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FFmpeg/libavcodec/h264_slice.c
wm4 f9e7a2f95a dxva: add support for new dxva2 and d3d11 hwaccel APIs 
This also adds support to avconv (which is trivial due to the new
hwaccel API being generic enough).

The new decoder setup code in dxva2.c is significantly based on work by
Steve Lhomme <robux4@gmail.com>, but with heavy changes/rewrites.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2017-06-08 21:20:18 +02:00

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/*
* H.26L/H.264/AVC/JVT/14496-10/... decoder
* Copyright (c) 2003 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
* H.264 / AVC / MPEG-4 part10 codec.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "libavutil/avassert.h"
#include "libavutil/display.h"
#include "libavutil/imgutils.h"
#include "libavutil/stereo3d.h"
#include "libavutil/timer.h"
#include "internal.h"
#include "cabac.h"
#include "cabac_functions.h"
#include "error_resilience.h"
#include "golomb_legacy.h"
#include "avcodec.h"
#include "h264.h"
#include "h264dec.h"
#include "h264data.h"
#include "h264chroma.h"
#include "h264_mvpred.h"
#include "h264_ps.h"
#include "mathops.h"
#include "mpegutils.h"
#include "rectangle.h"
#include "thread.h"
static const uint8_t field_scan[16] = {
0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
};
static const uint8_t field_scan8x8[64] = {
0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
};
static const uint8_t field_scan8x8_cavlc[64] = {
0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
};
// zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
static const uint8_t zigzag_scan8x8_cavlc[64] = {
0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
};
static void release_unused_pictures(H264Context *h, int remove_current)
{
int i;
/* release non reference frames */
for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
if (h->DPB[i].f->buf[0] && !h->DPB[i].reference &&
(remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
ff_h264_unref_picture(h, &h->DPB[i]);
}
}
}
static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
{
const H264Context *h = sl->h264;
int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size);
// edge emu needs blocksize + filter length - 1
// (= 21x21 for H.264)
av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21);
av_fast_malloc(&sl->top_borders[0], &sl->top_borders_allocated[0],
h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
av_fast_malloc(&sl->top_borders[1], &sl->top_borders_allocated[1],
h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
if (!sl->bipred_scratchpad || !sl->edge_emu_buffer ||
!sl->top_borders[0] || !sl->top_borders[1]) {
av_freep(&sl->bipred_scratchpad);
av_freep(&sl->edge_emu_buffer);
av_freep(&sl->top_borders[0]);
av_freep(&sl->top_borders[1]);
sl->bipred_scratchpad_allocated = 0;
sl->edge_emu_buffer_allocated = 0;
sl->top_borders_allocated[0] = 0;
sl->top_borders_allocated[1] = 0;
return AVERROR(ENOMEM);
}
return 0;
}
static int init_table_pools(H264Context *h)
{
const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
const int mb_array_size = h->mb_stride * h->mb_height;
const int b4_stride = h->mb_width * 4 + 1;
const int b4_array_size = b4_stride * h->mb_height * 4;
h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
av_buffer_allocz);
h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
sizeof(uint32_t), av_buffer_allocz);
h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
sizeof(int16_t), av_buffer_allocz);
h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
!h->ref_index_pool) {
av_buffer_pool_uninit(&h->qscale_table_pool);
av_buffer_pool_uninit(&h->mb_type_pool);
av_buffer_pool_uninit(&h->motion_val_pool);
av_buffer_pool_uninit(&h->ref_index_pool);
return AVERROR(ENOMEM);
}
return 0;
}
static int alloc_picture(H264Context *h, H264Picture *pic)
{
int i, ret = 0;
av_assert0(!pic->f->data[0]);
pic->tf.f = pic->f;
ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
AV_GET_BUFFER_FLAG_REF : 0);
if (ret < 0)
goto fail;
if (h->avctx->hwaccel) {
const AVHWAccel *hwaccel = h->avctx->hwaccel;
av_assert0(!pic->hwaccel_picture_private);
if (hwaccel->frame_priv_data_size) {
pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size);
if (!pic->hwaccel_priv_buf)
return AVERROR(ENOMEM);
pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
}
}
if (!h->qscale_table_pool) {
ret = init_table_pools(h);
if (ret < 0)
goto fail;
}
pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
if (!pic->qscale_table_buf || !pic->mb_type_buf)
goto fail;
pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
for (i = 0; i < 2; i++) {
pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
goto fail;
pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
pic->ref_index[i] = pic->ref_index_buf[i]->data;
}
return 0;
fail:
ff_h264_unref_picture(h, pic);
return (ret < 0) ? ret : AVERROR(ENOMEM);
}
static inline int pic_is_unused(H264Context *h, H264Picture *pic)
{
if (!pic->f->buf[0])
return 1;
return 0;
}
static int find_unused_picture(H264Context *h)
{
int i;
for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
if (pic_is_unused(h, &h->DPB[i]))
break;
}
if (i == H264_MAX_PICTURE_COUNT)
return AVERROR_INVALIDDATA;
return i;
}
static int initialize_cur_frame(H264Context *h)
{
H264Picture *cur;
int ret;
release_unused_pictures(h, 1);
ff_h264_unref_picture(h, &h->cur_pic);
h->cur_pic_ptr = NULL;
ret = find_unused_picture(h);
if (ret < 0) {
av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
return ret;
}
cur = &h->DPB[ret];
ret = alloc_picture(h, cur);
if (ret < 0)
return ret;
ret = ff_h264_ref_picture(h, &h->cur_pic, cur);
if (ret < 0)
return ret;
h->cur_pic_ptr = cur;
return 0;
}
#define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size))))
#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
((pic && pic >= old_ctx->DPB && \
pic < old_ctx->DPB + H264_MAX_PICTURE_COUNT) ? \
&new_ctx->DPB[pic - old_ctx->DPB] : NULL)
static void copy_picture_range(H264Picture **to, H264Picture **from, int count,
H264Context *new_base,
H264Context *old_base)
{
int i;
for (i = 0; i < count; i++) {
assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
IN_RANGE(from[i], old_base->DPB,
sizeof(H264Picture) * H264_MAX_PICTURE_COUNT) ||
!from[i]));
to[i] = REBASE_PICTURE(from[i], new_base, old_base);
}
}
static int h264_slice_header_init(H264Context *h);
int ff_h264_update_thread_context(AVCodecContext *dst,
const AVCodecContext *src)
{
H264Context *h = dst->priv_data, *h1 = src->priv_data;
int inited = h->context_initialized, err = 0;
int need_reinit = 0;
int i, ret;
if (dst == src || !h1->context_initialized)
return 0;
if (!h1->ps.sps)
return AVERROR_INVALIDDATA;
if (inited &&
(h->width != h1->width ||
h->height != h1->height ||
h->mb_width != h1->mb_width ||
h->mb_height != h1->mb_height ||
!h->ps.sps ||
h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
need_reinit = 1;
}
// SPS/PPS
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
av_buffer_unref(&h->ps.sps_list[i]);
if (h1->ps.sps_list[i]) {
h->ps.sps_list[i] = av_buffer_ref(h1->ps.sps_list[i]);
if (!h->ps.sps_list[i])
return AVERROR(ENOMEM);
}
}
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
av_buffer_unref(&h->ps.pps_list[i]);
if (h1->ps.pps_list[i]) {
h->ps.pps_list[i] = av_buffer_ref(h1->ps.pps_list[i]);
if (!h->ps.pps_list[i])
return AVERROR(ENOMEM);
}
}
h->ps.sps = h1->ps.sps;
if (need_reinit || !inited) {
h->width = h1->width;
h->height = h1->height;
h->mb_height = h1->mb_height;
h->mb_width = h1->mb_width;
h->mb_num = h1->mb_num;
h->mb_stride = h1->mb_stride;
h->b_stride = h1->b_stride;
if ((err = h264_slice_header_init(h)) < 0) {
av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
return err;
}
/* copy block_offset since frame_start may not be called */
memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
}
h->avctx->coded_height = h1->avctx->coded_height;
h->avctx->coded_width = h1->avctx->coded_width;
h->avctx->width = h1->avctx->width;
h->avctx->height = h1->avctx->height;
h->width_from_caller = h1->width_from_caller;
h->height_from_caller = h1->height_from_caller;
h->coded_picture_number = h1->coded_picture_number;
h->first_field = h1->first_field;
h->picture_structure = h1->picture_structure;
h->mb_aff_frame = h1->mb_aff_frame;
h->droppable = h1->droppable;
for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
ff_h264_unref_picture(h, &h->DPB[i]);
if (h1->DPB[i].f->buf[0] &&
(ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
return ret;
}
h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
ff_h264_unref_picture(h, &h->cur_pic);
if (h1->cur_pic.f->buf[0]) {
ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
if (ret < 0)
return ret;
}
h->enable_er = h1->enable_er;
h->workaround_bugs = h1->workaround_bugs;
h->droppable = h1->droppable;
// extradata/NAL handling
h->is_avc = h1->is_avc;
h->nal_length_size = h1->nal_length_size;
memcpy(&h->poc, &h1->poc, sizeof(h->poc));
memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
h->next_outputed_poc = h1->next_outputed_poc;
memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
h->nb_mmco = h1->nb_mmco;
h->mmco_reset = h1->mmco_reset;
h->explicit_ref_marking = h1->explicit_ref_marking;
h->long_ref_count = h1->long_ref_count;
h->short_ref_count = h1->short_ref_count;
copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
copy_picture_range(h->delayed_pic, h1->delayed_pic,
MAX_DELAYED_PIC_COUNT + 2, h, h1);
if (!h->cur_pic_ptr)
return 0;
if (!h->droppable) {
err = ff_h264_execute_ref_pic_marking(h);
h->poc.prev_poc_msb = h->poc.poc_msb;
h->poc.prev_poc_lsb = h->poc.poc_lsb;
}
h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
h->poc.prev_frame_num = h->poc.frame_num;
h->recovery_frame = h1->recovery_frame;
h->frame_recovered = h1->frame_recovered;
return err;
}
static int h264_frame_start(H264Context *h)
{
H264Picture *pic;
int i, ret;
const int pixel_shift = h->pixel_shift;
ret = initialize_cur_frame(h);
if (ret < 0)
return ret;
pic = h->cur_pic_ptr;
pic->reference = h->droppable ? 0 : h->picture_structure;
pic->f->coded_picture_number = h->coded_picture_number++;
pic->field_picture = h->picture_structure != PICT_FRAME;
pic->frame_num = h->poc.frame_num;
/*
* Zero key_frame here; IDR markings per slice in frame or fields are ORed
* in later.
