if(!s->current_picture.reference) {
*mbskip_ptr = 1;
} else{
*mbskip_ptr = 0; /* not skipped */
}
}
dct_linesize = linesize << s->interlaced_dct;
dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
if(readable){
dest_y= s->dest[0];
dest_cb= s->dest[1];
dest_cr= s->dest[2];
}else{
dest_y = s->b_scratchpad;
dest_cb= s->b_scratchpad+16*linesize;
dest_cr= s->b_scratchpad+32*linesize;
}
if (!s->mb_intra) {
/* motion handling */
/* decoding or more than one mb_type (MC was already done otherwise) */
if(!s->encoding){
if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
if (s->mv_dir & MV_DIR_FORWARD) {
ff_thread_await_progress(&s->last_picture_ptr->tf,
ff_MPV_lowest_referenced_row(s, 0),
0);
}
if (s->mv_dir & MV_DIR_BACKWARD) {
ff_thread_await_progress(&s->next_picture_ptr->tf,
ff_MPV_lowest_referenced_row(s, 1),
0);
}
}
op_qpix= s->me.qpel_put;
if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
op_pix = s->hdsp.put_pixels_tab;
}else{
op_pix = s->hdsp.put_no_rnd_pixels_tab;
}
if (s->mv_dir & MV_DIR_FORWARD) {
ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f.data, op_pix, op_qpix);
op_pix = s->hdsp.avg_pixels_tab;
op_qpix= s->me.qpel_avg;
}
if (s->mv_dir & MV_DIR_BACKWARD) {
ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f.data, op_pix, op_qpix);
}
}
/* skip dequant / idct if we are really late ;) */
if(s->avctx->skip_idct){
if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
|| s->avctx->skip_idct >= AVDISCARD_ALL)
goto skip_idct;
}
/* add dct residue */
if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
|| (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
if (s->chroma_y_shift){
add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
}else{
dct_linesize >>= 1;
dct_offset >>=1;
add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
}
}
} else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
add_dct(s, block[0], 0, dest_y , dct_linesize);
add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
if(s->chroma_y_shift){//Chroma420
add_dct(s, block[4], 4, dest_cb, uvlinesize);
add_dct(s, block[5], 5, dest_cr, uvlinesize);
}else{
//chroma422
dct_linesize = uvlinesize << s->interlaced_dct;
dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8;
add_dct(s, block[4], 4, dest_cb, dct_linesize);
add_dct(s, block[5], 5, dest_cr, dct_linesize);
add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
if(!s->chroma_x_shift){//Chroma444
add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
}
}
}//fi gray
}
else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
}
} else {
/* dct only in intra block */
if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
if(s->chroma_y_shift){
put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
}else{
dct_offset >>=1;
dct_linesize >>=1;
put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
}
}
}else{
s->dsp.idct_put(dest_y , dct_linesize, block[0]);
s->dsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
s->dsp.idct_put(dest_y + dct_offset , dct_linesize, block[2]);
s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
if(s->chroma_y_shift){
s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
}else{
dct_linesize = uvlinesize << s->interlaced_dct;
dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8;
s->dsp.idct_put(dest_cb, dct_linesize, block[4]);
s->dsp.idct_put(dest_cr, dct_linesize, block[5]);
s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
if(!s->chroma_x_shift){//Chroma444
s->dsp.idct_put(dest_cb + 8, dct_linesize, block[8]);
s->dsp.idct_put(dest_cr + 8, dct_linesize, block[9]);
s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
}
}
}//gray
}
}
skip_idct:
if(!readable){
s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
}
}
}
void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]){
#if !CONFIG_SMALL
if(s->out_format == FMT_MPEG1) {
MPV_decode_mb_internal(s, block, 1);
} else
#endif
MPV_decode_mb_internal(s, block, 0);
}
/**
* @param h is the normal height, this will be reduced automatically if needed for the last row
*/
void ff_draw_horiz_band(AVCodecContext *avctx, DSPContext *dsp, Picture *cur,
Picture *last, int y, int h, int picture_structure,
int first_field, int draw_edges, int low_delay,
int v_edge_pos, int h_edge_pos)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
int hshift = desc->log2_chroma_w;
int vshift = desc->log2_chroma_h;
const int field_pic = picture_structure != PICT_FRAME;
if(field_pic){
h <<= 1;
y <<= 1;
}
if (!avctx->hwaccel &&
draw_edges &&
cur->reference &&
!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
int *linesize = cur->f.linesize;
