/* * Codec parameters public API * * 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_CODEC_PAR_H #define AVCODEC_CODEC_PAR_H #include <stdint.h> #include "libavutil/avutil.h" #include "libavutil/channel_layout.h" #include "libavutil/rational.h" #include "libavutil/pixfmt.h" #include "codec_id.h" #include "defs.h" #include "packet.h" /** * @addtogroup lavc_core * @{ */ /** * This struct describes the properties of an encoded stream. * * sizeof(AVCodecParameters) is not a part of the public ABI, this struct must * be allocated with avcodec_parameters_alloc() and freed with * avcodec_parameters_free(). */ AVCodecParameters; /** * Allocate a new AVCodecParameters and set its fields to default values * (unknown/invalid/0). The returned struct must be freed with * avcodec_parameters_free(). */ AVCodecParameters *avcodec_parameters_alloc(void); /** * Free an AVCodecParameters instance and everything associated with it and * write NULL to the supplied pointer. */ void avcodec_parameters_free(AVCodecParameters **par); /** * Copy the contents of src to dst. Any allocated fields in dst are freed and * replaced with newly allocated duplicates of the corresponding fields in src. * * @return >= 0 on success, a negative AVERROR code on failure. */ int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src); /** * This function is the same as av_get_audio_frame_duration(), except it works * with AVCodecParameters instead of an AVCodecContext. */ int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes); /** * @} */ #endif // AVCODEC_CODEC_PAR_H