89ca63cc9c
ff_alloc_picture() currently does two things: It checks the consistency of the linesize (which should not be necessary, but is) and it allocates certain buffers. (It does not actually allocate the picture buffers, so its name is misleading.) This commit splits it into two separate functions. The rationale for this is that for the encoders, every picture needs its linesizes checked, but not every picture needs these extra buffers. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
122 lines
4.1 KiB
C
122 lines
4.1 KiB
C
/*
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* Mpeg video formats-related defines and utility functions
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_MPEGPICTURE_H
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#define AVCODEC_MPEGPICTURE_H
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#include <stddef.h>
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#include <stdint.h>
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#include "avcodec.h"
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#include "motion_est.h"
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#include "threadframe.h"
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#define MPV_MAX_PLANES 3
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#define MAX_PICTURE_COUNT 36
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#define EDGE_WIDTH 16
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typedef struct ScratchpadContext {
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uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
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uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
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uint8_t *obmc_scratchpad;
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uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
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int linesize; ///< linesize that the buffers in this context have been allocated for
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} ScratchpadContext;
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typedef struct BufferPoolContext {
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struct FFRefStructPool *mbskip_table_pool;
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struct FFRefStructPool *qscale_table_pool;
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struct FFRefStructPool *mb_type_pool;
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struct FFRefStructPool *motion_val_pool;
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struct FFRefStructPool *ref_index_pool;
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int alloc_mb_width; ///< mb_width used to allocate tables
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int alloc_mb_height; ///< mb_height used to allocate tables
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int alloc_mb_stride; ///< mb_stride used to allocate tables
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} BufferPoolContext;
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/**
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* Picture.
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*/
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typedef struct Picture {
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struct AVFrame *f;
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ThreadFrame tf;
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uint8_t *data[MPV_MAX_PLANES];
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ptrdiff_t linesize[MPV_MAX_PLANES];
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int8_t *qscale_table_base;
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int8_t *qscale_table;
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int16_t (*motion_val_base[2])[2];
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int16_t (*motion_val[2])[2];
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uint32_t *mb_type_base;
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uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
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uint8_t *mbskip_table;
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int8_t *ref_index[2];
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/// RefStruct reference for hardware accelerator private data
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void *hwaccel_picture_private;
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int mb_width; ///< mb_width of the tables
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int mb_height; ///< mb_height of the tables
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int mb_stride; ///< mb_stride of the tables
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int dummy; ///< Picture is a dummy and should not be output
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int field_picture; ///< whether or not the picture was encoded in separate fields
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int b_frame_score;
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int reference;
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int shared;
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int display_picture_number;
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int coded_picture_number;
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} Picture;
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/**
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* Allocate a Picture's accessories, but not the AVFrame's buffer itself.
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*/
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int ff_mpv_alloc_pic_accessories(AVCodecContext *avctx, Picture *pic,
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MotionEstContext *me, ScratchpadContext *sc,
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BufferPoolContext *pools, int mb_height);
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/**
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* Check that the linesizes of an AVFrame are consistent with the requirements
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* of mpegvideo.
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* FIXME: There should be no need for this function. mpegvideo should be made
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* to work with changing linesizes.
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*/
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int ff_mpv_pic_check_linesize(void *logctx, const struct AVFrame *f,
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ptrdiff_t *linesizep, ptrdiff_t *uvlinesizep);
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int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
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ScratchpadContext *sc, int linesize);
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int ff_mpeg_ref_picture(Picture *dst, Picture *src);
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void ff_mpeg_unref_picture(Picture *picture);
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void ff_mpv_picture_free(Picture *pic);
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int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared);
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#endif /* AVCODEC_MPEGPICTURE_H */
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