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avcodec/h264dec: Move ERContext to H264Context

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Since 7be2d2a70c only one context
is used. Moving it to H264Context from H264SliceContext is natural.

One could access the ERContext from H264SliceContext
via H264SliceContext.h264->er; yet H264SliceContext.h264 should
naturally be const-qualified, because slice threads should not
modify the main context. The ERContext is an exception
to this, as ff_er_add_slice() is intended to be called simultaneously
by multiple threads. And for this one needs a pointer whose
pointed-to-type is not const-qualified.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
release/5.1
Andreas Rheinhardt 3 years ago
parent c4fcfa47df
commit e944ab796d
3 changed files with 56 additions and 68 deletions
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  1. 31
      libavcodec/h264_slice.c
  2. 84
      libavcodec/h264dec.c
  3. 7
      libavcodec/h264dec.h

31
libavcodec/h264_slice.c
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@ -537,7 +537,7 @@ static int h264_frame_start(H264Context *h)
h->cur_pic_ptr = pic;
ff_h264_unref_picture(h, &h->cur_pic);
if (CONFIG_ERROR_RESILIENCE) {
ff_h264_set_erpic(&h->slice_ctx[0].er.cur_pic, NULL);
ff_h264_set_erpic(&h->er.cur_pic, NULL);
}
if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
@ -549,9 +549,9 @@ static int h264_frame_start(H264Context *h)
}
if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
ff_er_frame_start(&h->slice_ctx[0].er);
ff_h264_set_erpic(&h->slice_ctx[0].er.last_pic, NULL);
ff_h264_set_erpic(&h->slice_ctx[0].er.next_pic, NULL);
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++) {
@ -1004,11 +1004,7 @@ static int h264_slice_header_init(H264Context *h)
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");
goto fail;
}
ff_h264_slice_context_init(h, &h->slice_ctx[0]);
} else {
for (i = 0; i < h->nb_slice_ctx; i++) {
H264SliceContext *sl = &h->slice_ctx[i];
@ -1018,10 +1014,7 @@ static int h264_slice_header_init(H264Context *h)
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");
goto fail;
}
ff_h264_slice_context_init(h, sl);
}
}
@ -2667,7 +2660,7 @@ static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
ff_h264_draw_horiz_band(h, sl, top, height);
if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
if (h->droppable || h->er.error_occurred)
return;
ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
@ -2682,9 +2675,7 @@ static void er_add_slice(H264SliceContext *sl,
return;
if (CONFIG_ERROR_RESILIENCE) {
ERContext *er = &sl->h264->slice_ctx[0].er;
ff_er_add_slice(er, startx, starty, endx, endy, status);
ff_er_add_slice(sl->er, startx, starty, endx, endy, status);
}
}
@ -2713,13 +2704,13 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg)
sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
(CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->slice_ctx[0].er.error_status_table) {
if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && sl->er->error_status_table) {
const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
if (start_i) {
int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
int prev_status = sl->er->error_status_table[sl->er->mb_index2xy[start_i - 1]];
prev_status &= ~ VP_START;
if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
h->slice_ctx[0].er.error_occurred = 1;
sl->er->error_occurred = 1;
}
}

