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ffmpeg-rockchip/libavcodec/mpegvideo.c
Luca Barbato 7d4a1ff344 mpegvideo: Fix undefined negative shifts in ff_init_block_index 
Found-by: gcc5-ubsan.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2016-03-05 08:26:36 -05:00

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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/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "idctdsp.h"
#include "internal.h"
#include "mathops.h"
#include "mpeg_er.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "mpegvideodata.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "qpeldsp.h"
#include "xvmc_internal.h"
#include "thread.h"
#include "wmv2.h"
#include <limits.h>
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;
}
}
}
/* init common dct for both encoder and decoder */
static av_cold int dct_init(MpegEncContext *s)
{
ff_blockdsp_init(&s->bdsp, s->avctx);
ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
ff_mpegvideodsp_init(&s->mdsp);
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->avctx->flags & AV_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_INTRINSICS_NEON)
ff_mpv_common_init_neon(s);
if (ARCH_ARM)
ff_mpv_common_init_arm(s);
if (ARCH_PPC)
ff_mpv_common_init_ppc(s);
if (ARCH_X86)
ff_mpv_common_init_x86(s);
return 0;
}
av_cold void ff_mpv_idct_init(MpegEncContext *s)
{
ff_idctdsp_init(&s->idsp, s->avctx);
/* load & permutate scantables
* note: only wmv uses different ones
*/
if (s->alternate_scan) {
ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
} else {
ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
}
ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
}
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
{
return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
s->chroma_x_shift, s->chroma_y_shift, s->out_format,
s->mb_stride, s->mb_height, s->b8_stride,
&s->linesize, &s->uvlinesize);
}
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->sc.edge_emu_buffer =
s->me.scratchpad =
s->me.temp =
s->sc.rd_scratchpad =
s->sc.b_scratchpad =
s->sc.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->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->avctx->codec_tag == AV_RL32("VCR2")) {
// exchange uv
int16_t (*tmp)[64];
tmp = s->pblocks[4];
s->pblocks[4] = s->pblocks[5];
s->pblocks[5] = tmp;
}
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)
return;
av_freep(&s->sc.edge_emu_buffer);
av_freep(&s->me.scratchpad);
s->me.temp =
s->sc.rd_scratchpad =
s->sc.b_scratchpad =
s->sc.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(sc.edge_emu_buffer);
COPY(me.scratchpad);
COPY(me.temp);
COPY(sc.rd_scratchpad);
COPY(sc.b_scratchpad);
COPY(sc.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->avctx->codec_tag == AV_RL32("VCR2")) {
// exchange uv
int16_t (*tmp)[64];
tmp = dst->pblocks[4];
dst->pblocks[4] = dst->pblocks[5];
dst->pblocks[5] = tmp;
}
if (!dst->sc.edge_emu_buffer &&
(ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
&dst->sc, 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) {
int err;
memcpy(s, s1, sizeof(MpegEncContext));
s->avctx = dst;
s->bitstream_buffer = NULL;
s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
ff_mpv_idct_init(s);
if ((err = ff_mpv_common_init(s)) < 0)
return err;
}
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;
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
if (s1->picture[i].f->buf[0] &&
(ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
return ret;
}
#define UPDATE_PICTURE(pic)\
do {\
ff_mpeg_unref_picture(s->avctx, &s->pic);\
if (s1->pic.f->buf[0])\
ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
else\
ret = ff_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);
#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
((pic && pic >= old_ctx->picture && \
pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
&new_ctx->picture[pic - old_ctx->picture] : NULL)
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->last_time_base, &s1->last_time_base,
(char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
(char *) &s1->last_time_base);
// 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 +
AV_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,
AV_INPUT_BUFFER_PADDING_SIZE);
}
// linesize dependend scratch buffer allocation
if (!s->sc.edge_emu_buffer)
if (s1->linesize) {
if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
&s->sc, 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;
}
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->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);
}
/**
* 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;
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->avctx->flags & AV_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 ff_mpeg_er_init(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;
dct_init(s);
/* 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);
FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
MAX_PICTURE_COUNT * sizeof(Picture), fail);
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
s->picture[i].f = av_frame_alloc();
if (!s->picture[i].f)
goto fail;
}
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));
memset(&s->new_picture, 0, sizeof(s->new_picture));
s->next_picture.f = av_frame_alloc();
if (!s->next_picture.f)
goto fail;
s->last_picture.f = av_frame_alloc();
if (!s->last_picture.f)
goto fail;
s->current_picture.f = av_frame_alloc();
if (!s->current_picture.f)
goto fail;
s->new_picture.f = av_frame_alloc();
if (!s->new_picture.f)
goto fail;
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 void 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;
}
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);
free_context_frame(s);
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) &&
(err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
