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FFmpeg/libavcodec/mpegvideo.c
Ronald S. Bultje 89b81a1c88 mpegvideo: remove VLAs 
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-07-04 15:10:57 +03:00

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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/intmath.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "mpegvideo.h"
#include "mpegvideo_common.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "faandct.h"
#include "xvmc_internal.h"
#include "thread.h"
#include <limits.h>
//#undef NDEBUG
//#include <assert.h>
static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
static void dct_unquantize_h263_intra_c(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
static void dct_unquantize_h263_inter_c(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
/* enable all paranoid tests for rounding, overflows, etc... */
//#define PARANOID
//#define DEBUG
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 PixelFormat ff_pixfmt_list_420[] = {
PIX_FMT_YUV420P,
PIX_FMT_NONE
};
const enum PixelFormat ff_hwaccel_pixfmt_list_420[] = {
PIX_FMT_DXVA2_VLD,
PIX_FMT_VAAPI_VLD,
PIX_FMT_VDA_VLD,
PIX_FMT_YUV420P,
PIX_FMT_NONE
};
const uint8_t *avpriv_mpv_find_start_code(const uint8_t *restrict p,
const uint8_t *end,
uint32_t * restrict state)
{
int i;
assert(p <= end);
if (p >= end)
return end;
for (i = 0; i < 3; i++) {
uint32_t tmp = *state << 8;
*state = tmp + *(p++);
if (tmp == 0x100 || p == end)
return p;
}
while (p < end) {
if (p[-1] > 1 ) p += 3;
else if (p[-2] ) p += 2;
else if (p[-3]|(p[-1]-1)) p++;
else {
p++;
break;
}
}
p = FFMIN(p, end) - 4;
*state = AV_RB32(p);
return p + 4;
}
/* init common dct for both encoder and decoder */
av_cold int ff_dct_common_init(MpegEncContext *s)
{
ff_dsputil_init(&s->dsp, s->avctx);
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 HAVE_MMX
ff_MPV_common_init_mmx(s);
#elif ARCH_ALPHA
ff_MPV_common_init_axp(s);
#elif HAVE_MMI
ff_MPV_common_init_mmi(s);
#elif ARCH_ARM
ff_MPV_common_init_arm(s);
#elif HAVE_ALTIVEC
ff_MPV_common_init_altivec(s);
#elif ARCH_BFIN
ff_MPV_common_init_bfin(s);
#endif
/* 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;
}
void ff_copy_picture(Picture *dst, Picture *src)
{
*dst = *src;
dst->f.type = FF_BUFFER_TYPE_COPY;
}
/**
* Release a frame buffer
*/
static void free_frame_buffer(MpegEncContext *s, Picture *pic)
{
/* Windows Media Image codecs allocate internal buffers with different
* dimensions; ignore user defined callbacks for these
*/
if (s->codec_id != CODEC_ID_WMV3IMAGE && s->codec_id != CODEC_ID_VC1IMAGE)
ff_thread_release_buffer(s->avctx, &pic->f);
else
avcodec_default_release_buffer(s->avctx, &pic->f);
av_freep(&pic->f.hwaccel_picture_private);
}
/**
* Allocate a frame buffer
*/
static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
{
int r;
if (s->avctx->hwaccel) {
assert(!pic->f.hwaccel_picture_private);
if (s->avctx->hwaccel->priv_data_size) {
pic->f.hwaccel_picture_private = av_mallocz(s->avctx->hwaccel->priv_data_size);
if (!pic->f.hwaccel_picture_private) {
av_log(s->avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
return -1;
}
}
}
