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h264_slice.c
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/*
* H.26L/H.264/AVC/JVT/14496-10/... decoder
* Copyright (c) 2003 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* H.264 / AVC / MPEG-4 part10 codec.
* @author Michael Niedermayer <[email protected]>
*/
#include "config_components.h"
#include "libavutil/avassert.h"
#include "libavutil/display.h"
#include "libavutil/film_grain_params.h"
#include "libavutil/pixdesc.h"
#include "libavutil/stereo3d.h"
#include "libavutil/timecode.h"
#include "internal.h"
#include "cabac.h"
#include "cabac_functions.h"
#include "decode.h"
#include "error_resilience.h"
#include "avcodec.h"
#include "h264.h"
#include "h264dec.h"
#include "h264data.h"
#include "h264chroma.h"
#include "h264_ps.h"
#include "golomb.h"
#include "mathops.h"
#include "mpegutils.h"
#include "rectangle.h"
#include "thread.h"
#include "threadframe.h"
static const uint8_t field_scan[16+1] = {
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+1] = {
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+1] = {
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+1] = {
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_mallocz(&sl->top_borders[0], &sl->top_borders_allocated[0],
h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
av_fast_mallocz(&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_ext_buffer(h->avctx, &pic->tf,
pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
if (ret < 0)
goto fail;
if (pic->needs_fg) {
pic->f_grain->format = pic->f->format;
pic->f_grain->width = pic->f->width;
pic->f_grain->height = pic->f->height;
ret = ff_thread_get_buffer(h->avctx, pic->f_grain, 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 (CONFIG_GRAY && !h->avctx->hwaccel && h->flags & AV_CODEC_FLAG_GRAY && pic->f->data[2]) {
int h_chroma_shift, v_chroma_shift;
av_pix_fmt_get_chroma_sub_sample(pic->f->format,
&h_chroma_shift, &v_chroma_shift);
for(i=0; i<AV_CEIL_RSHIFT(pic->f->height, v_chroma_shift); i++) {
memset(pic->f->data[1] + pic->f->linesize[1]*i,
0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
memset(pic->f->data[2] + pic->f->linesize[2]*i,
0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
}
}
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;
}
pic->pps_buf = av_buffer_ref(h->ps.pps_ref);
if (!pic->pps_buf)
goto fail;
pic->pps = (const PPS*)pic->pps_buf->data;
pic->mb_width = h->mb_width;
pic->mb_height = h->mb_height;
pic->mb_stride = h->mb_stride;
return 0;
fail:
ff_h264_unref_picture(h, pic);
return (ret < 0) ? ret : AVERROR(ENOMEM);
}
static int find_unused_picture(H264Context *h)
{
int i;
for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
if (!h->DPB[i].f->buf[0])
return i;
}
return AVERROR_INVALIDDATA;
}
#define IN_RANGE(a, b, size) (((void*)(a) >= (void*)(b)) && ((void*)(a) < (void*)((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++) {
av_assert1(!from[i] ||
IN_RANGE(from[i], old_base, 1) ||
IN_RANGE(from[i], old_base->DPB, H264_MAX_PICTURE_COUNT));
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)
return 0;
if (inited && !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;
}
/* copy block_offset since frame_start may not be called */
memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
// SPS/PPS
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
ret = av_buffer_replace(&h->ps.sps_list[i], h1->ps.sps_list[i]);
if (ret < 0)
return ret;
}
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
ret = av_buffer_replace(&h->ps.pps_list[i], h1->ps.pps_list[i]);
if (ret < 0)
return ret;
}
ret = av_buffer_replace(&h->ps.pps_ref, h1->ps.pps_ref);
if (ret < 0)
return ret;
h->ps.pps = NULL;
h->ps.sps = NULL;
if (h1->ps.pps_ref) {
h->ps.pps = (const PPS*)h->ps.pps_ref->data;
h->ps.sps = h->ps.pps->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;
h->x264_build = h1->x264_build;
if (h->context_initialized || h1->context_initialized) {
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++) {
ret = ff_h264_replace_picture(h, &h->DPB[i], &h1->DPB[i]);
if (ret < 0)
return ret;
}
h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
ret = ff_h264_replace_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_output_pic = h1->next_output_pic;
h->next_outputed_poc = h1->next_outputed_poc;
h->poc_offset = h1->poc_offset;
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,
FF_ARRAY_ELEMS(h->delayed_pic), h, h1);
h->frame_recovered = h1->frame_recovered;
ret = av_buffer_replace(&h->sei.a53_caption.buf_ref, h1->sei.a53_caption.buf_ref);
if (ret < 0)
return ret;
for (i = 0; i < h->sei.unregistered.nb_buf_ref; i++)
av_buffer_unref(&h->sei.unregistered.buf_ref[i]);
h->sei.unregistered.nb_buf_ref = 0;
if (h1->sei.unregistered.nb_buf_ref) {
ret = av_reallocp_array(&h->sei.unregistered.buf_ref,
h1->sei.unregistered.nb_buf_ref,
sizeof(*h->sei.unregistered.buf_ref));
if (ret < 0)
return ret;
for (i = 0; i < h1->sei.unregistered.nb_buf_ref; i++) {
h->sei.unregistered.buf_ref[i] = av_buffer_ref(h1->sei.unregistered.buf_ref[i]);
if (!h->sei.unregistered.buf_ref[i])
return AVERROR(ENOMEM);
h->sei.unregistered.nb_buf_ref++;
}
}
h->sei.unregistered.x264_build = h1->sei.unregistered.x264_build;
