mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-29 10:52:20 +00:00
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/*
|
|
* Audio Frame Queue
|
|
* Copyright (c) 2012 Justin Ruggles
|
|
*
|
|
* 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_AUDIO_FRAME_QUEUE_H
|
|
#define AVCODEC_AUDIO_FRAME_QUEUE_H
|
|
|
|
#include "avcodec.h"
|
|
|
|
typedef struct AudioFrame {
|
|
int64_t pts;
|
|
int duration;
|
|
} AudioFrame;
|
|
|
|
typedef struct AudioFrameQueue {
|
|
AVCodecContext *avctx;
|
|
int remaining_delay;
|
|
int remaining_samples;
|
|
AudioFrame *frames;
|
|
unsigned frame_count;
|
|
unsigned frame_alloc;
|
|
} AudioFrameQueue;
|
|
|
|
/**
|
|
* Initialize AudioFrameQueue.
|
|
*
|
|
* @param avctx context to use for time_base and av_log
|
|
* @param afq queue context
|
|
*/
|
|
void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq);
|
|
|
|
/**
|
|
* Close AudioFrameQueue.
|
|
*
|
|
* Frees memory if needed.
|
|
*
|
|
* @param afq queue context
|
|
*/
|
|
void ff_af_queue_close(AudioFrameQueue *afq);
|
|
|
|
/**
|
|
* Add a frame to the queue.
|
|
*
|
|
* @param afq queue context
|
|
* @param f frame to add to the queue
|
|
*/
|
|
int ff_af_queue_add(AudioFrameQueue *afq, const AVFrame *f);
|
|
|
|
/**
|
|
* Remove frame(s) from the queue.
|
|
*
|
|
* Retrieves the pts of the next available frame, or a generated pts based on
|
|
* the last frame duration if there are no frames left in the queue. The number
|
|
* of requested samples should be the full number of samples represented by the
|
|
* packet that will be output by the encoder. If fewer samples are available
|
|
* in the queue, a smaller value will be used for the output duration.
|
|
*
|
|
* @param afq queue context
|
|
* @param nb_samples number of samples to remove from the queue
|
|
* @param[out] pts output packet pts
|
|
* @param[out] duration output packet duration
|
|
*/
|
|
void ff_af_queue_remove(AudioFrameQueue *afq, int nb_samples, int64_t *pts,
|
|
int *duration);
|
|
|
|
#endif /* AVCODEC_AUDIO_FRAME_QUEUE_H */
|