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avcodec/mpegpicture: Avoid MotionEstContext in ff_mpeg_framesize_alloc()

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Only set the ScratchpadContext and let the users that need it
(i.e. encoders) set the MotionEstContext stuff themselves.
Also add an explicit pointer to ScratchpadContext to point
to the allocated buffer so that none of the other scratchpad
pointers is singled out as being used for the allocations.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-04-19 09:23:36 +02:00
parent d0f76e6a11
commit a05eebee99
6 changed files with 24 additions and 30 deletions
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18
libavcodec/mpegpicture.c
View File

@ -25,7 +25,6 @@
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "motion_est.h"
#include "mpegpicture.h"
#include "refstruct.h"
@ -136,8 +135,8 @@ void ff_mpv_workpic_from_pic(MPVWorkPicture *wpic, MPVPicture *pic)
set_workpic_from_pic(wpic, pic);
}
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
ScratchpadContext *sc, int linesize)
int ff_mpv_framesize_alloc(AVCodecContext *avctx,
ScratchpadContext *sc, int linesize)
{
# define EMU_EDGE_HEIGHT (4 * 70)
int linesizeabs = FFABS(linesize);
@ -158,7 +157,7 @@ int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
return AVERROR(ENOMEM);
av_freep(&sc->edge_emu_buffer);
av_freep(&me->scratchpad);
av_freep(&sc->scratchpad_buf);
// edge emu needs blocksize + filter length - 1
// (= 17x17 for halfpel / 21x21 for H.264)
@ -167,16 +166,14 @@ int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
// linesize * interlaced * MBsize
// we also use this buffer for encoding in encode_mb_internal() needig an additional 32 lines
if (!FF_ALLOCZ_TYPED_ARRAY(sc->edge_emu_buffer, alloc_size * EMU_EDGE_HEIGHT) ||
!FF_ALLOCZ_TYPED_ARRAY(me->scratchpad, alloc_size * 4 * 16 * 2)) {
!FF_ALLOCZ_TYPED_ARRAY(sc->scratchpad_buf, alloc_size * 4 * 16 * 2)) {
sc->linesize = 0;
av_freep(&sc->edge_emu_buffer);
return AVERROR(ENOMEM);
}
sc->linesize = linesizeabs;
me->temp = me->scratchpad;
sc->b_scratchpad = me->scratchpad;
sc->obmc_scratchpad = me->scratchpad + 16;
sc->obmc_scratchpad = sc->scratchpad_buf + 16;
return 0;
}
@ -238,14 +235,13 @@ static int alloc_picture_tables(BufferPoolContext *pools, MPVPicture *pic,
}
int ff_mpv_alloc_pic_accessories(AVCodecContext *avctx, MPVWorkPicture *wpic,
MotionEstContext *me, ScratchpadContext *sc,
ScratchpadContext *sc,
BufferPoolContext *pools, int mb_height)
{
MPVPicture *pic = wpic->ptr;
int ret;
ret = ff_mpeg_framesize_alloc(avctx, me, sc,
pic->f->linesize[0]);
ret = ff_mpv_framesize_alloc(avctx, sc, pic->f->linesize[0]);
if (ret < 0)
goto fail;

8
libavcodec/mpegpicture.h
View File

@ -25,7 +25,6 @@
#include <stdint.h>
#include "avcodec.h"
#include "motion_est.h"
#include "threadprogress.h"
#define MPV_MAX_PLANES 3
@ -35,6 +34,7 @@ typedef struct ScratchpadContext {
uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
uint8_t *obmc_scratchpad;
union {
uint8_t *scratchpad_buf; ///< the other *_scratchpad point into this buffer
uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
};
@ -121,7 +121,7 @@ struct FFRefStructPool *ff_mpv_alloc_pic_pool(int init_progress);
* and set the MPVWorkPicture's fields.
*/
int ff_mpv_alloc_pic_accessories(AVCodecContext *avctx, MPVWorkPicture *pic,
MotionEstContext *me, ScratchpadContext *sc,
ScratchpadContext *sc,
BufferPoolContext *pools, int mb_height);
/**
@ -133,8 +133,8 @@ int ff_mpv_alloc_pic_accessories(AVCodecContext *avctx, MPVWorkPicture *pic,
int ff_mpv_pic_check_linesize(void *logctx, const struct AVFrame *f,
ptrdiff_t *linesizep, ptrdiff_t *uvlinesizep);
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
ScratchpadContext *sc, int linesize);
int ff_mpv_framesize_alloc(AVCodecContext *avctx,
ScratchpadContext *sc, int linesize);
void ff_mpv_unref_picture(MPVWorkPicture *pic);
void ff_mpv_workpic_from_pic(MPVWorkPicture *wpic, MPVPicture *pic);