* See decode_nal_units().
*/
pic->f->key_frame = 0;
pic->mmco_reset = 0;
pic->recovered = 0;
pic->f->pict_type = h->slice_ctx[0].slice_type;
pic->f->crop_left = h->crop_left;
pic->f->crop_right = h->crop_right;
pic->f->crop_top = h->crop_top;
pic->f->crop_bottom = h->crop_bottom;
if (CONFIG_ERROR_RESILIENCE && h->enable_er)
ff_er_frame_start(&h->slice_ctx[0].er);
for (i = 0; i < 16; i++) {
h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
}
for (i = 0; i < 16; i++) {
h->block_offset[16 + i] =
h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
h->block_offset[48 + 16 + i] =
h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
}
/* Some macroblocks can be accessed before they're available in case
* of lost slices, MBAFF or threading. */
memset(h->slice_table, -1,
(h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
/* We mark the current picture as non-reference after allocating it, so
* that if we break out due to an error it can be released automatically
* in the next ff_mpv_frame_start().
*/
h->cur_pic_ptr->reference = 0;
h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
h->postpone_filter = 0;
h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
assert(h->cur_pic_ptr->long_ref == 0);
return 0;
}
static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
uint8_t *src_y,
uint8_t *src_cb, uint8_t *src_cr,
int linesize, int uvlinesize,
int simple)
{
uint8_t *top_border;
int top_idx = 1;
const int pixel_shift = h->pixel_shift;
int chroma444 = CHROMA444(h);
int chroma422 = CHROMA422(h);
src_y -= linesize;
src_cb -= uvlinesize;
src_cr -= uvlinesize;
if (!simple && FRAME_MBAFF(h)) {
if (sl->mb_y & 1) {
if (!MB_MBAFF(sl)) {
top_border = sl->top_borders[0][sl->mb_x];
AV_COPY128(top_border, src_y + 15 * linesize);
if (pixel_shift)
AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
if (chroma444) {
if (pixel_shift) {
AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
} else {
AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
}
} else if (chroma422) {
if (pixel_shift) {
AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
} else {
AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
}
} else {
if (pixel_shift) {
AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
} else {
AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
}
}
}
}
} else if (MB_MBAFF(sl)) {
top_idx = 0;
} else
return;
}
top_border = sl->top_borders[top_idx][sl->mb_x];
/* There are two lines saved, the line above the top macroblock
* of a pair, and the line above the bottom macroblock. */
AV_COPY128(top_border, src_y + 16 * linesize);
if (pixel_shift)
AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
if (chroma444) {
if (pixel_shift) {
AV_COPY128(top_border + 32, src_cb + 16 * linesize);
AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
AV_COPY128(top_border + 64, src_cr + 16 * linesize);
AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
} else {
AV_COPY128(top_border + 16, src_cb + 16 * linesize);
AV_COPY128(top_border + 32, src_cr + 16 * linesize);
}
} else if (chroma422) {
if (pixel_shift) {
AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
} else {
AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
}
} else {
if (pixel_shift) {
AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
} else {
AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
}
}
}
}
/**
* Initialize implicit_weight table.
* @param field 0/1 initialize the weight for interlaced MBAFF
* -1 initializes the rest
*/
static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
{
int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
for (i = 0; i < 2; i++) {
sl->pwt.luma_weight_flag[i] = 0;
sl->pwt.chroma_weight_flag[i] = 0;
}
if (field < 0) {
if (h->picture_structure == PICT_FRAME) {
cur_poc = h->cur_pic_ptr->poc;
} else {
cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
}
if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
sl->ref_list[0][0].poc + sl->ref_list[1][0].poc == 2 * cur_poc) {
sl->pwt.use_weight = 0;
sl->pwt.use_weight_chroma = 0;
return;
}
ref_start = 0;
ref_count0 = sl->ref_count[0];
ref_count1 = sl->ref_count[1];
} else {
cur_poc = h->cur_pic_ptr->field_poc[field];
ref_start = 16;
ref_count0 = 16 + 2 * sl->ref_count[0];
ref_count1 = 16 + 2 * sl->ref_count[1];
}
sl->pwt.use_weight = 2;
sl->pwt.use_weight_chroma = 2;
sl->pwt.luma_log2_weight_denom = 5;
sl->pwt.chroma_log2_weight_denom = 5;
for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
int poc0 = sl->ref_list[0][ref0].poc;
for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
int w = 32;
if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
int poc1 = sl->ref_list[1][ref1].poc;
int td = av_clip_int8(poc1 - poc0);
if (td) {
int tb = av_clip_int8(cur_poc - poc0);
int tx = (16384 + (FFABS(td) >> 1)) / td;
int dist_scale_factor = (tb * tx + 32) >> 8;
if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
w = 64 - dist_scale_factor;
}
}
if (field < 0) {
sl->pwt.implicit_weight[ref0][ref1][0] =
sl->pwt.implicit_weight[ref0][ref1][1] = w;
} else {
sl->pwt.implicit_weight[ref0][ref1][field] = w;
}
}
}
}
/**
* initialize scan tables
*/
static void init_scan_tables(H264Context *h)
{
int i;
for (i = 0; i < 16; i++) {
#define TRANSPOSE(x) (x >> 2) | ((x << 2) & 0xF)
h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
h->field_scan[i] = TRANSPOSE(field_scan[i]);
#undef TRANSPOSE
}
for (i = 0; i < 64; i++) {
#define TRANSPOSE(x) (x >> 3) | ((x & 7) << 3)
h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
#undef TRANSPOSE
}
if (h->ps.sps->transform_bypass) { // FIXME same ugly
h->zigzag_scan_q0 = ff_zigzag_scan;
h->zigzag_scan8x8_q0 = ff_zigzag_direct;
h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
h->field_scan_q0 = field_scan;
h->field_scan8x8_q0 = field_scan8x8;
h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
} else {
h->zigzag_scan_q0 = h->zigzag_scan;
h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
h->field_scan_q0 = h->field_scan;
h->field_scan8x8_q0 = h->field_scan8x8;
h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
}
}
static enum AVPixelFormat get_pixel_format(H264Context *h)
{
#define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
(CONFIG_H264_D3D11VA_HWACCEL * 2) + \
CONFIG_H264_VAAPI_HWACCEL + \
(CONFIG_H264_VDA_HWACCEL * 2) + \
CONFIG_H264_VDPAU_HWACCEL)
enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
const enum AVPixelFormat *choices = pix_fmts;
switch (h->ps.sps->bit_depth_luma) {
case 9:
if (CHROMA444(h)) {
if (h->avctx->colorspace == AVCOL_SPC_RGB) {
*fmt++ = AV_PIX_FMT_GBRP9;
} else
*fmt++ = AV_PIX_FMT_YUV444P9;
} else if (CHROMA422(h))
*fmt++ = AV_PIX_FMT_YUV422P9;
else
*fmt++ = AV_PIX_FMT_YUV420P9;
break;
case 10:
if (CHROMA444(h)) {
if (h->avctx->colorspace == AVCOL_SPC_RGB) {
*fmt++ = AV_PIX_FMT_GBRP10;
} else
*fmt++ = AV_PIX_FMT_YUV444P10;
} else if (CHROMA422(h))
*fmt++ = AV_PIX_FMT_YUV422P10;
else
*fmt++ = AV_PIX_FMT_YUV420P10;
break;
case 8:
