mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
0172deccc4
H.264 and H.265 levels' names are usually of the form "x" or "x.y" with x and y being single digits; the one exception are the H.264 1b levels. All of those levels' names fit into a char[4] and it is likely that this future levels will do so, too. Therefore this commit changes the H26(4|5)LevelDescriptor structures to use such a char [4] instead of a pointer to a const char. This makes the structures smaller (when sizeof(char*) == 8) and avoids relocations, thereby moving the corresponding arrays from .data.rel.ro into .rodata. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVCODEC_H264_LEVELS_H
|
|
#define AVCODEC_H264_LEVELS_H
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef struct H264LevelDescriptor {
|
|
char name[4]; // Large enough for all current levels like "4.1"
|
|
uint8_t level_idc;
|
|
uint8_t constraint_set3_flag;
|
|
uint32_t max_mbps;
|
|
uint32_t max_fs;
|
|
uint32_t max_dpb_mbs;
|
|
uint32_t max_br;
|
|
uint32_t max_cpb;
|
|
uint16_t max_v_mv_r;
|
|
uint8_t min_cr;
|
|
uint8_t max_mvs_per_2mb;
|
|
} H264LevelDescriptor;
|
|
|
|
/**
|
|
* Guess the level of a stream from some parameters.
|
|
*
|
|
* Unknown parameters may be zero, in which case they are ignored.
|
|
*/
|
|
const H264LevelDescriptor *ff_h264_guess_level(int profile_idc,
|
|
int64_t bitrate,
|
|
int framerate,
|
|
int width, int height,
|
|
int max_dec_frame_buffering);
|
|
|
|
|
|
#endif /* AVCODEC_H264_LEVELS_H */
|