if (s->codec_id != CODEC_ID_WMV3IMAGE && s->codec_id != CODEC_ID_VC1IMAGE)
r = ff_thread_get_buffer(s->avctx, &pic->f);
else
r = avcodec_default_get_buffer(s->avctx, &pic->f);
if (r < 0 || !pic->f.type || !pic->f.data[0]) {
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %p)\n",
r, pic->f.type, pic->f.data[0]);
av_freep(&pic->f.hwaccel_picture_private);
return -1;
}
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");
free_frame_buffer(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");
free_frame_buffer(s, pic);
return -1;
}
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)
{
const int big_mb_num = s->mb_stride * (s->mb_height + 1) + 1;
// the + 1 is needed so memset(,,stride*height) does not sig11
const int mb_array_size = s->mb_stride * s->mb_height;
const int b8_array_size = s->b8_stride * s->mb_height * 2;
const int b4_array_size = s->b4_stride * s->mb_height * 4;
int i;
int r = -1;
if (shared) {
assert(pic->f.data[0]);
assert(pic->f.type == 0 || pic->f.type == FF_BUFFER_TYPE_SHARED);
pic->f.type = FF_BUFFER_TYPE_SHARED;
} 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->f.qscale_table == NULL) {
if (s->encoding) {
FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_var,
mb_array_size * sizeof(int16_t), fail)
FF_ALLOCZ_OR_GOTO(s->avctx, pic->mc_mb_var,
mb_array_size * sizeof(int16_t), fail)
FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_mean,
mb_array_size * sizeof(int8_t ), fail)
}
FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.mbskip_table,
mb_array_size * sizeof(uint8_t) + 2, fail)// the + 2 is for the slice end check
FF_ALLOCZ_OR_GOTO(s->avctx, pic->qscale_table_base,
(big_mb_num + s->mb_stride) * sizeof(uint8_t),
fail)
FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_type_base,
(big_mb_num + s->mb_stride) * sizeof(uint32_t),
fail)
pic->f.mb_type = pic->mb_type_base + 2 * s->mb_stride + 1;
pic->f.qscale_table = pic->qscale_table_base + 2 * s->mb_stride + 1;
if (s->out_format == FMT_H264) {
for (i = 0; i < 2; i++) {
FF_ALLOCZ_OR_GOTO(s->avctx, pic->motion_val_base[i],
2 * (b4_array_size + 4) * sizeof(int16_t),
fail)
pic->f.motion_val[i] = pic->motion_val_base[i] + 4;
FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.ref_index[i],
4 * mb_array_size * sizeof(uint8_t), fail)
}
pic->f.motion_subsample_log2 = 2;
} else if (s->out_format == FMT_H263 || s->encoding ||
(s->avctx->debug & FF_DEBUG_MV) || s->avctx->debug_mv) {
for (i = 0; i < 2; i++) {
FF_ALLOCZ_OR_GOTO(s->avctx, pic->motion_val_base[i],
2 * (b8_array_size + 4) * sizeof(int16_t),
fail)
pic->f.motion_val[i] = pic->motion_val_base[i] + 4;
FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.ref_index[i],
4 * mb_array_size * sizeof(uint8_t), fail)
}
pic->f.motion_subsample_log2 = 3;
}
if (s->avctx->debug&FF_DEBUG_DCT_COEFF) {
FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.dct_coeff,
64 * mb_array_size * sizeof(DCTELEM) * 6, fail)
}
pic->f.qstride = s->mb_stride;
FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.pan_scan,
1 * sizeof(AVPanScan), fail)
}
pic->owner2 = s;
return 0;
fail: // for the FF_ALLOCZ_OR_GOTO macro
if (r >= 0)
free_frame_buffer(s, pic);
return -1;
}
/**
* Deallocate a picture.