#if CONFIG_H264_VDPAU_HWACCEL
*fmt++ = AV_PIX_FMT_VDPAU;
#endif
if (CHROMA444(h)) {
if (h->avctx->colorspace == AVCOL_SPC_RGB)
*fmt++ = AV_PIX_FMT_GBRP;
else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
*fmt++ = AV_PIX_FMT_YUVJ444P;
else
*fmt++ = AV_PIX_FMT_YUV444P;
} else if (CHROMA422(h)) {
if (h->avctx->color_range == AVCOL_RANGE_JPEG)
*fmt++ = AV_PIX_FMT_YUVJ422P;
else
*fmt++ = AV_PIX_FMT_YUV422P;
} else {
#if CONFIG_H264_DXVA2_HWACCEL
*fmt++ = AV_PIX_FMT_DXVA2_VLD;
#endif
#if CONFIG_H264_D3D11VA_HWACCEL
*fmt++ = AV_PIX_FMT_D3D11VA_VLD;
*fmt++ = AV_PIX_FMT_D3D11;
#endif
#if CONFIG_H264_VAAPI_HWACCEL
*fmt++ = AV_PIX_FMT_VAAPI;
#endif
#if CONFIG_H264_VDA_HWACCEL
*fmt++ = AV_PIX_FMT_VDA_VLD;
*fmt++ = AV_PIX_FMT_VDA;
#endif
if (h->avctx->codec->pix_fmts)
choices = h->avctx->codec->pix_fmts;
else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
*fmt++ = AV_PIX_FMT_YUVJ420P;
else
*fmt++ = AV_PIX_FMT_YUV420P;
}
break;
default:
av_log(h->avctx, AV_LOG_ERROR,
"Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
return AVERROR_INVALIDDATA;
}
*fmt = AV_PIX_FMT_NONE;
return ff_get_format(h->avctx, choices);
}
/* export coded and cropped frame dimensions to AVCodecContext */
static int init_dimensions(H264Context *h)
{
SPS *sps = h->ps.sps;
int cr = sps->crop_right;
int cl = sps->crop_left;
int ct = sps->crop_top;
int cb = sps->crop_bottom;
int width = h->width - (cr + cl);
int height = h->height - (ct + cb);
/* handle container cropping */
if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
!sps->crop_top && !sps->crop_left &&
FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16)) {
width = h->width_from_caller;
height = h->height_from_caller;
cl = 0;
ct = 0;
cr = h->width - width;
cb = h->height - height;
} else {
h->width_from_caller = 0;
h->height_from_caller = 0;
}
h->avctx->coded_width = h->width;
h->avctx->coded_height = h->height;
h->avctx->width = width;
h->avctx->height = height;
h->crop_right = cr;
h->crop_left = cl;
h->crop_top = ct;
h->crop_bottom = cb;
return 0;
}
static int h264_slice_header_init(H264Context *h)
{
const SPS *sps = h->ps.sps;
int i, ret;
ff_set_sar(h->avctx, sps->sar);
av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
&h->chroma_x_shift, &h->chroma_y_shift);
if (sps->timing_info_present_flag) {
int64_t den = sps->time_scale;
if (h->sei.unregistered.x264_build < 44U)
den *= 2;
av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
sps->num_units_in_tick, den, 1 << 30);
}
ff_h264_free_tables(h);
h->first_field = 0;
h->prev_interlaced_frame = 1;
init_scan_tables(h);
ret = ff_h264_alloc_tables(h);
if (ret < 0) {
av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
return ret;
}
if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 10) {
av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
sps->bit_depth_luma);
return AVERROR_INVALIDDATA;
}
h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
h->pixel_shift = sps->bit_depth_luma > 8;
h->chroma_format_idc = sps->chroma_format_idc;
h->bit_depth_luma = sps->bit_depth_luma;
ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
sps->chroma_format_idc);
ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
sps->chroma_format_idc);
ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
if (ret < 0) {
av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
return ret;
}
} else {
for (i = 0; i < h->nb_slice_ctx; i++) {
H264SliceContext *sl = &h->slice_ctx[i];
sl->h264 = h;
sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
return ret;
}
}
}
h->context_initialized = 1;
return 0;
}
static int h264_init_ps(H264Context *h, const H264SliceContext *sl)
{
const SPS *sps;
int needs_reinit = 0, ret;
h->ps.pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
h->ps.sps = (SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data;
if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
h->chroma_format_idc != h->ps.sps->chroma_format_idc)
needs_reinit = 1;
}
sps = h->ps.sps;
h->avctx->profile = ff_h264_get_profile(sps);
h->avctx->level = sps->level_idc;
h->avctx->refs = sps->ref_frame_count;
if (h->mb_width != sps->mb_width ||
h->mb_height != sps->mb_height)
needs_reinit = 1;
h->mb_width = sps->mb_width;
h->mb_height = sps->mb_height;
h->mb_num = h->mb_width * h->mb_height;
h->mb_stride = h->mb_width + 1;
h->b_stride = h->mb_width * 4;
h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
h->width = 16 * h->mb_width;
h->height = 16 * h->mb_height;
ret = init_dimensions(h);
if (ret < 0)
return ret;
if (sps->video_signal_type_present_flag) {
h->avctx->color_range = sps->full_range ? AVCOL_RANGE_JPEG
: AVCOL_RANGE_MPEG;
if (sps->colour_description_present_flag) {
if (h->avctx->colorspace != sps->colorspace)
needs_reinit = 1;
h->avctx->color_primaries = sps->color_primaries;
h->avctx->color_trc = sps->color_trc;
h->avctx->colorspace = sps->colorspace;
}
}
if (!h->context_initialized || needs_reinit) {
h->context_initialized = 0;
if (sl != h->slice_ctx) {
av_log(h->avctx, AV_LOG_ERROR,
"changing width %d -> %d / height %d -> %d on "
"slice %d\n",
h->width, h->avctx->coded_width,
h->height, h->avctx->coded_height,
h->current_slice + 1);
return AVERROR_INVALIDDATA;
}
ff_h264_flush_change(h);
if ((ret = get_pixel_format(h)) < 0)
return ret;
h->avctx->pix_fmt = ret;
av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
"pix_fmt: %d\n", h->width, h->height, h->avctx->pix_fmt);
if ((ret = h264_slice_header_init(h)) < 0) {
av_log(h->avctx, AV_LOG_ERROR,
"h264_slice_header_init() failed\n");
return ret;
}
}
return 0;
}
static int h264_export_frame_props(H264Context *h)
{
const SPS *sps = h->ps.sps;
H264Picture *cur = h->cur_pic_ptr;
cur->f->interlaced_frame = 0;
cur->f->repeat_pict = 0;
/* Signal interlacing information externally. */
/* Prioritize picture timing SEI information over used
* decoding process if it exists. */
if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
H264SEIPictureTiming *pt = &h->sei.picture_timing;
switch (pt->pic_struct) {
case H264_SEI_PIC_STRUCT_FRAME:
break;
case H264_SEI_PIC_STRUCT_TOP_FIELD:
case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
cur->f->interlaced_frame = 1;
break;
case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
if (FIELD_OR_MBAFF_PICTURE(h))
cur->f->interlaced_frame = 1;
else
// try to flag soft telecine progressive
cur->f->interlaced_frame = h->prev_interlaced_frame;
break;
case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
/* Signal the possibility of telecined film externally
* (pic_struct 5,6). From these hints, let the applications
* decide if they apply deinterlacing. */
cur->f->repeat_pict = 1;
break;
case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
cur->f->repeat_pict = 2;
break;
case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
cur->f->repeat_pict = 4;
break;
}
if ((pt->ct_type & 3) &&
pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
} else {
/* Derive interlacing flag from used decoding process. */
cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
}
h->prev_interlaced_frame = cur->f->interlaced_frame;
if (cur->field_poc[0] != cur->field_poc[1]) {
/* Derive top_field_first from field pocs. */
cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
} else {
if (cur->f->interlaced_frame ||
(sps->pic_struct_present_flag && h->sei.picture_timing.present)) {
/* Use picture timing SEI information. Even if it is a
* information of a past frame, better than nothing. */
if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
cur->f->top_field_first = 1;
else
cur->f->top_field_first = 0;
} else {
/* Most likely progressive */
cur->f->top_field_first = 0;
}
}
if (h->sei.frame_packing.present &&
h->sei.frame_packing.arrangement_type >= 0 &&
h->sei.frame_packing.arrangement_type <= 6 &&
h->sei.frame_packing.content_interpretation_type > 0 &&
h->sei.frame_packing.content_interpretation_type < 3) {
H264SEIFramePacking *fp = &h->sei.frame_packing;
AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
if (!stereo)
return AVERROR(ENOMEM);
switch (fp->arrangement_type) {
case 0:
stereo->type = AV_STEREO3D_CHECKERBOARD;
break;
case 1:
stereo->type = AV_STEREO3D_COLUMNS;
break;
case 2:
stereo->type = AV_STEREO3D_LINES;
break;
case 3:
if (fp->quincunx_subsampling)
stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
else
stereo->type = AV_STEREO3D_SIDEBYSIDE;
break;
case 4:
stereo->type = AV_STEREO3D_TOPBOTTOM;
break;
case 5:
stereo->type = AV_STEREO3D_FRAMESEQUENCE;
break;
case 6:
stereo->type = AV_STEREO3D_2D;
break;
}
if (fp->content_interpretation_type == 2)
stereo->flags = AV_STEREO3D_FLAG_INVERT;
}
if (h->sei.display_orientation.present &&
(h->sei.display_orientation.anticlockwise_rotation ||
h->sei.display_orientation.hflip ||
h->sei.display_orientation.vflip)) {
H264SEIDisplayOrientation *o = &h->sei.display_orientation;
double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
AV_FRAME_DATA_DISPLAYMATRIX,
sizeof(int32_t) * 9);
if (!rotation)
return AVERROR(ENOMEM);
av_display_rotation_set((int32_t *)rotation->data, angle);
av_display_matrix_flip((int32_t *)rotation->data,
o->hflip, o->vflip);
}
if (h->sei.afd.present) {
AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
sizeof(uint8_t));
if (!sd)
return AVERROR(ENOMEM);
*sd->data = h->sei.afd.active_format_description;
h->sei.afd.present = 0;
}
if (h->sei.a53_caption.a53_caption) {
H264SEIA53Caption *a53 = &h->sei.a53_caption;
AVFrameSideData *sd = av_frame_new_side_data(cur->f,
AV_FRAME_DATA_A53_CC,
a53->a53_caption_size);
if (!sd)
return AVERROR(ENOMEM);
memcpy(sd->data, a53->a53_caption, a53->a53_caption_size);
av_freep(&a53->a53_caption);
a53->a53_caption_size = 0;
}
return 0;
}
static int h264_select_output_frame(H264Context *h)
{
const SPS *sps = h->ps.sps;
H264Picture *out = h->cur_pic_ptr;
H264Picture *cur = h->cur_pic_ptr;
int i, pics, out_of_order, out_idx;
int invalid = 0, cnt = 0;
int ret;
if (sps->bitstream_restriction_flag ||
h->avctx->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
}
pics = 0;
while (h->delayed_pic[pics])
pics++;
assert(pics <= MAX_DELAYED_PIC_COUNT);
h->delayed_pic[pics++] = cur;
if (cur->reference == 0)
cur->reference = DELAYED_PIC_REF;
/* Frame reordering. This code takes pictures from coding order and sorts
* them by their incremental POC value into display order. It supports POC
* gaps, MMCO reset codes and random resets.
* A "display group" can start either with a IDR frame (f.key_frame = 1),
* and/or can be closed down with a MMCO reset code. In sequences where
* there is no delay, we can't detect that (since the frame was already
* output to the user), so we also set h->mmco_reset to detect the MMCO
* reset code.
* FIXME: if we detect insufficient delays (as per h->avctx->has_b_frames),
* we increase the delay between input and output. All frames affected by
* the lag (e.g. those that should have been output before another frame
* that we already returned to the user) will be dropped. This is a bug
* that we will fix later. */
for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) {
cnt += out->poc < h->last_pocs[i];
invalid += out->poc == INT_MIN;
}
if (!h->mmco_reset && !cur->f->key_frame &&
cnt + invalid == MAX_DELAYED_PIC_COUNT && cnt > 0) {
h->mmco_reset = 2;
if (pics > 1)
h->delayed_pic[pics - 2]->mmco_reset = 2;
}
if (h->mmco_reset || cur->f->key_frame) {
for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
h->last_pocs[i] = INT_MIN;
cnt = 0;
invalid = MAX_DELAYED_PIC_COUNT;
}
out = h->delayed_pic[0];
out_idx = 0;
for (i = 1; i < MAX_DELAYED_PIC_COUNT &&
h->delayed_pic[i] &&
!h->delayed_pic[i - 1]->mmco_reset &&
!h->delayed_pic[i]->f->key_frame;
i++)
if (h->delayed_pic[i]->poc < out->poc) {
out = h->delayed_pic[i];
out_idx = i;
}
if (h->avctx->has_b_frames == 0 &&
(h->delayed_pic[0]->f->key_frame || h->mmco_reset))
h->next_outputed_poc = INT_MIN;
out_of_order = !out->f->key_frame && !h->mmco_reset &&
(out->poc < h->next_outputed_poc);
if (sps->bitstream_restriction_flag &&
h->avctx->has_b_frames >= sps->num_reorder_frames) {
} else if (out_of_order && pics - 1 == h->avctx->has_b_frames &&
h->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) {
if (invalid + cnt < MAX_DELAYED_PIC_COUNT) {
h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, cnt);
}
} else if (!h->avctx->has_b_frames &&
((h->next_outputed_poc != INT_MIN &&
out->poc > h->next_outputed_poc + 2) ||
cur->f->pict_type == AV_PICTURE_TYPE_B)) {
h->avctx->has_b_frames++;
}
if (pics > h->avctx->has_b_frames) {
out->reference &= ~DELAYED_PIC_REF;
for (i = out_idx; h->delayed_pic[i]; i++)
h->delayed_pic[i] = h->delayed_pic[i + 1];
}
memmove(h->last_pocs, &h->last_pocs[1],
sizeof(*h->last_pocs) * (MAX_DELAYED_PIC_COUNT - 1));
h->last_pocs[MAX_DELAYED_PIC_COUNT - 1] = cur->poc;
if (!out_of_order && pics > h->avctx->has_b_frames) {
av_frame_unref(h->output_frame);
ret = av_frame_ref(h->output_frame, out->f);
if (ret < 0)
return ret;
if (out->recovered) {
// We have reached an recovery point and all frames after it in
// display order are "recovered".
h->frame_recovered |= FRAME_RECOVERED_SEI;
}
out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
if (!out->recovered) {
if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT))
av_frame_unref(h->output_frame);
else
h->output_frame->flags |= AV_FRAME_FLAG_CORRUPT;
}
if (out->mmco_reset) {
if (out_idx > 0) {
h->next_outputed_poc = out->poc;
h->delayed_pic[out_idx - 1]->mmco_reset = out->mmco_reset;
} else {
h->next_outputed_poc = INT_MIN;
}
} else {
if (out_idx == 0 && pics > 1 && h->delayed_pic[0]->f->key_frame) {
h->next_outputed_poc = INT_MIN;
} else {
h->next_outputed_poc = out->poc;
}
}
h->mmco_reset = 0;
} else {
av_log(h->avctx, AV_LOG_DEBUG, "no picture\n");
}
return 0;
}
/* This function is called right after decoding the slice header for a first
* slice in a field (or a frame). It decides whether we are decoding a new frame
* or a second field in a pair and does the necessary setup.