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;
return err;
}
int ff_h264_update_thread_context_for_user(AVCodecContext *dst,
const AVCodecContext *src)
{
H264Context *h = dst->priv_data;
const H264Context *h1 = src->priv_data;
h->is_avc = h1->is_avc;
h->nal_length_size = h1->nal_length_size;
return 0;
}
static int h264_frame_start(H264Context *h)
{
H264Picture *pic;
int i, ret;
const int pixel_shift = h->pixel_shift;
if (!ff_thread_can_start_frame(h->avctx)) {
av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
return -1;
}
release_unused_pictures(h, 1);
h->cur_pic_ptr = NULL;
i = find_unused_picture(h);
if (i < 0) {
av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
return i;
}
pic = &h->DPB[i];
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->invalid_gap = 0;
pic->sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
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;
pic->needs_fg = h->sei.film_grain_characteristics.present && !h->avctx->hwaccel &&
!(h->avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN);
if ((ret = alloc_picture(h, pic)) < 0)
return ret;
h->cur_pic_ptr = pic;
ff_h264_unref_picture(h, &h->cur_pic);
if (CONFIG_ERROR_RESILIENCE) {
ff_h264_set_erpic(&h->er.cur_pic, NULL);
}
if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
return ret;
for (i = 0; i < h->nb_slice_ctx; i++) {
h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
}
if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
ff_er_frame_start(&h->er);
ff_h264_set_erpic(&h->er.last_pic, NULL);
ff_h264_set_erpic(&h->er.next_pic, NULL);
}
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);
}
/* 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->next_output_pic = NULL;
h->postpone_filter = 0;
h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
if (h->sei.unregistered.x264_build >= 0)
h->x264_build = h->sei.unregistered.x264_build;
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 + (int64_t)sl->ref_list[1][0].poc == 2LL * 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++) {
int64_t 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
memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
} else {
memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
}
}
static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
{
#define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
(CONFIG_H264_D3D11VA_HWACCEL * 2) + \
CONFIG_H264_NVDEC_HWACCEL + \
CONFIG_H264_VAAPI_HWACCEL + \
CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
CONFIG_H264_VDPAU_HWACCEL)
enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
const enum AVPixelFormat *choices = pix_fmts;
int i;
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 CONFIG_H264_VIDEOTOOLBOX_HWACCEL
if (h->avctx->colorspace != AVCOL_SPC_RGB)
*fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
#endif
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 12:
if (CHROMA444(h)) {
if (h->avctx->colorspace == AVCOL_SPC_RGB) {
*fmt++ = AV_PIX_FMT_GBRP12;
} else
*fmt++ = AV_PIX_FMT_YUV444P12;
} else if (CHROMA422(h))
*fmt++ = AV_PIX_FMT_YUV422P12;
else
*fmt++ = AV_PIX_FMT_YUV420P12;
break;
case 14:
if (CHROMA444(h)) {
if (h->avctx->colorspace == AVCOL_SPC_RGB) {
*fmt++ = AV_PIX_FMT_GBRP14;
} else
*fmt++ = AV_PIX_FMT_YUV444P14;
} else if (CHROMA422(h))
*fmt++ = AV_PIX_FMT_YUV422P14;
else
*fmt++ = AV_PIX_FMT_YUV420P14;
break;
case 8:
#if CONFIG_H264_VDPAU_HWACCEL
*fmt++ = AV_PIX_FMT_VDPAU;
#endif
#if CONFIG_H264_NVDEC_HWACCEL
*fmt++ = AV_PIX_FMT_CUDA;
#endif
#if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
if (h->avctx->colorspace != AVCOL_SPC_RGB)
*fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
#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 (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;
for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
if (choices[i] == h->avctx->pix_fmt && !force_callback)
return choices[i];
return ff_thread_get_format(h->avctx, choices);
}
/* export coded and cropped frame dimensions to AVCodecContext */
static void init_dimensions(H264Context *h)
{
const SPS *sps = (const 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);
av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
/* 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) &&
h->width_from_caller <= width &&
h->height_from_caller <= height) {
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;
}
static int h264_slice_header_init(H264Context *h)
{
const SPS *sps = h->ps.sps;
int i, ret;
if (!sps) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
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->x264_build < 44U)
den *= 2;
av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
sps->num_units_in_tick * h->avctx->ticks_per_frame, 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");
goto fail;
}
if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
) {
av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
sps->bit_depth_luma);
ret = AVERROR_INVALIDDATA;
goto fail;
}
h->cur_bit_depth_luma =
h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
h->cur_chroma_format_idc = sps->chroma_format_idc;
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);