int sides = 0, edge_h;
if (y==0) sides |= EDGE_TOP;
if (y + h >= v_edge_pos)
sides |= EDGE_BOTTOM;
edge_h= FFMIN(h, v_edge_pos - y);
dsp->draw_edges(cur->f.data[0] + y * linesize[0],
linesize[0], h_edge_pos, edge_h,
EDGE_WIDTH, EDGE_WIDTH, sides);
dsp->draw_edges(cur->f.data[1] + (y >> vshift) * linesize[1],
linesize[1], h_edge_pos >> hshift, edge_h >> vshift,
EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift, sides);
dsp->draw_edges(cur->f.data[2] + (y >> vshift) * linesize[2],
linesize[2], h_edge_pos >> hshift, edge_h >> vshift,
EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift, sides);
}
h = FFMIN(h, avctx->height - y);
if(field_pic && first_field && !(avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
if (avctx->draw_horiz_band) {
AVFrame *src;
int offset[AV_NUM_DATA_POINTERS];
int i;
if(cur->f.pict_type == AV_PICTURE_TYPE_B || low_delay ||
(avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
src = &cur->f;
else if (last)
src = &last->f;
else
return;
if (cur->f.pict_type == AV_PICTURE_TYPE_B &&
picture_structure == PICT_FRAME &&
avctx->codec_id != AV_CODEC_ID_SVQ3) {
for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
offset[i] = 0;
}else{
offset[0]= y * src->linesize[0];
offset[1]=
offset[2]= (y >> vshift) * src->linesize[1];
for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
offset[i] = 0;
}
emms_c();
avctx->draw_horiz_band(avctx, src, offset,
y, picture_structure, h);
}
}
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
{
int draw_edges = s->unrestricted_mv && !s->intra_only;
ff_draw_horiz_band(s->avctx, &s->dsp, &s->current_picture,
&s->last_picture, y, h, s->picture_structure,
s->first_field, draw_edges, s->low_delay,
s->v_edge_pos, s->h_edge_pos);
}
void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
const int linesize = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
const int uvlinesize = s->current_picture.f.linesize[1];
const int mb_size= 4;
s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
//block_index is not used by mpeg2, so it is not affected by chroma_format
s->dest[0] = s->current_picture.f.data[0] + ((s->mb_x - 1) << mb_size);
s->dest[1] = s->current_picture.f.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
s->dest[2] = s->current_picture.f.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
{
if(s->picture_structure==PICT_FRAME){
s->dest[0] += s->mb_y * linesize << mb_size;
s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
}else{
s->dest[0] += (s->mb_y>>1) * linesize << mb_size;
s->dest[1] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
s->dest[2] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
assert((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD));
}
}
}
/**
* Permute an 8x8 block.
* @param block the block which will be permuted according to the given permutation vector
* @param permutation the permutation vector
* @param last the last non zero coefficient in scantable order, used to speed the permutation up
* @param scantable the used scantable, this is only used to speed the permutation up, the block is not
* (inverse) permutated to scantable order!
*/
void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
{
int i;
int16_t temp[64];
if(last<=0) return;
//if(permutation[1]==1) return; //FIXME it is ok but not clean and might fail for some permutations
for(i=0; i<=last; i++){
const int j= scantable[i];
temp[j]= block[j];
block[j]=0;
}
for(i=0; i<=last; i++){
const int j= scantable[i];
const int perm_j= permutation[j];
block[perm_j]= temp[j];
}
}
void ff_mpeg_flush(AVCodecContext *avctx){
int i;
MpegEncContext *s = avctx->priv_data;
if(s==NULL || s->picture==NULL)
return;
for (i = 0; i < MAX_PICTURE_COUNT; i++)
ff_mpeg_unref_picture(s, &s->picture[i]);
s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
ff_mpeg_unref_picture(s, &s->current_picture);
ff_mpeg_unref_picture(s, &s->last_picture);
ff_mpeg_unref_picture(s, &s->next_picture);
s->mb_x= s->mb_y= 0;
s->parse_context.state= -1;
s->parse_context.frame_start_found= 0;
s->parse_context.overread= 0;
s->parse_context.overread_index= 0;
s->parse_context.index= 0;
s->parse_context.last_index= 0;
s->bitstream_buffer_size=0;
s->pp_time=0;
}
static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, nCoeffs;
const uint16_t *quant_matrix;
nCoeffs= s->block_last_index[n];
if (n < 4)
block[0] = block[0] * s->y_dc_scale;
else
block[0] = block[0] * s->c_dc_scale;
/* XXX: only mpeg1 */
quant_matrix = s->intra_matrix;
for(i=1;i<=nCoeffs;i++) {
int j= s->intra_scantable.permutated[i];
