/* * 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
*/
typedefstruct AudioFrame {
int64_t pts; int duration;
} AudioFrame;
typedefstruct 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,
int64_t *duration);
#endif/* AVCODEC_AUDIO_FRAME_QUEUE_H */
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