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83 lines
2.4 KiB
83 lines
2.4 KiB
/* |
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* Audio Frame Queue |
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* Copyright (c) 2012 Justin Ruggles |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_AUDIO_FRAME_QUEUE_H |
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#define AVCODEC_AUDIO_FRAME_QUEUE_H |
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#include "avcodec.h" |
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typedef struct AudioFrame { |
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int64_t pts; |
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int duration; |
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} AudioFrame; |
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typedef struct AudioFrameQueue { |
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AVCodecContext *avctx; |
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int remaining_delay; |
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int remaining_samples; |
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AudioFrame *frames; |
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unsigned frame_count; |
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unsigned frame_alloc; |
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} AudioFrameQueue; |
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/** |
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* Initialize AudioFrameQueue. |
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* |
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* @param avctx context to use for time_base and av_log |
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* @param afq queue context |
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*/ |
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void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq); |
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/** |
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* Close AudioFrameQueue. |
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* |
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* Frees memory if needed. |
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* |
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* @param afq queue context |
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*/ |
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void ff_af_queue_close(AudioFrameQueue *afq); |
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/** |
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* Add a frame to the queue. |
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* |
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* @param afq queue context |
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* @param f frame to add to the queue |
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*/ |
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int ff_af_queue_add(AudioFrameQueue *afq, const AVFrame *f); |
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/** |
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* Remove frame(s) from the queue. |
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* |
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* Retrieves the pts of the next available frame, or a generated pts based on |
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* the last frame duration if there are no frames left in the queue. The number |
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* of requested samples should be the full number of samples represented by the |
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* packet that will be output by the encoder. If fewer samples are available |
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* in the queue, a smaller value will be used for the output duration. |
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* |
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* @param afq queue context |
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* @param nb_samples number of samples to remove from the queue |
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* @param[out] pts output packet pts |
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* @param[out] duration output packet duration |
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*/ |
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void ff_af_queue_remove(AudioFrameQueue *afq, int nb_samples, int64_t *pts, |
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int *duration); |
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#endif /* AVCODEC_AUDIO_FRAME_QUEUE_H */
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