*/
static void free_picture(MpegEncContext *s, Picture *pic)
{
int i;
if (pic->f.data[0] && pic->f.type != FF_BUFFER_TYPE_SHARED) {
free_frame_buffer(s, pic);
}
av_freep(&pic->mb_var);
av_freep(&pic->mc_mb_var);
av_freep(&pic->mb_mean);
av_freep(&pic->f.mbskip_table);
av_freep(&pic->qscale_table_base);
av_freep(&pic->mb_type_base);
av_freep(&pic->f.dct_coeff);
av_freep(&pic->f.pan_scan);
pic->f.mb_type = NULL;
for (i = 0; i < 2; i++) {
av_freep(&pic->motion_val_base[i]);
av_freep(&pic->f.ref_index[i]);
}
if (pic->f.type == FF_BUFFER_TYPE_SHARED) {
for (i = 0; i < 4; i++) {
pic->f.base[i] =
pic->f.data[i] = NULL;
}
pic->f.type = 0;
}
}
static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base)
{
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;
// edge emu needs blocksize + filter length - 1
// (= 17x17 for halfpel / 21x21 for h264)
FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer,
(s->width + 64) * 2 * 21 * 2, fail); // (width + edge + align)*interlaced*MBsize*tolerance
// FIXME should be linesize instead of s->width * 2
// but that is not known before get_buffer()
FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad,
(s->width + 64) * 4 * 16 * 2 * sizeof(uint8_t), 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;
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(DCTELEM), 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
}
void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
{
MpegEncContext bak;
int i;
// 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];
}
// STOP_TIMER("update_duplicate_context")
// about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
}
int ff_mpeg_update_thread_context(AVCodecContext *dst,
const AVCodecContext *src)
{
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->picture_range_start += MAX_PICTURE_COUNT;
s->picture_range_end += MAX_PICTURE_COUNT;
s->bitstream_buffer = NULL;
s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
ff_MPV_common_init(s);
}
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;
memcpy(s->picture, s1->picture, s1->picture_count * sizeof(Picture));
memcpy(&s->last_picture, &s1->last_picture,
(char *) &s1->last_picture_ptr - (char *) &s1->last_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->dropable = s1->dropable;
// 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);
}
// 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->picture_range_start = 0;
s->picture_range_end = MAX_PICTURE_COUNT;
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);
}
/**
* 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 y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
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 == CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
s->mb_height = (s->height + 31) / 32 * 2;
else if (s->codec_id != CODEC_ID_H264)
s->mb_height = (s->height + 15) / 16;
if (s->avctx->pix_fmt == PIX_FMT_NONE) {
av_log(s->avctx, AV_LOG_ERROR,
"decoding to 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;
if (s->width && s->height) {
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 chroma shifts */
avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &s->chroma_x_shift,
&s->chroma_y_shift);
/* 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;
/* 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);
s->avctx->coded_frame = &s->current_picture.f;
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;
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);
/* 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_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_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);
}
}
s->picture_count = MAX_PICTURE_COUNT * FFMAX(1, s->avctx->thread_count);
FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
s->picture_count * sizeof(Picture), fail);
for (i = 0; i < s->picture_count; i++) {
avcodec_get_frame_defaults(&s->picture[i].f);
}
if (s->width && s->height) {
FF_ALLOC_OR_GOTO(s->avctx, s->er_temp_buffer,
mb_array_size * sizeof(uint8_t), fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->error_status_table,
mb_array_size * sizeof(uint8_t), fail);
if (s->codec_id == 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
s->parse_context.state = -1;
if ((s->avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) ||
s->avctx->debug_mv) {
s->visualization_buffer[0] = av_malloc((s->mb_width * 16 +
2 * EDGE_WIDTH) * s->mb_height * 16 + 2 * EDGE_WIDTH);
s->visualization_buffer[1] = av_malloc((s->mb_width * 16 +
2 * EDGE_WIDTH) * s->mb_height * 16 + 2 * EDGE_WIDTH);
s->visualization_buffer[2] = av_malloc((s->mb_width * 16 +
2 * EDGE_WIDTH) * s->mb_height * 16 + 2 * EDGE_WIDTH);
}
}
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], s) < 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, 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;
}
/* init common structure for both encoder and decoder */
void ff_MPV_common_end(MpegEncContext *s)
{
int i, j, k;
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->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->bitstream_buffer);
s->allocated_bitstream_buffer_size = 0;
av_freep(&s->avctx->stats_out);
av_freep(&s->ac_stats);
av_freep(&s->error_status_table);
av_freep(&s->er_temp_buffer);
av_freep(&s->mb_index2xy);
av_freep(&s->lambda_table);
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);
av_freep(&s->cplx_tab);