*/
static int h264_field_start(H264Context *h, const H264SliceContext *sl,
const H2645NAL *nal)
{
const SPS *sps;
int last_pic_structure, last_pic_droppable, ret;
ret = h264_init_ps(h, sl);
if (ret < 0)
return ret;
sps = h->ps.sps;
last_pic_droppable = h->droppable;
last_pic_structure = h->picture_structure;
h->droppable = (nal->ref_idc == 0);
h->picture_structure = sl->picture_structure;
h->poc.frame_num = sl->frame_num;
h->poc.poc_lsb = sl->poc_lsb;
h->poc.delta_poc_bottom = sl->delta_poc_bottom;
h->poc.delta_poc[0] = sl->delta_poc[0];
h->poc.delta_poc[1] = sl->delta_poc[1];
/* Shorten frame num gaps so we don't have to allocate reference
* frames just to throw them away */
if (h->poc.frame_num != h->poc.prev_frame_num) {
int unwrap_prev_frame_num = h->poc.prev_frame_num;
int max_frame_num = 1 << sps->log2_max_frame_num;
if (unwrap_prev_frame_num > h->poc.frame_num)
unwrap_prev_frame_num -= max_frame_num;
if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
if (unwrap_prev_frame_num < 0)
unwrap_prev_frame_num += max_frame_num;
h->poc.prev_frame_num = unwrap_prev_frame_num;
}
}
/* See if we have a decoded first field looking for a pair...
* Here, we're using that to see if we should mark previously
* decode frames as "finished".
* We have to do that before the "dummy" in-between frame allocation,
* since that can modify s->current_picture_ptr. */
if (h->first_field) {
assert(h->cur_pic_ptr);
assert(h->cur_pic_ptr->f->buf[0]);
assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
/* figure out if we have a complementary field pair */
if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
/* Previous field is unmatched. Don't display it, but let it
* remain for reference if marked as such. */
if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
last_pic_structure == PICT_TOP_FIELD);
}
} else {
if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
/* This and previous field were reference, but had
* different frame_nums. Consider this field first in
* pair. Throw away previous field except for reference
* purposes. */
if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
last_pic_structure == PICT_TOP_FIELD);
}
} else {
/* Second field in complementary pair */
if (!((last_pic_structure == PICT_TOP_FIELD &&
h->picture_structure == PICT_BOTTOM_FIELD) ||
(last_pic_structure == PICT_BOTTOM_FIELD &&
h->picture_structure == PICT_TOP_FIELD))) {
av_log(h->avctx, AV_LOG_ERROR,
"Invalid field mode combination %d/%d\n",
last_pic_structure, h->picture_structure);
h->picture_structure = last_pic_structure;
h->droppable = last_pic_droppable;
return AVERROR_INVALIDDATA;
} else if (last_pic_droppable != h->droppable) {
avpriv_request_sample(h->avctx,
"Found reference and non-reference fields in the same frame, which");
h->picture_structure = last_pic_structure;
h->droppable = last_pic_droppable;
return AVERROR_PATCHWELCOME;
}
}
}
}
while (h->poc.frame_num != h->poc.prev_frame_num &&
h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
h->poc.frame_num, h->poc.prev_frame_num);
ret = initialize_cur_frame(h);
if (ret < 0) {
h->first_field = 0;
return ret;
}
h->poc.prev_frame_num++;
h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
h->explicit_ref_marking = 0;
ret = ff_h264_execute_ref_pic_marking(h);
if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
return ret;
/* Error concealment: If a ref is missing, copy the previous ref
* in its place.
* FIXME: Avoiding a memcpy would be nice, but ref handling makes
* many assumptions about there being no actual duplicates.
* FIXME: This does not copy padding for out-of-frame motion
* vectors. Given we are concealing a lost frame, this probably
* is not noticeable by comparison, but it should be fixed. */
if (h->short_ref_count) {
if (prev &&
h->short_ref[0]->f->width == prev->f->width &&
h->short_ref[0]->f->height == prev->f->height &&
h->short_ref[0]->f->format == prev->f->format) {
ff_thread_await_progress(&prev->tf, INT_MAX, 0);
if (prev->field_picture)
ff_thread_await_progress(&prev->tf, INT_MAX, 1);
av_image_copy(h->short_ref[0]->f->data,
h->short_ref[0]->f->linesize,
(const uint8_t **)prev->f->data,
prev->f->linesize,
prev->f->format,
h->mb_width * 16,
h->mb_height * 16);
h->short_ref[0]->poc = prev->poc + 2;
}
h->short_ref[0]->frame_num = h->poc.prev_frame_num;
}
}
/* See if we have a decoded first field looking for a pair...
* We're using that to see whether to continue decoding in that
* frame, or to allocate a new one. */
if (h->first_field) {
assert(h->cur_pic_ptr);
assert(h->cur_pic_ptr->f->buf[0]);
assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
/* figure out if we have a complementary field pair */
if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
/* Previous field is unmatched. Don't display it, but let it
* remain for reference if marked as such. */
h->cur_pic_ptr = NULL;
h->first_field = FIELD_PICTURE(h);
} else {
if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
/* This and the previous field had different frame_nums.
* Consider this field first in pair. Throw away previous
* one except for reference purposes. */
h->first_field = 1;
h->cur_pic_ptr = NULL;
} else {
/* Second field in complementary pair */
h->first_field = 0;
}
}
} else {
/* Frame or first field in a potentially complementary pair */
h->first_field = FIELD_PICTURE(h);
}
if (!FIELD_PICTURE(h) || h->first_field) {
if (h264_frame_start(h) < 0) {
h->first_field = 0;
return AVERROR_INVALIDDATA;
}
} else {
release_unused_pictures(h, 0);
}
ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc,
h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
h->nb_mmco = sl->nb_mmco;
h->explicit_ref_marking = sl->explicit_ref_marking;
h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
if (h->sei.recovery_point.recovery_frame_cnt >= 0 && h->recovery_frame < 0) {
h->recovery_frame = (h->poc.frame_num + h->sei.recovery_point.recovery_frame_cnt) &
((1 << h->ps.sps->log2_max_frame_num) - 1);
}
h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE) ||
(h->sei.recovery_point.recovery_frame_cnt >= 0);
if (nal->type == H264_NAL_IDR_SLICE || h->recovery_frame == h->poc.frame_num) {
h->recovery_frame = -1;
h->cur_pic_ptr->recovered = 1;
}
// If we have an IDR, all frames after it in decoded order are
// "recovered".
if (nal->type == H264_NAL_IDR_SLICE)
h->frame_recovered |= FRAME_RECOVERED_IDR;
h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
/* Set the frame properties/side data. Only done for the second field in
* field coded frames, since some SEI information is present for each field
* and is merged by the SEI parsing code. */
if (!FIELD_PICTURE(h) || !h->first_field) {
ret = h264_export_frame_props(h);
if (ret < 0)
return ret;
ret = h264_select_output_frame(h);
if (ret < 0)
return ret;
}
if (h->avctx->hwaccel) {
ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0);
if (ret < 0)
return ret;
}
return 0;
}
static int h264_slice_header_parse(H264SliceContext *sl, const H2645NAL *nal,
const H264ParamSets *ps, AVCodecContext *avctx)
{
const SPS *sps;
const PPS *pps;
int ret;
unsigned int slice_type, tmp, i;
int field_pic_flag, bottom_field_flag, picture_structure;
sl->first_mb_addr = get_ue_golomb(&sl->gb);
slice_type = get_ue_golomb_31(&sl->gb);
if (slice_type > 9) {
av_log(avctx, AV_LOG_ERROR,
"slice type %d too large at %d\n",
slice_type, sl->first_mb_addr);
return AVERROR_INVALIDDATA;
}
if (slice_type > 4) {
slice_type -= 5;
sl->slice_type_fixed = 1;
} else
sl->slice_type_fixed = 0;
slice_type = ff_h264_golomb_to_pict_type[slice_type];
sl->slice_type = slice_type;
sl->slice_type_nos = slice_type & 3;
if (nal->type == H264_NAL_IDR_SLICE &&
sl->slice_type_nos != AV_PICTURE_TYPE_I) {
av_log(avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
return AVERROR_INVALIDDATA;
}
sl->pps_id = get_ue_golomb(&sl->gb);
if (sl->pps_id >= MAX_PPS_COUNT) {
av_log(avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
return AVERROR_INVALIDDATA;
}
if (!ps->pps_list[sl->pps_id]) {
av_log(avctx, AV_LOG_ERROR,
"non-existing PPS %u referenced\n",
sl->pps_id);
return AVERROR_INVALIDDATA;
}
pps = (const PPS*)ps->pps_list[sl->pps_id]->data;
if (!ps->sps_list[pps->sps_id]) {
av_log(avctx, AV_LOG_ERROR,
"non-existing SPS %u referenced\n", pps->sps_id);
return AVERROR_INVALIDDATA;
}
sps = (const SPS*)ps->sps_list[pps->sps_id]->data;
sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
sl->mb_mbaff = 0;
if (sps->frame_mbs_only_flag) {
picture_structure = PICT_FRAME;
} else {
field_pic_flag = get_bits1(&sl->gb);
if (field_pic_flag) {
