repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Audio Frame Queue | |
| 3 | * Copyright (c) 2012 Justin Ruggles | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef AVCODEC_AUDIO_FRAME_QUEUE_H | |
| 23 | #define AVCODEC_AUDIO_FRAME_QUEUE_H | |
| 24 | ||
| 25 | #include "avcodec.h" | |
| 26 | ||
| 27 | typedef struct AudioFrame { | |
| 28 | int64_t pts; | |
| 29 | int duration; | |
| 30 | } AudioFrame; | |
| 31 | ||
| 32 | typedef struct AudioFrameQueue { | |
| 33 | AVCodecContext *avctx; | |
| 34 | int remaining_delay; | |
| 35 | int remaining_samples; | |
| 36 | AudioFrame *frames; | |
| 37 | unsigned frame_count; | |
| 38 | unsigned frame_alloc; | |
| 39 | } AudioFrameQueue; | |
| 40 | ||
| 41 | /** | |
| 42 | * Initialize AudioFrameQueue. | |
| 43 | * | |
| 44 | * @param avctx context to use for time_base and av_log | |
| 45 | * @param afq queue context | |
| 46 | */ | |
| 47 | void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq); | |
| 48 | ||
| 49 | /** | |
| 50 | * Close AudioFrameQueue. | |
| 51 | * | |
| 52 | * Frees memory if needed. | |
| 53 | * | |
| 54 | * @param afq queue context | |
| 55 | */ | |
| 56 | void ff_af_queue_close(AudioFrameQueue *afq); | |
| 57 | ||
| 58 | /** | |
| 59 | * Add a frame to the queue. | |
| 60 | * | |
| 61 | * @param afq queue context | |
| 62 | * @param f frame to add to the queue | |
| 63 | */ | |
| 64 | int ff_af_queue_add(AudioFrameQueue *afq, const AVFrame *f); | |
| 65 | ||
| 66 | /** | |
| 67 | * Remove frame(s) from the queue. | |
| 68 | * | |
| 69 | * Retrieves the pts of the next available frame, or a generated pts based on | |
| 70 | * the last frame duration if there are no frames left in the queue. The number | |
| 71 | * of requested samples should be the full number of samples represented by the | |
| 72 | * packet that will be output by the encoder. If fewer samples are available | |
| 73 | * in the queue, a smaller value will be used for the output duration. | |
| 74 | * | |
| 75 | * @param afq queue context | |
| 76 | * @param nb_samples number of samples to remove from the queue | |
| 77 | * @param[out] pts output packet pts | |
| 78 | * @param[out] duration output packet duration | |
| 79 | */ | |
| 80 | void ff_af_queue_remove(AudioFrameQueue *afq, int nb_samples, int64_t *pts, | |
| 81 | int *duration); | |
| 82 | ||
| 83 | #endif /* AVCODEC_AUDIO_FRAME_QUEUE_H */ |