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ffmpeg / libavcodec / libdirac_libschro.h @ 2912e87a

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/*
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 * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
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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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/**
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* @file
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* data structures common to libdirac and libschroedinger
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*/
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#ifndef AVCODEC_LIBDIRAC_LIBSCHRO_H
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#define AVCODEC_LIBDIRAC_LIBSCHRO_H
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#include "avcodec.h"
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typedef struct {
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    uint16_t width;
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    uint16_t height;
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    uint16_t frame_rate_num;
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    uint16_t frame_rate_denom;
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} FfmpegDiracSchroVideoFormatInfo;
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/**
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* Returns the index into the Dirac Schro common video format info table
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*/
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unsigned int ff_dirac_schro_get_video_format_idx(AVCodecContext *avccontext);
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/**
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* contains a single encoded frame returned from Dirac or Schroedinger
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*/
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typedef struct FfmpegDiracSchroEncodedFrame {
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    /** encoded frame data */
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    uint8_t *p_encbuf;
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    /** encoded frame size */
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    uint32_t size;
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    /** encoded frame number. Will be used as pts */
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    uint32_t frame_num;
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    /** key frame flag. 1 : is key frame , 0 : in not key frame */
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    uint16_t key_frame;
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} FfmpegDiracSchroEncodedFrame;
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/**
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* queue element
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*/
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typedef struct FfmpegDiracSchroQueueElement {
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    /** Data to be stored in queue*/
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    void *data;
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    /** Pointer to next element queue */
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    struct FfmpegDiracSchroQueueElement *next;
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} FfmpegDiracSchroQueueElement;
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/**
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* A simple queue implementation used in libdirac and libschroedinger
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*/
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typedef struct FfmpegDiracSchroQueue {
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    /** Pointer to head of queue */
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    FfmpegDiracSchroQueueElement *p_head;
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    /** Pointer to tail of queue */
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    FfmpegDiracSchroQueueElement *p_tail;
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    /** Queue size*/
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    int size;
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} FfmpegDiracSchroQueue;
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/**
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* Initialise the queue
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*/
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void ff_dirac_schro_queue_init(FfmpegDiracSchroQueue *queue);
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/**
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* Add an element to the end of the queue
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*/
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int ff_dirac_schro_queue_push_back(FfmpegDiracSchroQueue *queue, void *p_data);
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/**
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* Return the first element in the queue
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*/
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void *ff_dirac_schro_queue_pop(FfmpegDiracSchroQueue *queue);
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/**
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* Free the queue resources. free_func is a function supplied by the caller to
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* free any resources allocated by the caller. The data field of the queue
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* element is passed to it.
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*/
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void ff_dirac_schro_queue_free(FfmpegDiracSchroQueue *queue,
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                               void (*free_func)(void *));
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#endif /* AVCODEC_LIBDIRAC_LIBSCHRO_H */