bottom_field_flag = get_bits1(&sl->gb);
picture_structure = PICT_TOP_FIELD + bottom_field_flag;
} else {
picture_structure = PICT_FRAME;
}
}
sl->picture_structure = picture_structure;
sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
if (picture_structure == PICT_FRAME) {
sl->curr_pic_num = sl->frame_num;
sl->max_pic_num = 1 << sps->log2_max_frame_num;
} else {
sl->curr_pic_num = 2 * sl->frame_num + 1;
sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
}
if (nal->type == H264_NAL_IDR_SLICE)
get_ue_golomb(&sl->gb); /* idr_pic_id */
if (sps->poc_type == 0) {
sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
sl->delta_poc_bottom = get_se_golomb(&sl->gb);
}
if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
sl->delta_poc[0] = get_se_golomb(&sl->gb);
if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
sl->delta_poc[1] = get_se_golomb(&sl->gb);
}
sl->redundant_pic_count = 0;
if (pps->redundant_pic_cnt_present)
sl->redundant_pic_count = get_ue_golomb(&sl->gb);
if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
&sl->gb, pps, sl->slice_type_nos,
picture_structure);
if (ret < 0)
return ret;
if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
ret = ff_h264_decode_ref_pic_list_reordering(sl, avctx);
if (ret < 0) {
sl->ref_count[1] = sl->ref_count[0] = 0;
return ret;
}
}
sl->pwt.use_weight = 0;
for (i = 0; i < 2; i++) {
sl->pwt.luma_weight_flag[i] = 0;
sl->pwt.chroma_weight_flag[i] = 0;
}
if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
(pps->weighted_bipred_idc == 1 &&
sl->slice_type_nos == AV_PICTURE_TYPE_B))
ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
sl->slice_type_nos, &sl->pwt);
sl->explicit_ref_marking = 0;
if (nal->ref_idc) {
ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, avctx);
if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
return AVERROR_INVALIDDATA;
}
if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
tmp = get_ue_golomb_31(&sl->gb);
if (tmp > 2) {
av_log(avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
return AVERROR_INVALIDDATA;
}
sl->cabac_init_idc = tmp;
}
sl->last_qscale_diff = 0;
tmp = pps->init_qp + get_se_golomb(&sl->gb);
if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
av_log(avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
return AVERROR_INVALIDDATA;
}
sl->qscale = tmp;
sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
// FIXME qscale / qp ... stuff
if (sl->slice_type == AV_PICTURE_TYPE_SP)
get_bits1(&sl->gb); /* sp_for_switch_flag */
if (sl->slice_type == AV_PICTURE_TYPE_SP ||
sl->slice_type == AV_PICTURE_TYPE_SI)
get_se_golomb(&sl->gb); /* slice_qs_delta */
sl->deblocking_filter = 1;
sl->slice_alpha_c0_offset = 0;
sl->slice_beta_offset = 0;
if (pps->deblocking_filter_parameters_present) {
tmp = get_ue_golomb_31(&sl->gb);
if (tmp > 2) {
av_log(avctx, AV_LOG_ERROR,
"deblocking_filter_idc %u out of range\n", tmp);
return AVERROR_INVALIDDATA;
}
sl->deblocking_filter = tmp;
if (sl->deblocking_filter < 2)
sl->deblocking_filter ^= 1; // 1<->0
if (sl->deblocking_filter) {
sl->slice_alpha_c0_offset = get_se_golomb(&sl->gb) * 2;
sl->slice_beta_offset = get_se_golomb(&sl->gb) * 2;
if (sl->slice_alpha_c0_offset > 12 ||
sl->slice_alpha_c0_offset < -12 ||
sl->slice_beta_offset > 12 ||
sl->slice_beta_offset < -12) {
av_log(avctx, AV_LOG_ERROR,
"deblocking filter parameters %d %d out of range\n",
sl->slice_alpha_c0_offset, sl->slice_beta_offset);
return AVERROR_INVALIDDATA;
}
}
}
return 0;
}
/* do all the per-slice initialization needed before we can start decoding the
* actual MBs */
static int h264_slice_init(H264Context *h, H264SliceContext *sl,
const H2645NAL *nal)
{
int i, j, ret = 0;
if (h->current_slice > 0) {
if (h->ps.pps != (const PPS*)h->ps.pps_list[sl->pps_id]->data) {
av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
return AVERROR_INVALIDDATA;
}
if (h->picture_structure != sl->picture_structure ||
h->droppable != (nal->ref_idc == 0)) {
av_log(h->avctx, AV_LOG_ERROR,
"Changing field mode (%d -> %d) between slices is not allowed\n",
h->picture_structure, sl->picture_structure);
return AVERROR_INVALIDDATA;
} else if (!h->cur_pic_ptr) {
av_log(h->avctx, AV_LOG_ERROR,
"unset cur_pic_ptr on slice %d\n",
h->current_slice + 1);
return AVERROR_INVALIDDATA;
}
}
if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
return AVERROR_INVALIDDATA;
}
assert(h->mb_num == h->mb_width * h->mb_height);
if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
sl->first_mb_addr >= h->mb_num) {
av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
return AVERROR_INVALIDDATA;
}
sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
FIELD_OR_MBAFF_PICTURE(h);
if (h->picture_structure == PICT_BOTTOM_FIELD)
sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
assert(sl->mb_y < h->mb_height);
ret = ff_h264_build_ref_list(h, sl);
if (ret < 0)
return ret;
if (h->ps.pps->weighted_bipred_idc == 2 &&
sl->slice_type_nos == AV_PICTURE_TYPE_B) {
implicit_weight_table(h, sl, -1);
if (FRAME_MBAFF(h)) {
implicit_weight_table(h, sl, 0);
implicit_weight_table(h, sl, 1);
}
}
if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
ff_h264_direct_dist_scale_factor(h, sl);
ff_h264_direct_ref_list_init(h, sl);
if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
(h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
(h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
(h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
nal->ref_idc == 0))
sl->deblocking_filter = 0;
if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
/* Cheat slightly for speed:
* Do not bother to deblock across slices. */
sl->deblocking_filter = 2;
} else {
h->postpone_filter = 1;
}
}
sl->qp_thresh = 15 -
FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
FFMAX3(0,
h->ps.pps->chroma_qp_index_offset[0],
h->ps.pps->chroma_qp_index_offset[1]) +
6 * (h->ps.sps->bit_depth_luma - 8);
sl->slice_num = ++h->current_slice;
if (sl->slice_num >= MAX_SLICES) {
av_log(h->avctx, AV_LOG_ERROR,
"Too many slices, increase MAX_SLICES and recompile\n");
}
for (j = 0; j < 2; j++) {
int id_list[16];
int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
for (i = 0; i < 16; i++) {
id_list[i] = 60;
if (j < sl->list_count && i < sl->ref_count[j] &&
sl->ref_list[j][i].parent->f->buf[0]) {
int k;
AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
for (k = 0; k < h->short_ref_count; k++)
if (h->short_ref[k]->f->buf[0]->buffer == buf) {
id_list[i] = k;
break;
}
for (k = 0; k < h->long_ref_count; k++)
if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
id_list[i] = h->short_ref_count + k;
break;
}
}
}
ref2frm[0] =
ref2frm[1] = -1;
for (i = 0; i < 16; i++)
ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
ref2frm[18 + 0] =
ref2frm[18 + 1] = -1;
for (i = 16; i < 48; i++)
ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
(sl->ref_list[j][i].reference & 3);
}
if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
av_log(h->avctx, AV_LOG_DEBUG,
"slice:%d %s mb:%d %c%s%s frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
sl->slice_num,
(h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
sl->mb_y * h->mb_width + sl->mb_x,
av_get_picture_type_char(sl->slice_type),
sl->slice_type_fixed ? " fix" : "",
nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
h->poc.frame_num,
h->cur_pic_ptr->field_poc[0],
h->cur_pic_ptr->field_poc[1],
sl->ref_count[0], sl->ref_count[1],
sl->qscale,
sl->deblocking_filter,
sl->slice_alpha_c0_offset, sl->slice_beta_offset,
sl->pwt.use_weight,
sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
}
return 0;
}
int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
{
H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
int ret;
sl->gb = nal->gb;
ret = h264_slice_header_parse(sl, nal, &h->ps, h->avctx);
if (ret < 0)
return ret;
// discard redundant pictures
if (sl->redundant_pic_count > 0)
return 0;
if (!h->setup_finished) {
if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
// this slice starts a new field
// first decode any pending queued slices
if (h->nb_slice_ctx_queued) {
H264SliceContext tmp_ctx;
ret = ff_h264_execute_decode_slices(h);
if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
return ret;
memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
sl = h->slice_ctx;
}
if (h->field_started)
ff_h264_field_end(h, sl, 1);
h->current_slice = 0;
if (!h->first_field) {
if (h->cur_pic_ptr && !h->droppable) {
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
h->picture_structure == PICT_BOTTOM_FIELD);
}
h->cur_pic_ptr = NULL;
}
}
if (h->current_slice == 0) {
