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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Audio Frame Queue |
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| 3 | * Copyright (c) 2012 Justin Ruggles |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #ifndef AVCODEC_AUDIO_FRAME_QUEUE_H |
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| 23 | #define AVCODEC_AUDIO_FRAME_QUEUE_H |
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| 24 | |||
| 25 | #include "avcodec.h" |
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| 26 | |||
| 27 | typedef struct AudioFrame { |
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| 28 | int64_t pts; |
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| 29 | int duration; |
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| 30 | } AudioFrame; |
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| 31 | |||
| 32 | typedef struct AudioFrameQueue { |
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| 33 | AVCodecContext *avctx; |
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| 34 | int remaining_delay; |
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| 35 | int remaining_samples; |
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| 36 | AudioFrame *frames; |
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| 37 | unsigned frame_count; |
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| 38 | unsigned frame_alloc; |
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| 39 | } AudioFrameQueue; |
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| 40 | |||
| 41 | /** |
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| 42 | * Initialize AudioFrameQueue. |
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| 43 | * |
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| 44 | * @param avctx context to use for time_base and av_log |
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| 45 | * @param afq queue context |
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| 46 | */ |
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| 47 | void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq); |
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| 48 | |||
| 49 | /** |
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| 50 | * Close AudioFrameQueue. |
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| 51 | * |
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| 52 | * Frees memory if needed. |
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| 53 | * |
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| 54 | * @param afq queue context |
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| 55 | */ |
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| 56 | void ff_af_queue_close(AudioFrameQueue *afq); |
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| 57 | |||
| 58 | /** |
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| 59 | * Add a frame to the queue. |
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| 60 | * |
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| 61 | * @param afq queue context |
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| 62 | * @param f frame to add to the queue |
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| 63 | */ |
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| 64 | int ff_af_queue_add(AudioFrameQueue *afq, const AVFrame *f); |
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| 65 | |||
| 66 | /** |
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| 67 | * Remove frame(s) from the queue. |
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| 68 | * |
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| 69 | * Retrieves the pts of the next available frame, or a generated pts based on |
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| 70 | * the last frame duration if there are no frames left in the queue. The number |
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| 71 | * of requested samples should be the full number of samples represented by the |
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| 72 | * packet that will be output by the encoder. If fewer samples are available |
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| 73 | * in the queue, a smaller value will be used for the output duration. |
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| 74 | * |
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| 75 | * @param afq queue context |
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| 76 | * @param nb_samples number of samples to remove from the queue |
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| 77 | * @param[out] pts output packet pts |
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| 78 | * @param[out] duration output packet duration |
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| 79 | */ |
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| 80 | void ff_af_queue_remove(AudioFrameQueue *afq, int nb_samples, int64_t *pts, |
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| 81 | int *duration); |
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| 82 | |||
| 83 | #endif /* AVCODEC_AUDIO_FRAME_QUEUE_H */ |