10
libavcodec/mpegvideo.c
View File

@ -438,9 +438,8 @@ static void free_duplicate_context(MpegEncContext *s)
return;
av_freep(&s->sc.edge_emu_buffer);
av_freep(&s->me.scratchpad);
s->me.temp =
s->sc.b_scratchpad =
av_freep(&s->sc.scratchpad_buf);
s->me.temp = s->me.scratchpad =
s->sc.obmc_scratchpad = NULL;
s->sc.linesize = 0;
@ -465,8 +464,6 @@ static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
{
#define COPY(a) bak->a = src->a
COPY(sc);
COPY(me.scratchpad);
COPY(me.temp);
COPY(me.map);
COPY(me.score_map);
COPY(blocks);
@ -500,8 +497,7 @@ int ff_update_duplicate_context(MpegEncContext *dst, const MpegEncContext *src)
// exchange uv
FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
}
ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
&dst->sc, dst->linesize);
ret = ff_mpv_framesize_alloc(dst->avctx, &dst->sc, dst->linesize);
if (ret < 0) {
av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
"scratch buffers.\n");

5
libavcodec/mpegvideo_dec.c
View File

@ -155,8 +155,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
}
// linesize-dependent scratch buffer allocation
ret = ff_mpeg_framesize_alloc(s->avctx, &s->me,
&s->sc, s1->linesize);
ret = ff_mpv_framesize_alloc(s->avctx, &s->sc, s1->linesize);
if (ret < 0) {
av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
"scratch buffers.\n");
@ -264,7 +263,7 @@ static int alloc_picture(MpegEncContext *s, MPVWorkPicture *dst, int reference)
av_assert1(s->mb_height == s->buffer_pools.alloc_mb_height ||
FFALIGN(s->mb_height, 2) == s->buffer_pools.alloc_mb_height);
av_assert1(s->mb_stride == s->buffer_pools.alloc_mb_stride);
ret = ff_mpv_alloc_pic_accessories(s->avctx, dst, &s->me, &s->sc,
ret = ff_mpv_alloc_pic_accessories(s->avctx, dst, &s->sc,
&s->buffer_pools, s->mb_height);
if (ret < 0)
goto fail;

7
libavcodec/mpegvideo_enc.c
View File

@ -1663,12 +1663,13 @@ static int select_input_picture(MpegEncContext *s)
av_assert1(s->mb_width == s->buffer_pools.alloc_mb_width);
av_assert1(s->mb_height == s->buffer_pools.alloc_mb_height);
av_assert1(s->mb_stride == s->buffer_pools.alloc_mb_stride);
ret = ff_mpv_alloc_pic_accessories(s->avctx, &s->cur_pic, &s->me,
ret = ff_mpv_alloc_pic_accessories(s->avctx, &s->cur_pic,
&s->sc, &s->buffer_pools, s->mb_height);
if (ret < 0) {
ff_mpv_unref_picture(&s->cur_pic);
return ret;
}
s->me.temp = s->me.scratchpad = s->sc.scratchpad_buf;
s->picture_number = s->cur_pic.ptr->display_picture_number;
}
@ -3616,9 +3617,11 @@ static int encode_picture(MpegEncContext *s)
s->mb_intra=0; //for the rate distortion & bit compare functions
for(i=1; i<context_count; i++){
ret = ff_update_duplicate_context(s->thread_context[i], s);
MpegEncContext *const slice = s->thread_context[i];
ret = ff_update_duplicate_context(slice, s);
if (ret < 0)
return ret;
slice->me.temp = slice->me.scratchpad = slice->sc.scratchpad_buf;
}
/* Estimate motion for every MB */

6
libavcodec/svq1enc.c
View File

@ -543,15 +543,15 @@ static av_cold int svq1_encode_end(AVCodecContext *avctx)
s->rd_total / (double)(avctx->width * avctx->height *
avctx->frame_num));
s->m.mb_type = NULL;
ff_mpv_common_end(&s->m);
av_freep(&s->m.me.scratchpad);
av_freep(&s->m.me.map);
av_freep(&s->mb_type);
av_freep(&s->dummy);
av_freep(&s->scratchbuf);
s->m.mb_type = NULL;
ff_mpv_common_end(&s->m);
for (i = 0; i < 3; i++) {
av_freep(&s->motion_val8[i]);
av_freep(&s->motion_val16[i]);