ret = h264_field_start(h, sl, nal);
if (ret < 0)
return ret;
h->field_started = 1;
}
}
ret = h264_slice_init(h, sl, nal);
if (ret < 0)
return ret;
if ((h->avctx->skip_frame < AVDISCARD_NONREF || nal->ref_idc) &&
(h->avctx->skip_frame < AVDISCARD_BIDIR ||
sl->slice_type_nos != AV_PICTURE_TYPE_B) &&
(h->avctx->skip_frame < AVDISCARD_NONKEY ||
h->cur_pic_ptr->f->key_frame) &&
h->avctx->skip_frame < AVDISCARD_ALL) {
h->nb_slice_ctx_queued++;
}
return 0;
}
int ff_h264_get_slice_type(const H264SliceContext *sl)
{
switch (sl->slice_type) {
case AV_PICTURE_TYPE_P:
return 0;
case AV_PICTURE_TYPE_B:
return 1;
case AV_PICTURE_TYPE_I:
return 2;
case AV_PICTURE_TYPE_SP:
return 3;
case AV_PICTURE_TYPE_SI:
return 4;
default:
return AVERROR_INVALIDDATA;
}
}
static av_always_inline void fill_filter_caches_inter(const H264Context *h,
H264SliceContext *sl,
int mb_type, int top_xy,
int left_xy[LEFT_MBS],
int top_type,
int left_type[LEFT_MBS],
int mb_xy, int list)
{
int b_stride = h->b_stride;
int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
if (USES_LIST(top_type, list)) {
const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
const int b8_xy = 4 * top_xy + 2;
const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
ref_cache[0 - 1 * 8] =
ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
ref_cache[2 - 1 * 8] =
ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
} else {
AV_ZERO128(mv_dst - 1 * 8);
AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
}
if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
if (USES_LIST(left_type[LTOP], list)) {
const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
const int b8_xy = 4 * left_xy[LTOP] + 1;
const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
ref_cache[-1 + 0] =
ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
ref_cache[-1 + 16] =
ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
} else {
AV_ZERO32(mv_dst - 1 + 0);
AV_ZERO32(mv_dst - 1 + 8);
AV_ZERO32(mv_dst - 1 + 16);
AV_ZERO32(mv_dst - 1 + 24);
ref_cache[-1 + 0] =
ref_cache[-1 + 8] =
ref_cache[-1 + 16] =
ref_cache[-1 + 24] = LIST_NOT_USED;
}
}
}
if (!USES_LIST(mb_type, list)) {
fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
return;
}
{
int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
AV_WN32A(&ref_cache[0 * 8], ref01);
AV_WN32A(&ref_cache[1 * 8], ref01);
AV_WN32A(&ref_cache[2 * 8], ref23);
AV_WN32A(&ref_cache[3 * 8], ref23);
}
{
int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
}
}
/**
* @return non zero if the loop filter can be skipped
*/
static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
{
const int mb_xy = sl->mb_xy;
int top_xy, left_xy[LEFT_MBS];
int top_type, left_type[LEFT_MBS];
uint8_t *nnz;
uint8_t *nnz_cache;
top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
if (FRAME_MBAFF(h)) {
const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
const int curr_mb_field_flag = IS_INTERLACED(mb_type);
if (sl->mb_y & 1) {
if (left_mb_field_flag != curr_mb_field_flag)
left_xy[LTOP] -= h->mb_stride;
} else {
if (curr_mb_field_flag)
top_xy += h->mb_stride &
(((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
if (left_mb_field_flag != curr_mb_field_flag)
left_xy[LBOT] += h->mb_stride;
}
}
sl->top_mb_xy = top_xy;
sl->left_mb_xy[LTOP] = left_xy[LTOP];
sl->left_mb_xy[LBOT] = left_xy[LBOT];
{
/* For sufficiently low qp, filtering wouldn't do anything.
* This is a conservative estimate: could also check beta_offset
* and more accurate chroma_qp. */
int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
int qp = h->cur_pic.qscale_table[mb_xy];
if (qp <= qp_thresh &&
(left_xy[LTOP] < 0 ||
((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
(top_xy < 0 ||
((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
if (!FRAME_MBAFF(h))
return 1;
if ((left_xy[LTOP] < 0 ||
((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
(top_xy < h->mb_stride ||
((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
return 1;
}
}
top_type = h->cur_pic.mb_type[top_xy];
left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
if (sl->deblocking_filter == 2) {
if (h->slice_table[top_xy] != sl->slice_num)
top_type = 0;
if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
left_type[LTOP] = left_type[LBOT] = 0;
} else {
if (h->slice_table[top_xy] == 0xFFFF)
top_type = 0;
if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
left_type[LTOP] = left_type[LBOT] = 0;
}
sl->top_type = top_type;
sl->left_type[LTOP] = left_type[LTOP];
sl->left_type[LBOT] = left_type[LBOT];
if (IS_INTRA(mb_type))
return 0;
fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
top_type, left_type, mb_xy, 0);
if (sl->list_count == 2)
fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
top_type, left_type, mb_xy, 1);
nnz = h->non_zero_count[mb_xy];
nnz_cache = sl->non_zero_count_cache;
AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
sl->cbp = h->cbp_table[mb_xy];
if (top_type) {
nnz = h->non_zero_count[top_xy];
AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
}
if (left_type[LTOP]) {
nnz = h->non_zero_count[left_xy[LTOP]];
nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
}
/* CAVLC 8x8dct requires NNZ values for residual decoding that differ
* from what the loop filter needs */
if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
if (IS_8x8DCT(top_type)) {
nnz_cache[4 + 8 * 0] =
nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
nnz_cache[6 + 8 * 0] =
nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
}
if (IS_8x8DCT(left_type[LTOP])) {
nnz_cache[3 + 8 * 1] =
nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
}
if (IS_8x8DCT(left_type[LBOT])) {
nnz_cache[3 + 8 * 3] =
nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
}
if (IS_8x8DCT(mb_type)) {
nnz_cache[scan8[0]] =
nnz_cache[scan8[1]] =
nnz_cache[scan8[2]] =
nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
nnz_cache[scan8[0 + 4]] =
nnz_cache[scan8[1 + 4]] =
nnz_cache[scan8[2 + 4]] =
nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
nnz_cache[scan8[0 + 8]] =
nnz_cache[scan8[1 + 8]] =
nnz_cache[scan8[2 + 8]] =
nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
nnz_cache[scan8[0 + 12]] =
nnz_cache[scan8[1 + 12]] =
nnz_cache[scan8[2 + 12]] =
nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
}
}
return 0;
}
static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
{
uint8_t *dest_y, *dest_cb, *dest_cr;
int linesize, uvlinesize, mb_x, mb_y;
const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
const int old_slice_type = sl->slice_type;
const int pixel_shift = h->pixel_shift;
const int block_h = 16 >> h->chroma_y_shift;
if (h->postpone_filter)
return;
if (sl->deblocking_filter) {
for (mb_x = start_x; mb_x < end_x; mb_x++)
for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
int mb_xy, mb_type;
mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
mb_type = h->cur_pic.mb_type[mb_xy];
if (FRAME_MBAFF(h))
sl->mb_mbaff =
sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
sl->mb_x = mb_x;
sl->mb_y = mb_y;
dest_y = h->cur_pic.f->data[0] +
((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
dest_cb = h->cur_pic.f->data[1] +
(mb_x << pixel_shift) * (8 << CHROMA444(h)) +
mb_y * sl->uvlinesize * block_h;
dest_cr = h->cur_pic.f->data[2] +
(mb_x << pixel_shift) * (8 << CHROMA444(h)) +
mb_y * sl->uvlinesize * block_h;
// FIXME simplify above
if (MB_FIELD(sl)) {
linesize = sl->mb_linesize = sl->linesize * 2;
uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
if (mb_y & 1) { // FIXME move out of this function?
dest_y -= sl->linesize * 15;
dest_cb -= sl->uvlinesize * (block_h - 1);
dest_cr -= sl->uvlinesize * (block_h - 1);
}
} else {
linesize = sl->mb_linesize = sl->linesize;
uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
}
backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
uvlinesize, 0);
if (fill_filter_caches(h, sl, mb_type))
continue;
sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
if (FRAME_MBAFF(h)) {
ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
linesize, uvlinesize);
} else {
ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
dest_cr, linesize, uvlinesize);
}
}
}
sl->slice_type = old_slice_type;
sl->mb_x = end_x;
sl->mb_y = end_mb_y - FRAME_MBAFF(h);
sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
}
static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
{
const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
h->cur_pic.mb_type[mb_xy - 1] :
(h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
}
/**
* Draw edges and report progress for the last MB row.