goto fail;
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 ((err = 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;
if (s->picture) {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
ff_free_picture_tables(&s->picture[i]);
ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
av_frame_free(&s->picture[i].f);
}
}
av_freep(&s->picture);
ff_free_picture_tables(&s->last_picture);
ff_mpeg_unref_picture(s->avctx, &s->last_picture);
av_frame_free(&s->last_picture.f);
ff_free_picture_tables(&s->current_picture);
ff_mpeg_unref_picture(s->avctx, &s->current_picture);
av_frame_free(&s->current_picture.f);
ff_free_picture_tables(&s->next_picture);
ff_mpeg_unref_picture(s->avctx, &s->next_picture);
av_frame_free(&s->next_picture.f);
ff_free_picture_tables(&s->new_picture);
ff_mpeg_unref_picture(s->avctx, &s->new_picture);
av_frame_free(&s->new_picture.f);
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;
}
/**
* generic function called after decoding
* the header and before a frame is 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->buf[0]) {
ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
}
/* release forgotten pictures */
/* if (mpeg124/h263) */
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) {
ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
}
}
ff_mpeg_unref_picture(s->avctx, &s->current_picture);
/* release non reference frames */
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (!s->picture[i].reference)
ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
}
if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
// 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->avctx, s->picture, 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 (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->avctx->flags && AV_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->avctx, &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;
}
ff_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 || !s->last_picture_ptr->f->buf[0]) &&
(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->avctx, s->picture, 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];
s->last_picture_ptr->reference = 3;
s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_I;
if (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 || !s->next_picture_ptr->f->buf[0]) &&
s->pict_type == AV_PICTURE_TYPE_B) {
/* Allocate a dummy frame */
i = ff_find_unused_picture(s->avctx, s->picture, 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];
s->next_picture_ptr->reference = 3;
s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_I;
if (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->avctx, &s->last_picture);
if (s->last_picture_ptr->f->buf[0] &&
(ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
s->last_picture_ptr)) < 0)
return ret;
}
if (s->next_picture_ptr) {
ff_mpeg_unref_picture(s->avctx, &s->next_picture);
if (s->next_picture_ptr->f->buf[0] &&
(ret = ff_mpeg_ref_picture(s->avctx, &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->buf[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;
}
}
/* 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 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;
}
/* called after a frame has been decoded. */
void ff_mpv_frame_end(MpegEncContext *s)
{
#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 */
emms_c();
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
*/
static int 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->idsp.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->idsp.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->idsp.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->idsp.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->avctx->flags & AV_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->sc.b_scratchpad;
dest_cb= s->sc.b_scratchpad+16*linesize;
dest_cr= s->sc.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,
lowest_referenced_row(s, 0),
0);
}
if (s->mv_dir & MV_DIR_BACKWARD) {
ff_thread_await_progress(&s->next_picture_ptr->tf,
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->avctx->flags & AV_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->avctx->flags & AV_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->avctx->flags & AV_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->idsp.idct_put(dest_y, dct_linesize, block[0]);
s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
if(s->chroma_y_shift){
s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
}else{
dct_linesize = uvlinesize << s->interlaced_dct;
dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8;
s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
if(!s->chroma_x_shift){//Chroma444
s->idsp.idct_put(dest_cb + 8, dct_linesize, block[8]);
s->idsp.idct_put(dest_cr + 8, dct_linesize, block[9]);
s->idsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
s->idsp.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);
}
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
{
ff_draw_horiz_band(s->avctx, s->current_picture.f,
s->last_picture.f, y, h, s->picture_structure,
s->first_field, s->low_delay);
}
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) * (1 << mb_size);
s->dest[1] = s->current_picture.f->data[1] + (s->mb_x - 1) * (1 << (mb_size - s->chroma_x_shift));
s->dest[2] = s->current_picture.f->data[2] + (s->mb_x - 1) * (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 || !s->picture)
return;
for (i = 0; i < MAX_PICTURE_COUNT; i++)
ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
ff_mpeg_unref_picture(s->avctx, &s->current_picture);
ff_mpeg_unref_picture(s->avctx, &s->last_picture);
ff_mpeg_unref_picture(s->avctx, &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;
}
/**
* 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);
}
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