av_freep(&s->bits_tab);
if (s->picture && !s->avctx->internal->is_copy) {
for (i = 0; i < s->picture_count; i++) {
free_picture(s, &s->picture[i]);
}
}
av_freep(&s->picture);
s->context_initialized = 0;
s->last_picture_ptr =
s->next_picture_ptr =
s->current_picture_ptr = NULL;
s->linesize = s->uvlinesize = 0;
for (i = 0; i < 3; i++)
av_freep(&s->visualization_buffer[i]);
if (!(s->avctx->active_thread_type & FF_THREAD_FRAME))
avcodec_default_free_buffers(s->avctx);
}
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);
}
}
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 < s->picture_count; i++) {
if (s->picture[i].f.data[0] && !s->picture[i].f.reference &&
(!s->picture[i].owner2 || s->picture[i].owner2 == s) &&
(remove_current || &s->picture[i] != s->current_picture_ptr)
/* && s->picture[i].type!= FF_BUFFER_TYPE_SHARED */) {
free_frame_buffer(s, &s->picture[i]);
}
}
}
int ff_find_unused_picture(MpegEncContext *s, int shared)
{
int i;
if (shared) {
for (i = s->picture_range_start; i < s->picture_range_end; i++) {
if (s->picture[i].f.data[0] == NULL && s->picture[i].f.type == 0)
return i;
}
} else {
for (i = s->picture_range_start; i < s->picture_range_end; i++) {
if (s->picture[i].f.data[0] == NULL && s->picture[i].f.type != 0)
return i; // FIXME
}
for (i = s->picture_range_start; i < s->picture_range_end; i++) {
if (s->picture[i].f.data[0] == NULL)
return i;
}
}
return AVERROR_INVALIDDATA;
}
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;
Picture *pic;
s->mb_skipped = 0;
assert(s->last_picture_ptr == NULL || s->out_format != FMT_H264 ||
s->codec_id == CODEC_ID_SVQ3);
/* mark & release old frames */
if (s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3) {
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]) {
if (s->last_picture_ptr->owner2 == s)
free_frame_buffer(s, s->last_picture_ptr);
}
/* release forgotten pictures */
/* if (mpeg124/h263) */
if (!s->encoding) {
for (i = 0; i < s->picture_count; i++) {
if (s->picture[i].owner2 == s && s->picture[i].f.data[0] &&
&s->picture[i] != s->last_picture_ptr &&
&s->picture[i] != s->next_picture_ptr &&
s->picture[i].f.reference) {
if (!(avctx->active_thread_type & FF_THREAD_FRAME))
av_log(avctx, AV_LOG_ERROR,
"releasing zombie picture\n");
free_frame_buffer(s, &s->picture[i]);
}
}
}
}
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);
pic = &s->picture[i];
}
pic->f.reference = 0;
if (!s->dropable) {
if (s->codec_id == CODEC_ID_H264)
pic->f.reference = s->picture_structure;
else if (s->pict_type != AV_PICTURE_TYPE_B)
pic->f.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 == CODEC_ID_MPEG1VIDEO ||
s->codec_id == 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;
ff_copy_picture(&s->current_picture, s->current_picture_ptr);
if (s->pict_type != AV_PICTURE_TYPE_B) {
s->last_picture_ptr = s->next_picture_ptr;
if (!s->dropable)
s->next_picture_ptr = s->current_picture_ptr;
}
/* av_log(s->avctx, AV_LOG_DEBUG, "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->dropable); */
if (s->codec_id != CODEC_ID_H264) {
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)) {
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);
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;
}
ff_thread_report_progress(&s->last_picture_ptr->f, INT_MAX, 0);
ff_thread_report_progress(&s->last_picture_ptr->f, INT_MAX, 1);
s->last_picture_ptr->f.reference = 3;
}
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);
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->f, INT_MAX, 0);
ff_thread_report_progress(&s->next_picture_ptr->f, INT_MAX, 1);
s->next_picture_ptr->f.reference = 3;
}
}
if (s->last_picture_ptr)
ff_copy_picture(&s->last_picture, s->last_picture_ptr);
if (s->next_picture_ptr)
ff_copy_picture(&s->next_picture, s->next_picture_ptr);
if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME) &&
(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3)) {
if (s->next_picture_ptr)
s->next_picture_ptr->owner2 = s;
if (s->last_picture_ptr)
s->last_picture_ptr->owner2 = s;
}
assert(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
s->last_picture_ptr->f.data[0]));
if (s->picture_structure!= PICT_FRAME && s->out_format != FMT_H264) {
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 == 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 (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
return ff_xvmc_field_start(s, avctx);
return 0;
}
/* generic function for encode/decode called after a
* frame has been coded/decoded. */
void ff_MPV_frame_end(MpegEncContext *s)
{
int i;
/* 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 if ((s->error_count || s->encoding) &&
!s->avctx->hwaccel &&
!(s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) &&
s->unrestricted_mv &&
s->current_picture.f.reference &&
!s->intra_only &&
!(s->flags & CODEC_FLAG_EMU_EDGE)) {
int hshift = av_pix_fmt_descriptors[s->avctx->pix_fmt].log2_chroma_w;
int vshift = av_pix_fmt_descriptors[s->avctx->pix_fmt].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 < s->picture_count; i++) {
if (s->picture[i].f.data[0] && !s->picture[i].f.reference
/* && s->picture[i].type != FF_BUFFER_TYPE_SHARED */) {
free_frame_buffer(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->codec_id != CODEC_ID_H264 && s->current_picture.f.reference) {
ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX, 0);
}
}
/**
* Draw a line from (ex, ey) -> (sx, sy).