*/
static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
{
int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
int height = 16 << FRAME_MBAFF(h);
int deblock_border = (16 + 4) << FRAME_MBAFF(h);
if (sl->deblocking_filter) {
if ((top + height) >= pic_height)
height += deblock_border;
top -= deblock_border;
}
if (top >= pic_height || (top + height) < 0)
return;
height = FFMIN(height, pic_height - top);
if (top < 0) {
height = top + height;
top = 0;
}
ff_h264_draw_horiz_band(h, sl, top, height);
if (h->droppable)
return;
ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
h->picture_structure == PICT_BOTTOM_FIELD);
}
static void er_add_slice(H264SliceContext *sl,
int startx, int starty,
int endx, int endy, int status)
{
#if CONFIG_ERROR_RESILIENCE
ERContext *er = &sl->er;
if (!sl->h264->enable_er)
return;
er->ref_count = sl->ref_count[0];
ff_er_add_slice(er, startx, starty, endx, endy, status);
#endif
}
static int decode_slice(struct AVCodecContext *avctx, void *arg)
{
H264SliceContext *sl = arg;
const H264Context *h = sl->h264;
int lf_x_start = sl->mb_x;
int orig_deblock = sl->deblocking_filter;
int ret;
sl->linesize = h->cur_pic_ptr->f->linesize[0];
sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
ret = alloc_scratch_buffers(sl, sl->linesize);
if (ret < 0)
return ret;
sl->mb_skip_run = -1;
if (h->postpone_filter)
sl->deblocking_filter = 0;
sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
(CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
if (h->ps.pps->cabac) {
/* realign */
align_get_bits(&sl->gb);
/* init cabac */
ff_init_cabac_decoder(&sl->cabac,
sl->gb.buffer + get_bits_count(&sl->gb) / 8,
(get_bits_left(&sl->gb) + 7) / 8);
ff_h264_init_cabac_states(h, sl);
for (;;) {
// START_TIMER
int ret, eos;
if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
sl->next_slice_idx);
return AVERROR_INVALIDDATA;
}
ret = ff_h264_decode_mb_cabac(h, sl);
// STOP_TIMER("decode_mb_cabac")
if (ret >= 0)
ff_h264_hl_decode_mb(h, sl);
// FIXME optimal? or let mb_decode decode 16x32 ?
if (ret >= 0 && FRAME_MBAFF(h)) {
sl->mb_y++;
ret = ff_h264_decode_mb_cabac(h, sl);
if (ret >= 0)
ff_h264_hl_decode_mb(h, sl);
sl->mb_y--;
}
eos = get_cabac_terminate(&sl->cabac);
if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
sl->mb_y, ER_MB_END);
if (sl->mb_x >= lf_x_start)
loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
goto finish;
}
if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
av_log(h->avctx, AV_LOG_ERROR,
"error while decoding MB %d %d, bytestream %td\n",
sl->mb_x, sl->mb_y,
sl->cabac.bytestream_end - sl->cabac.bytestream);
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
sl->mb_y, ER_MB_ERROR);
return AVERROR_INVALIDDATA;
}
if (++sl->mb_x >= h->mb_width) {
loop_filter(h, sl, lf_x_start, sl->mb_x);
sl->mb_x = lf_x_start = 0;
decode_finish_row(h, sl);
++sl->mb_y;
if (FIELD_OR_MBAFF_PICTURE(h)) {
++sl->mb_y;
if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
predict_field_decoding_flag(h, sl);
}
}
if (eos || sl->mb_y >= h->mb_height) {
ff_tlog(h->avctx, "slice end %d %d\n",
get_bits_count(&sl->gb), sl->gb.size_in_bits);
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
sl->mb_y, ER_MB_END);
if (sl->mb_x > lf_x_start)
loop_filter(h, sl, lf_x_start, sl->mb_x);
goto finish;
}
}
} else {
for (;;) {
int ret;
if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
sl->next_slice_idx);
return AVERROR_INVALIDDATA;
}
ret = ff_h264_decode_mb_cavlc(h, sl);
if (ret >= 0)
ff_h264_hl_decode_mb(h, sl);
// FIXME optimal? or let mb_decode decode 16x32 ?
if (ret >= 0 && FRAME_MBAFF(h)) {
sl->mb_y++;
ret = ff_h264_decode_mb_cavlc(h, sl);
if (ret >= 0)
ff_h264_hl_decode_mb(h, sl);
sl->mb_y--;
}
if (ret < 0) {
av_log(h->avctx, AV_LOG_ERROR,
"error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
sl->mb_y, ER_MB_ERROR);
return ret;
}
if (++sl->mb_x >= h->mb_width) {
loop_filter(h, sl, lf_x_start, sl->mb_x);
sl->mb_x = lf_x_start = 0;
decode_finish_row(h, sl);
++sl->mb_y;
if (FIELD_OR_MBAFF_PICTURE(h)) {
++sl->mb_y;
if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
predict_field_decoding_flag(h, sl);
}
if (sl->mb_y >= h->mb_height) {
ff_tlog(h->avctx, "slice end %d %d\n",
get_bits_count(&sl->gb), sl->gb.size_in_bits);
if (get_bits_left(&sl->gb) == 0) {
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
sl->mb_x - 1, sl->mb_y, ER_MB_END);
goto finish;
} else {
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
sl->mb_x - 1, sl->mb_y, ER_MB_END);
return AVERROR_INVALIDDATA;
}
}
}
if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
ff_tlog(h->avctx, "slice end %d %d\n",
get_bits_count(&sl->gb), sl->gb.size_in_bits);
if (get_bits_left(&sl->gb) == 0) {
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
sl->mb_x - 1, sl->mb_y, ER_MB_END);
if (sl->mb_x > lf_x_start)
loop_filter(h, sl, lf_x_start, sl->mb_x);
goto finish;
} else {
er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
sl->mb_y, ER_MB_ERROR);
return AVERROR_INVALIDDATA;
}
}
}
}
finish:
sl->deblocking_filter = orig_deblock;
return 0;
}
/**
* Call decode_slice() for each context.
*
* @param h h264 master context
*/
int ff_h264_execute_decode_slices(H264Context *h)
{
AVCodecContext *const avctx = h->avctx;
H264SliceContext *sl;
int context_count = h->nb_slice_ctx_queued;
int ret = 0;
int i, j;
if (h->avctx->hwaccel || context_count < 1)
return 0;
if (context_count == 1) {
h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
h->postpone_filter = 0;
ret = decode_slice(avctx, &h->slice_ctx[0]);
h->mb_y = h->slice_ctx[0].mb_y;
if (ret < 0)
goto finish;
} else {
for (i = 0; i < context_count; i++) {
int next_slice_idx = h->mb_width * h->mb_height;
int slice_idx;
sl = &h->slice_ctx[i];
sl->er.error_count = 0;
/* make sure none of those slices overlap */
slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
for (j = 0; j < context_count; j++) {
H264SliceContext *sl2 = &h->slice_ctx[j];
int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
if (i == j || slice_idx2 < slice_idx)
continue;
next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
}
sl->next_slice_idx = next_slice_idx;
}
avctx->execute(avctx, decode_slice, h->slice_ctx,
NULL, context_count, sizeof(h->slice_ctx[0]));
/* pull back stuff from slices to master context */
sl = &h->slice_ctx[context_count - 1];
h->mb_y = sl->mb_y;
for (i = 1; i < context_count; i++)
h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
if (h->postpone_filter) {
h->postpone_filter = 0;
for (i = 0; i < context_count; i++) {
int y_end, x_end;
sl = &h->slice_ctx[i];
y_end = FFMIN(sl->mb_y + 1, h->mb_height);
x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
sl->mb_y = j;
loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
j == y_end - 1 ? x_end : h->mb_width);
}
}
}
}
finish:
h->nb_slice_ctx_queued = 0;
return ret;
}
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