| /* | |
| * 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 | |
| */ | |
| 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, | |
| int64_t *duration); | |