mpegpicture.c File Reference

#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "motion_est.h"
#include "mpegpicture.h"
#include "mpegutils.h"

Go to the source code of this file.

Macros
#define	MAKE_WRITABLE(table)
#define	UPDATE_TABLE(table)

Functions
static int	make_tables_writable (Picture *pic)
int	ff_mpeg_framesize_alloc (AVCodecContext *avctx, MotionEstContext *me, ScratchpadContext *sc, int linesize)
static int	alloc_frame_buffer (AVCodecContext *avctx, Picture *pic, MotionEstContext *me, ScratchpadContext *sc, int chroma_x_shift, int chroma_y_shift, int linesize, int uvlinesize)
	Allocate a frame buffer. More...
static int	alloc_picture_tables (AVCodecContext *avctx, Picture *pic, int encoding, int out_format, int mb_stride, int mb_width, int mb_height, int b8_stride)
int	ff_alloc_picture (AVCodecContext *avctx, Picture *pic, MotionEstContext *me, ScratchpadContext *sc, int shared, int encoding, int chroma_x_shift, int chroma_y_shift, int out_format, int mb_stride, int mb_width, int mb_height, int b8_stride, ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
	Allocate a Picture. More...
void	ff_mpeg_unref_picture (AVCodecContext *avctx, Picture *pic)
	Deallocate a picture. More...
int	ff_update_picture_tables (Picture *dst, Picture *src)
int	ff_mpeg_ref_picture (AVCodecContext *avctx, Picture *dst, Picture *src)
static int	pic_is_unused (Picture *pic)
static int	find_unused_picture (AVCodecContext *avctx, Picture *picture, int shared)
int	ff_find_unused_picture (AVCodecContext *avctx, Picture *picture, int shared)
void	ff_free_picture_tables (Picture *pic)

Macro Definition Documentation

#define MAKE_WRITABLE

(

table

)

Value:

do {\
    if (pic->table &&\
       (ret = av_buffer_make_writable(&pic->table)) < 0)\
    return ret;\
} while (0)

Referenced by make_tables_writable().

#define UPDATE_TABLE

(

table

)

Value:

do {                                                                          \
    if (src->table &&                                                         \
        (!dst->table || dst->table->buffer != src->table->buffer)) {          \
        av_buffer_unref(&dst->table);                                         \
        dst->table = av_buffer_ref(src->table);                               \
        if (!dst->table) {                                                    \
            ff_free_picture_tables(dst);                                      \
            return AVERROR(ENOMEM);                                           \
        }                                                                     \
    }                                                                         \
} while (0)

Referenced by ff_update_picture_tables().

Function Documentation

static int make_tables_writable ( Picture *  pic )

static

Definition at line 32 of file mpegpicture.c.

Referenced by ff_alloc_picture().

int ff_mpeg_framesize_alloc	(	AVCodecContext *	avctx,
		MotionEstContext *	me,
		ScratchpadContext *	sc,
		int	linesize
	)

Definition at line 57 of file mpegpicture.c.

Referenced by alloc_frame_buffer(), ff_mpeg_update_thread_context(), and ff_update_duplicate_context().

static int alloc_frame_buffer ( AVCodecContext *  avctx, Picture *  pic, MotionEstContext *  me, ScratchpadContext *  sc, int  chroma_x_shift, int  chroma_y_shift, int  linesize, int  uvlinesize  )

static

Allocate a frame buffer.

Definition at line 95 of file mpegpicture.c.

Referenced by ff_alloc_picture().

static int alloc_picture_tables ( AVCodecContext *  avctx, Picture *  pic, int  encoding, int  out_format, int  mb_stride, int  mb_width, int  mb_height, int  b8_stride  )

static

Definition at line 181 of file mpegpicture.c.

Referenced by ff_alloc_picture().

int ff_alloc_picture	(	AVCodecContext *	avctx,
		Picture *	pic,
		MotionEstContext *	me,
		ScratchpadContext *	sc,
		int	shared,
		int	encoding,
		int	chroma_x_shift,
		int	chroma_y_shift,
		int	out_format,
		int	mb_stride,
		int	mb_width,
		int	mb_height,
		int	b8_stride,
		ptrdiff_t *	linesize,
		ptrdiff_t *	uvlinesize
	)

Allocate a Picture.

The pixels are allocated/set by calling get_buffer() if shared = 0

Definition at line 231 of file mpegpicture.c.

Referenced by alloc_picture().

void ff_mpeg_unref_picture	(	AVCodecContext *	avctx,
		Picture *	pic
	)

Deallocate a picture.

Definition at line 294 of file mpegpicture.c.

Referenced by alloc_frame_buffer(), ff_alloc_picture(), ff_find_unused_picture(), ff_mpeg_flush(), ff_mpeg_ref_picture(), ff_mpeg_update_thread_context(), ff_mpv_common_end(), ff_mpv_encode_end(), ff_mpv_encode_picture(), ff_mpv_frame_start(), frame_start(), and select_input_picture().

int ff_update_picture_tables	(	Picture *	dst,
		Picture *	src
	)

Definition at line 316 of file mpegpicture.c.

Referenced by ff_mpeg_ref_picture().

int ff_mpeg_ref_picture	(	AVCodecContext *	avctx,
		Picture *	dst,
		Picture *	src
	)

Definition at line 361 of file mpegpicture.c.

Referenced by ff_mpeg_update_thread_context(), ff_mpv_frame_start(), frame_start(), and select_input_picture().

static int pic_is_unused ( Picture *  pic )

inlinestatic

Definition at line 404 of file mpegpicture.c.

Referenced by find_unused_picture().

static int find_unused_picture ( AVCodecContext *  avctx, Picture *  picture, int  shared  )

static

Definition at line 413 of file mpegpicture.c.

Referenced by ff_find_unused_picture().

int ff_find_unused_picture	(	AVCodecContext *	avctx,
		Picture *	picture,
		int	shared
	)

Definition at line 446 of file mpegpicture.c.

Referenced by ff_h263_decode_frame(), ff_mpv_frame_start(), load_input_picture(), and select_input_picture().

void ff_free_picture_tables

(

Picture *

pic

)

Definition at line 460 of file mpegpicture.c.

Referenced by ff_alloc_picture(), ff_find_unused_picture(), ff_mpeg_unref_picture(), ff_mpv_common_end(), and ff_mpv_encode_end().