* @param w width of the image
* @param h height of the image
* @param stride stride/linesize of the image
* @param color color of the arrow
*/
static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey,
int w, int h, int stride, int color)
{
int x, y, fr, f;
sx = av_clip(sx, 0, w - 1);
sy = av_clip(sy, 0, h - 1);
ex = av_clip(ex, 0, w - 1);
ey = av_clip(ey, 0, h - 1);
buf[sy * stride + sx] += color;
if (FFABS(ex - sx) > FFABS(ey - sy)) {
if (sx > ex) {
FFSWAP(int, sx, ex);
FFSWAP(int, sy, ey);
}
buf += sx + sy * stride;
ex -= sx;
f = ((ey - sy) << 16) / ex;
for (x = 0; x = ex; x++) {
y = (x * f) >> 16;
fr = (x * f) & 0xFFFF;
buf[y * stride + x] += (color * (0x10000 - fr)) >> 16;
buf[(y + 1) * stride + x] += (color * fr ) >> 16;
}
} else {
if (sy > ey) {
FFSWAP(int, sx, ex);
FFSWAP(int, sy, ey);
}
buf += sx + sy * stride;
ey -= sy;
if (ey)
f = ((ex - sx) << 16) / ey;
else
f = 0;
for (y = 0; y = ey; y++) {
x = (y * f) >> 16;
fr = (y * f) & 0xFFFF;
buf[y * stride + x] += (color * (0x10000 - fr)) >> 16;
buf[y * stride + x + 1] += (color * fr ) >> 16;
}
}
}
/**
* Draw an arrow from (ex, ey) -> (sx, sy).
* @param w width of the image
* @param h height of the image
* @param stride stride/linesize of the image
* @param color color of the arrow
*/
static void draw_arrow(uint8_t *buf, int sx, int sy, int ex,
int ey, int w, int h, int stride, int color)
{
int dx,dy;
sx = av_clip(sx, -100, w + 100);
sy = av_clip(sy, -100, h + 100);
ex = av_clip(ex, -100, w + 100);
ey = av_clip(ey, -100, h + 100);
dx = ex - sx;
dy = ey - sy;
if (dx * dx + dy * dy > 3 * 3) {
int rx = dx + dy;
int ry = -dx + dy;
int length = ff_sqrt((rx * rx + ry * ry) << 8);
// FIXME subpixel accuracy
rx = ROUNDED_DIV(rx * 3 << 4, length);
ry = ROUNDED_DIV(ry * 3 << 4, length);
draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color);
draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color);
}
draw_line(buf, sx, sy, ex, ey, w, h, stride, color);
}
/**
* Print debugging info for the given picture.