level = block[j];
if (level) {
if (level < 0) {
level = -level;
level = (int)(level * qscale * quant_matrix[j]) >> 3;
level = (level - 1) | 1;
level = -level;
} else {
level = (int)(level * qscale * quant_matrix[j]) >> 3;
level = (level - 1) | 1;
}
block[j] = level;
}
}
}
static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, nCoeffs;
const uint16_t *quant_matrix;
nCoeffs= s->block_last_index[n];
quant_matrix = s->inter_matrix;
for(i=0; i<=nCoeffs; i++) {
int j= s->intra_scantable.permutated[i];
level = block[j];
if (level) {
if (level < 0) {
level = -level;
level = (((level << 1) + 1) * qscale *
((int) (quant_matrix[j]))) >> 4;
level = (level - 1) | 1;
level = -level;
} else {
level = (((level << 1) + 1) * qscale *
((int) (quant_matrix[j]))) >> 4;
level = (level - 1) | 1;
}
block[j] = level;
}
}
}
static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, nCoeffs;
const uint16_t *quant_matrix;
if(s->alternate_scan) nCoeffs= 63;
else nCoeffs= s->block_last_index[n];
if (n < 4)
block[0] = block[0] * s->y_dc_scale;
else
block[0] = block[0] * s->c_dc_scale;
quant_matrix = s->intra_matrix;
for(i=1;i<=nCoeffs;i++) {
int j= s->intra_scantable.permutated[i];
level = block[j];
if (level) {
if (level < 0) {
level = -level;
level = (int)(level * qscale * quant_matrix[j]) >> 3;
level = -level;
} else {
level = (int)(level * qscale * quant_matrix[j]) >> 3;
}
block[j] = level;
}
}
}
static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, nCoeffs;
const uint16_t *quant_matrix;
int sum=-1;
if(s->alternate_scan) nCoeffs= 63;
else nCoeffs= s->block_last_index[n];
if (n < 4)
block[0] = block[0] * s->y_dc_scale;
else
block[0] = block[0] * s->c_dc_scale;
quant_matrix = s->intra_matrix;
for(i=1;i<=nCoeffs;i++) {
int j= s->intra_scantable.permutated[i];
level = block[j];
if (level) {
if (level < 0) {
level = -level;
level = (int)(level * qscale * quant_matrix[j]) >> 3;
level = -level;
} else {
level = (int)(level * qscale * quant_matrix[j]) >> 3;
}
block[j] = level;
sum+=level;
}
}
block[63]^=sum&1;
}
static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, nCoeffs;
const uint16_t *quant_matrix;
int sum=-1;
if(s->alternate_scan) nCoeffs= 63;
else nCoeffs= s->block_last_index[n];
quant_matrix = s->inter_matrix;
for(i=0; i<=nCoeffs; i++) {
int j= s->intra_scantable.permutated[i];
level = block[j];
if (level) {
if (level < 0) {
level = -level;
level = (((level << 1) + 1) * qscale *
((int) (quant_matrix[j]))) >> 4;
level = -level;
} else {
level = (((level << 1) + 1) * qscale *
((int) (quant_matrix[j]))) >> 4;
}
block[j] = level;
sum+=level;
}
}
block[63]^=sum&1;
}
static void dct_unquantize_h263_intra_c(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, qmul, qadd;
int nCoeffs;
assert(s->block_last_index[n]>=0);
qmul = qscale << 1;
if (!s->h263_aic) {
if (n < 4)
block[0] = block[0] * s->y_dc_scale;
else
block[0] = block[0] * s->c_dc_scale;
qadd = (qscale - 1) | 1;
}else{
qadd = 0;
}
if(s->ac_pred)
nCoeffs=63;
else
nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
for(i=1; i<=nCoeffs; i++) {
level = block[i];
if (level) {
if (level < 0) {
level = level * qmul - qadd;
} else {
level = level * qmul + qadd;
}
block[i] = level;
}
}
}
static void dct_unquantize_h263_inter_c(MpegEncContext *s,
int16_t *block, int n, int qscale)
{
int i, level, qmul, qadd;
int nCoeffs;
assert(s->block_last_index[n]>=0);
qadd = (qscale - 1) | 1;
qmul = qscale << 1;
nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
for(i=0; i<=nCoeffs; i++) {
level = block[i];
if (level) {
if (level < 0) {
level = level * qmul - qadd;
} else {
level = level * qmul + qadd;
}
block[i] = level;
}
}
}
/**
* set qscale and update qscale dependent variables.
*/
void ff_set_qscale(MpegEncContext * s, int qscale)
{
if (qscale < 1)
qscale = 1;
else if (qscale > 31)
qscale = 31;
s->qscale = qscale;
s->chroma_qscale= s->chroma_qscale_table[qscale];
s->y_dc_scale= s->y_dc_scale_table[ qscale ];
s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
}
void ff_MPV_report_decode_progress(MpegEncContext *s)
{
if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
}
#if CONFIG_ERROR_RESILIENCE
void ff_mpeg_er_frame_start(MpegEncContext *s)
{
ERContext *er = &s->er;
er->cur_pic = s->current_picture_ptr;
er->last_pic = s->last_picture_ptr;
er->next_pic = s->next_picture_ptr;
er->pp_time = s->pp_time;
er->pb_time = s->pb_time;
er->quarter_sample = s->quarter_sample;
er->partitioned_frame = s->partitioned_frame;
ff_er_frame_start(er);
}
#endif /* CONFIG_ERROR_RESILIENCE */
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