1/*
2 * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21/**
22* @file libavcodec/libdirac_libschro.h
23* data structures common to libdirac and libschroedinger
24*/
25
26#ifndef AVCODEC_LIBDIRAC_LIBSCHRO_H
27#define AVCODEC_LIBDIRAC_LIBSCHRO_H
28
29#include "avcodec.h"
30
31typedef struct
32{
33    uint16_t width;
34    uint16_t height;
35    uint16_t frame_rate_num;
36    uint16_t frame_rate_denom;
37} FfmpegDiracSchroVideoFormatInfo;
38
39/**
40* Returns the index into the Dirac Schro common video format info table
41*/
42unsigned int ff_dirac_schro_get_video_format_idx (AVCodecContext *avccontext);
43
44/**
45* contains a single encoded frame returned from Dirac or Schroedinger
46*/
47typedef struct FfmpegDiracSchroEncodedFrame
48{
49    /** encoded frame data */
50    uint8_t *p_encbuf;
51
52    /** encoded frame size */
53    uint32_t size;
54
55    /** encoded frame number. Will be used as pts */
56    uint32_t frame_num;
57
58    /** key frame flag. 1 : is key frame , 0 : in not key frame */
59    uint16_t key_frame;
60} FfmpegDiracSchroEncodedFrame;
61
62/**
63* queue element
64*/
65typedef struct FfmpegDiracSchroQueueElement
66{
67    /** Data to be stored in queue*/
68    void *data;
69    /** Pointer to next element queue */
70    struct FfmpegDiracSchroQueueElement *next;
71} FfmpegDiracSchroQueueElement;
72
73
74/**
75* A simple queue implementation used in libdirac and libschroedinger
76*/
77typedef struct FfmpegDiracSchroQueue
78{
79    /** Pointer to head of queue */
80    FfmpegDiracSchroQueueElement *p_head;
81    /** Pointer to tail of queue */
82    FfmpegDiracSchroQueueElement *p_tail;
83    /** Queue size*/
84    int size;
85} FfmpegDiracSchroQueue;
86
87/**
88* Initialise the queue
89*/
90void ff_dirac_schro_queue_init(FfmpegDiracSchroQueue *queue);
91
92/**
93* Add an element to the end of the queue
94*/
95int ff_dirac_schro_queue_push_back (FfmpegDiracSchroQueue *queue, void *p_data);
96
97/**
98* Return the first element in the queue
99*/
100void *ff_dirac_schro_queue_pop (FfmpegDiracSchroQueue *queue);
101
102/**
103* Free the queue resources. free_func is a function supplied by the caller to
104* free any resources allocated by the caller. The data field of the queue
105* element is passed to it.
106*/
107void ff_dirac_schro_queue_free(FfmpegDiracSchroQueue *queue,
108                               void (*free_func)(void *));
109#endif /* AVCODEC_LIBDIRAC_LIBSCHRO_H */
110