*/
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict)
{
if (s->avctx->hwaccel || !pict || !pict->mb_type)
return;
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",
pict->qscale_table[x + y * s->mb_stride]);
}
if (s->avctx->debug & FF_DEBUG_MB_TYPE) {
int mb_type = pict->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, " ");
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
}
if ((s->avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) ||
(s->avctx->debug_mv)) {
const int shift = 1 + s->quarter_sample;
int mb_y;
uint8_t *ptr;
int i;
int h_chroma_shift, v_chroma_shift, block_height;
const int width = s->avctx->width;
const int height = s->avctx->height;
const int mv_sample_log2 = 4 - pict->motion_subsample_log2;
const int mv_stride = (s->mb_width << mv_sample_log2) +
(s->codec_id == CODEC_ID_H264 ? 0 : 1);
s->low_delay = 0; // needed to see the vectors without trashing the buffers
avcodec_get_chroma_sub_sample(s->avctx->pix_fmt,
&h_chroma_shift, &v_chroma_shift);
for (i = 0; i < 3; i++) {
memcpy(s->visualization_buffer[i], pict->data[i],
(i == 0) ? pict->linesize[i] * height:
pict->linesize[i] * height >> v_chroma_shift);
pict->data[i] = s->visualization_buffer[i];
}
pict->type = FF_BUFFER_TYPE_COPY;
ptr = pict->data[0];
block_height = 16 >> v_chroma_shift;
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
int mb_x;
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
const int mb_index = mb_x + mb_y * s->mb_stride;
if ((s->avctx->debug_mv) && pict->motion_val) {
int type;
for (type = 0; type < 3; type++) {
int direction = 0;
switch (type) {
case 0:
if ((!(s->avctx->debug_mv & FF_DEBUG_VIS_MV_P_FOR)) ||
(pict->pict_type!= AV_PICTURE_TYPE_P))
continue;
direction = 0;
break;
case 1:
if ((!(s->avctx->debug_mv & FF_DEBUG_VIS_MV_B_FOR)) ||
(pict->pict_type!= AV_PICTURE_TYPE_B))
continue;
direction = 0;
break;
case 2:
if ((!(s->avctx->debug_mv & FF_DEBUG_VIS_MV_B_BACK)) ||
(pict->pict_type!= AV_PICTURE_TYPE_B))
continue;
direction = 1;
break;
}
if (!USES_LIST(pict->mb_type[mb_index], direction))
continue;
if (IS_8X8(pict->mb_type[mb_index])) {
int i;
for (i = 0; i < 4; i++) {
int sx = mb_x * 16 + 4 + 8 * (i & 1);
int sy = mb_y * 16 + 4 + 8 * (i >> 1);
int xy = (mb_x * 2 + (i & 1) +
(mb_y * 2 + (i >> 1)) * mv_stride) << (mv_sample_log2 - 1);
int mx = (pict->motion_val[direction][xy][0] >> shift) + sx;
int my = (pict->motion_val[direction][xy][1] >> shift) + sy;
draw_arrow(ptr, sx, sy, mx, my, width,
height, s->linesize, 100);
}
} else if (IS_16X8(pict->mb_type[mb_index])) {
int i;
for (i = 0; i < 2; i++) {
int sx = mb_x * 16 + 8;
int sy = mb_y * 16 + 4 + 8 * i;
int xy = (mb_x * 2 + (mb_y * 2 + i) * mv_stride) << (mv_sample_log2 - 1);
int mx = (pict->motion_val[direction][xy][0] >> shift);
int my = (pict->motion_val[direction][xy][1] >> shift);
if (IS_INTERLACED(pict->mb_type[mb_index]))
my *= 2;
draw_arrow(ptr, sx, sy, mx + sx, my + sy, width,
height, s->linesize, 100);
}
} else if (IS_8X16(pict->mb_type[mb_index])) {
int i;
for (i = 0; i < 2; i++) {
int sx = mb_x * 16 + 4 + 8 * i;
int sy = mb_y * 16 + 8;
int xy = (mb_x * 2 + i + mb_y * 2 * mv_stride) << (mv_sample_log2 - 1);
int mx = pict->motion_val[direction][xy][0] >> shift;
int my = pict->motion_val[direction][xy][1] >> shift;
if (IS_INTERLACED(pict->mb_type[mb_index]))
my *= 2;
draw_arrow(ptr, sx, sy, mx + sx, my + sy, width,
height, s->linesize, 100);
}
} else {
int sx = mb_x * 16 + 8;
int sy = mb_y * 16 + 8;
int xy = (mb_x + mb_y * mv_stride) << mv_sample_log2;
int mx = pict->motion_val[direction][xy][0] >> shift + sx;
int my = pict->motion_val[direction][xy][1] >> shift + sy;
draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
}
}
}
if ((s->avctx->debug & FF_DEBUG_VIS_QP) && pict->motion_val) {
uint64_t c = (pict->qscale_table[mb_index] * 128 / 31) *
