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36583d23bd
Also update libav->ffmpeg as theres pretty much no code left from libav. The new code is faster, requires fewer mallocs and less memory. Its also half the number of lines of code. This code is not 100% identical in behavior to the previous, but the differences appear to be rather limitations of the previous design than intended though i could be wrong of course. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/*
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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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/**
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* Log the current state of the queue.
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*
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* @param afq queue context
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*/
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void ff_af_queue_log_state(AudioFrameQueue *afq);
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#endif /* AVCODEC_AUDIO_FRAME_QUEUE_H */
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