84
libavcodec/h264dec.c
Unescape View File

@ -154,14 +154,16 @@ void ff_h264_free_tables(H264Context *h)
av_buffer_pool_uninit(&h->motion_val_pool);
av_buffer_pool_uninit(&h->ref_index_pool);
#if CONFIG_ERROR_RESILIENCE
av_freep(&h->er.mb_index2xy);
av_freep(&h->er.error_status_table);
av_freep(&h->er.er_temp_buffer);
av_freep(&h->dc_val_base);
#endif
for (i = 0; i < h->nb_slice_ctx; i++) {
H264SliceContext *sl = &h->slice_ctx[i];
av_freep(&sl->dc_val_base);
av_freep(&sl->er.mb_index2xy);
av_freep(&sl->er.error_status_table);
av_freep(&sl->er.er_temp_buffer);
av_freep(&sl->bipred_scratchpad);
av_freep(&sl->edge_emu_buffer);
av_freep(&sl->top_borders[0]);
@ -176,6 +178,7 @@ void ff_h264_free_tables(H264Context *h)
int ff_h264_alloc_tables(H264Context *h)
{
ERContext *const er = &h->er;
const int big_mb_num = h->mb_stride * (h->mb_height + 1);
const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
const int st_size = big_mb_num + h->mb_stride;
@ -208,33 +211,11 @@ int ff_h264_alloc_tables(H264Context *h)
h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
}
return 0;
}
/**
* Init context
* Allocate buffers which are not shared amongst multiple threads.
*/
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
{
ERContext *er = &sl->er;
if (CONFIG_ERROR_RESILIENCE) {
const int er_size = h->mb_height * h->mb_stride * (4*sizeof(int) + 1);
int mb_array_size = h->mb_height * h->mb_stride;
int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
int c_size = h->mb_stride * (h->mb_height + 1);
int yc_size = y_size + 2 * c_size;
int x, y, i;
sl->ref_cache[0][scan8[5] + 1] =
sl->ref_cache[0][scan8[7] + 1] =
sl->ref_cache[0][scan8[13] + 1] =
sl->ref_cache[1][scan8[5] + 1] =
sl->ref_cache[1][scan8[7] + 1] =
sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
if (sl != h->slice_ctx) {
memset(er, 0, sizeof(*er));
} else if (CONFIG_ERROR_RESILIENCE) {
const int er_size = h->mb_height * h->mb_stride * (4*sizeof(int) + 1);
int yc_size = y_size + 2 * big_mb_num;
/* init ER */
er->avctx = h->avctx;
@ -252,7 +233,7 @@ int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
if (!FF_ALLOCZ_TYPED_ARRAY(er->mb_index2xy, h->mb_num + 1) ||
!FF_ALLOCZ_TYPED_ARRAY(er->error_status_table, mb_array_size) ||
!FF_ALLOCZ_TYPED_ARRAY(er->er_temp_buffer, er_size) ||
!FF_ALLOCZ_TYPED_ARRAY(sl->dc_val_base, yc_size))
!FF_ALLOCZ_TYPED_ARRAY(h->dc_val_base, yc_size))
return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
for (y = 0; y < h->mb_height; y++)
@ -261,16 +242,31 @@ int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
h->mb_stride + h->mb_width;
er->dc_val[0] = sl->dc_val_base + h->mb_width * 2 + 2;
er->dc_val[1] = sl->dc_val_base + y_size + h->mb_stride + 1;
er->dc_val[2] = er->dc_val[1] + c_size;
for (i = 0; i < yc_size; i++)
sl->dc_val_base[i] = 1024;
er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2;
er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1;
er->dc_val[2] = er->dc_val[1] + big_mb_num;
for (int i = 0; i < yc_size; i++)
h->dc_val_base[i] = 1024;
}
return 0;
}
/**
* Init slice context
*/
void ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
{
sl->ref_cache[0][scan8[5] + 1] =
sl->ref_cache[0][scan8[7] + 1] =
sl->ref_cache[0][scan8[13] + 1] =
sl->ref_cache[1][scan8[5] + 1] =
sl->ref_cache[1][scan8[7] + 1] =
sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
sl->er = &h->er;
}
static int h264_init_pic(H264Picture *pic)
{
pic->f = av_frame_alloc();
@ -739,7 +735,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
goto end;
// set decode_error_flags to allow users to detect concealed decoding errors
if ((ret < 0 || h->slice_ctx->er.error_occurred) && h->cur_pic_ptr) {
if ((ret < 0 || h->er.error_occurred) && h->cur_pic_ptr) {
h->cur_pic_ptr->f->decode_error_flags |= FF_DECODE_ERROR_DECODE_SLICES;
}
@ -764,25 +760,25 @@ end:
H264SliceContext *sl = h->slice_ctx;
int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
ff_h264_set_erpic(&h->er.cur_pic, h->cur_pic_ptr);
if (use_last_pic) {
ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
ff_h264_set_erpic(&h->er.last_pic, &h->last_pic_for_ec);
sl->ref_list[0][0].parent = &h->last_pic_for_ec;
memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
} else if (sl->ref_count[0]) {
ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
ff_h264_set_erpic(&h->er.last_pic, sl->ref_list[0][0].parent);
} else
ff_h264_set_erpic(&sl->er.last_pic, NULL);
ff_h264_set_erpic(&h->er.last_pic, NULL);
if (sl->ref_count[1])
ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
ff_h264_set_erpic(&h->er.next_pic, sl->ref_list[1][0].parent);
sl->er.ref_count = sl->ref_count[0];
h->er.ref_count = sl->ref_count[0];
ff_er_frame_end(&sl->er);
ff_er_frame_end(&h->er);
if (use_last_pic)
memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
}

7
libavcodec/h264dec.h
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@ -170,7 +170,7 @@ typedef struct H264Ref {
typedef struct H264SliceContext {
struct H264Context *h264;
GetBitContext gb;
ERContext er;
ERContext *er;
int slice_num;
int slice_type;
@ -271,7 +271,6 @@ typedef struct H264SliceContext {
unsigned int pps_id;
const uint8_t *intra_pcm_ptr;
int16_t *dc_val_base;
uint8_t *bipred_scratchpad;
uint8_t *edge_emu_buffer;
@ -543,6 +542,8 @@ typedef struct H264Context {
int height_from_caller;
int enable_er;
ERContext er;
int16_t *dc_val_base;
H264SEIContext sei;
@ -784,7 +785,7 @@ int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src);
int ff_h264_replace_picture(H264Context *h, H264Picture *dst, const H264Picture *src);
void ff_h264_unref_picture(H264Context *h, H264Picture *pic);
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl);
void ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl);
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height);

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