0x0101010101010101ULL;
int y;
for (y = 0; y < block_height; y++) {
*(uint64_t *)(pict->data[1] + 8 * mb_x +
(block_height * mb_y + y) *
pict->linesize[1]) = c;
*(uint64_t *)(pict->data[2] + 8 * mb_x +
(block_height * mb_y + y) *
pict->linesize[2]) = c;
}
}
if ((s->avctx->debug & FF_DEBUG_VIS_MB_TYPE) &&
pict->motion_val) {
int mb_type = pict->mb_type[mb_index];
uint64_t u,v;
int y;
#define COLOR(theta, r) \
u = (int)(128 + r * cos(theta * 3.141592 / 180)); \
v = (int)(128 + r * sin(theta * 3.141592 / 180));
u = v = 128;
if (IS_PCM(mb_type)) {
COLOR(120, 48)
} else if ((IS_INTRA(mb_type) && IS_ACPRED(mb_type)) ||
IS_INTRA16x16(mb_type)) {
COLOR(30, 48)
} else if (IS_INTRA4x4(mb_type)) {
COLOR(90, 48)
} else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type)) {
// COLOR(120, 48)
} else if (IS_DIRECT(mb_type)) {
COLOR(150, 48)
} else if (IS_GMC(mb_type) && IS_SKIP(mb_type)) {
COLOR(170, 48)
} else if (IS_GMC(mb_type)) {
COLOR(190, 48)
} else if (IS_SKIP(mb_type)) {
// COLOR(180, 48)
} else if (!USES_LIST(mb_type, 1)) {
COLOR(240, 48)
} else if (!USES_LIST(mb_type, 0)) {
COLOR(0, 48)
} else {
assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
COLOR(300,48)
}
u *= 0x0101010101010101ULL;
v *= 0x0101010101010101ULL;
for (y = 0; y < block_height; y++) {
*(uint64_t *)(pict->data[1] + 8 * mb_x +
(block_height * mb_y + y) * pict->linesize[1]) = u;
*(uint64_t *)(pict->data[2] + 8 * mb_x +
(block_height * mb_y + y) * pict->linesize[2]) = v;
}
// segmentation
if (IS_8X8(mb_type) || IS_16X8(mb_type)) {
*(uint64_t *)(pict->data[0] + 16 * mb_x + 0 +
(16 * mb_y + 8) * pict->linesize[0]) ^= 0x8080808080808080ULL;
*(uint64_t *)(pict->data[0] + 16 * mb_x + 8 +
(16 * mb_y + 8) * pict->linesize[0]) ^= 0x8080808080808080ULL;
}
if (IS_8X8(mb_type) || IS_8X16(mb_type)) {
for (y = 0; y < 16; y++)
pict->data[0][16 * mb_x + 8 + (16 * mb_y + y) *
pict->linesize[0]] ^= 0x80;
}
if (IS_8X8(mb_type) && mv_sample_log2 >= 2) {
int dm = 1 << (mv_sample_log2 - 2);
for (i = 0; i < 4; i++) {
int sx = mb_x * 16 + 8 * (i & 1);
int sy = mb_y * 16 + 8 * (i >> 1);
int xy = (mb_x * 2 + (i & 1) +
(mb_y * 2 + (i >> 1)) * mv_stride) << (mv_sample_log2 - 1);
// FIXME bidir
int32_t *mv = (int32_t *) &pict->motion_val[0][xy];
if (mv[0] != mv[dm] ||
mv[dm * mv_stride] != mv[dm * (mv_stride + 1)])
for (y = 0; y < 8; y++)
pict->data[0][sx + 4 + (sy + y) * pict->linesize[0]] ^= 0x80;
if (mv[0] != mv[dm * mv_stride] || mv[dm] != mv[dm * (mv_stride + 1)])
*(uint64_t *)(pict->data[0] + sx + (sy + 4) *
pict->linesize[0]) ^= 0x8080808080808080ULL;
}
}
if (IS_INTERLACED(mb_type) &&
s->codec_id == CODEC_ID_H264) {
// hmm
}
}
s->mbskip_table[mb_index] = 0;
}
}
}
}
/**
* 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) 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,
DCTELEM *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,
DCTELEM *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,
DCTELEM *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, DCTELEM block[12][64],
int is_mpeg12)
{
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
ff_xvmc_decode_mb(s);//xvmc uses pblocks
return;
}
if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
/* save DCT coefficients */
int i,j;
DCTELEM *dct = &s->current_picture.f.dct_coeff[mb_xy * 64 * 6];
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++){
*dct++ = block[i][s->dsp.idct_permutation[j]];
av_log(s->avctx, AV_LOG_DEBUG, "%5d", dct[-1]);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
}
s->current_picture.f.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.f.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->f,
ff_MPV_lowest_referenced_row(s, 0),
0);
}
if (s->mv_dir & MV_DIR_BACKWARD) {
ff_thread_await_progress(&s->next_picture_ptr->f,
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->dsp.put_pixels_tab;
}else{
