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
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    uint16_t width;
33    uint16_t height;
34    uint16_t frame_rate_num;
35    uint16_t frame_rate_denom;
36} FfmpegDiracSchroVideoFormatInfo;
37
38/**
39* Returns the index into the Dirac Schro common video format info table
40*/
41unsigned int ff_dirac_schro_get_video_format_idx(AVCodecContext *avccontext);
42
43/**
44* contains a single encoded frame returned from Dirac or Schroedinger
45*/
46typedef struct FfmpegDiracSchroEncodedFrame {
47    /** encoded frame data */
48    uint8_t *p_encbuf;
49
50    /** encoded frame size */
51    uint32_t size;
52
53    /** encoded frame number. Will be used as pts */
54    uint32_t frame_num;
55
56    /** key frame flag. 1 : is key frame , 0 : in not key frame */
57    uint16_t key_frame;
58} FfmpegDiracSchroEncodedFrame;
59
60/**
61* queue element
62*/
63typedef struct FfmpegDiracSchroQueueElement {
64    /** Data to be stored in queue*/
65    void *data;
66    /** Pointer to next element queue */
67    struct FfmpegDiracSchroQueueElement *next;
68} FfmpegDiracSchroQueueElement;
69
70
71/**
72* A simple queue implementation used in libdirac and libschroedinger
73*/
74typedef struct FfmpegDiracSchroQueue {
75    /** Pointer to head of queue */
76    FfmpegDiracSchroQueueElement *p_head;
77    /** Pointer to tail of queue */
78    FfmpegDiracSchroQueueElement *p_tail;
79    /** Queue size*/
80    int size;
81} FfmpegDiracSchroQueue;
82
83/**
84* Initialise the queue
85*/
86void ff_dirac_schro_queue_init(FfmpegDiracSchroQueue *queue);
87
88/**
89* Add an element to the end of the queue
90*/
91int ff_dirac_schro_queue_push_back(FfmpegDiracSchroQueue *queue, void *p_data);
92
93/**
94* Return the first element in the queue
95*/
96void *ff_dirac_schro_queue_pop(FfmpegDiracSchroQueue *queue);
97
98/**
99* Free the queue resources. free_func is a function supplied by the caller to
100* free any resources allocated by the caller. The data field of the queue
101* element is passed to it.
102*/
103void ff_dirac_schro_queue_free(FfmpegDiracSchroQueue *queue,
104                               void (*free_func)(void *));
105#endif /* AVCODEC_LIBDIRAC_LIBSCHRO_H */
106