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
/*
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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_H264_LEVELS_H
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#define AVCODEC_H264_LEVELS_H
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#include <stdint.h>
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typedef struct H264LevelDescriptor {
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char name[4]; // Large enough for all current levels like "4.1"
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uint8_t level_idc;
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uint8_t constraint_set3_flag;
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uint32_t max_mbps;
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uint32_t max_fs;
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uint32_t max_dpb_mbs;
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uint32_t max_br;
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uint32_t max_cpb;
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uint16_t max_v_mv_r;
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uint8_t min_cr;
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uint8_t max_mvs_per_2mb;
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} H264LevelDescriptor;
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/**
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* Guess the level of a stream from some parameters.
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*
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* Unknown parameters may be zero, in which case they are ignored.
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*/
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const H264LevelDescriptor *ff_h264_guess_level(int profile_idc,
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int64_t bitrate,
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int framerate,
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int width, int height,
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int max_dec_frame_buffering);
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#endif /* AVCODEC_H264_LEVELS_H */
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