op_pix = s->dsp.put_no_rnd_pixels_tab;
}
if (s->mv_dir & MV_DIR_FORWARD) {
MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f.data, op_pix, op_qpix);
op_pix = s->dsp.avg_pixels_tab;
op_qpix= s->me.qpel_avg;
}
if (s->mv_dir & MV_DIR_BACKWARD) {
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==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO
|| (s->codec_id==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 != 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==CODEC_ID_MPEG1VIDEO || s->codec_id==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->dsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
s->dsp.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, DCTELEM 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(MpegEncContext *s, int y, int h){
const int field_pic= s->picture_structure != PICT_FRAME;
if(field_pic){
h <<= 1;
y <<= 1;
}
if (!s->avctx->hwaccel
&& !(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
&& s->unrestricted_mv
&& s->current_picture.f.reference
&& !s->intra_only
&& !(s->flags&CODEC_FLAG_EMU_EDGE)) {
int sides = 0, edge_h;
int hshift = av_pix_fmt_descriptors[s->avctx->pix_fmt].log2_chroma_w;
int vshift = av_pix_fmt_descriptors[s->avctx->pix_fmt].log2_chroma_h;
if (y==0) sides |= EDGE_TOP;
if (y + h >= s->v_edge_pos) sides |= EDGE_BOTTOM;
edge_h= FFMIN(h, s->v_edge_pos - y);
s->dsp.draw_edges(s->current_picture_ptr->f.data[0] + y *s->linesize,
s->linesize, s->h_edge_pos, edge_h,
EDGE_WIDTH, EDGE_WIDTH, sides);
s->dsp.draw_edges(s->current_picture_ptr->f.data[1] + (y>>vshift)*s->uvlinesize,
s->uvlinesize, s->h_edge_pos>>hshift, edge_h>>vshift,
EDGE_WIDTH>>hshift, EDGE_WIDTH>>vshift, sides);
s->dsp.draw_edges(s->current_picture_ptr->f.data[2] + (y>>vshift)*s->uvlinesize,
s->uvlinesize, s->h_edge_pos>>hshift, edge_h>>vshift,
EDGE_WIDTH>>hshift, EDGE_WIDTH>>vshift, sides);
}
h= FFMIN(h, s->avctx->height - y);
if(field_pic && s->first_field && !(s->avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
if (s->avctx->draw_horiz_band) {
AVFrame *src;
int offset[AV_NUM_DATA_POINTERS];
int i;
if(s->pict_type==AV_PICTURE_TYPE_B || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER))
src = &s->current_picture_ptr->f;
else if(s->last_picture_ptr)
src = &s->last_picture_ptr->f;
else
return;
if(s->pict_type==AV_PICTURE_TYPE_B && s->picture_structure == PICT_FRAME && s->out_format != FMT_H264){
for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
offset[i] = 0;
}else{
offset[0]= y * s->linesize;
offset[1]=
offset[2]= (y >> s->chroma_y_shift) * s->uvlinesize;
for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
offset[i] = 0;
}
emms_c();
s->avctx->draw_horiz_band(s->avctx, src, offset,
y, s->picture_structure, h);
}
}
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));
}
}
}
void ff_mpeg_flush(AVCodecContext *avctx){
int i;
MpegEncContext *s = avctx->priv_data;
if(s==NULL || s->picture==NULL)
return;
for(i=0; i<s->picture_count; i++){
if (s->picture[i].f.data[0] &&
(s->picture[i].f.type == FF_BUFFER_TYPE_INTERNAL ||
s->picture[i].f.type == FF_BUFFER_TYPE_USER))
free_frame_buffer(s, &s->picture[i]);
}
s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
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,
DCTELEM *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,
DCTELEM *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,
DCTELEM *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,
DCTELEM *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,
DCTELEM *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,
DCTELEM *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,
DCTELEM *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->error_occurred)
ff_thread_report_progress(&s->current_picture_ptr->f, s->mb_y, 0);
}
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