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* functions common to libdirac and libschroedinger
24*/
25
26#include "libdirac_libschro.h"
27
28static const FfmpegDiracSchroVideoFormatInfo ff_dirac_schro_video_format_info[] = {
29    { 640,  480,  24000, 1001},
30    { 176,  120,  15000, 1001},
31    { 176,  144,  25,    2   },
32    { 352,  240,  15000, 1001},
33    { 352,  288,  25,    2   },
34    { 704,  480,  15000, 1001},
35    { 704,  576,  25,    2   },
36    { 720,  480,  30000, 1001},
37    { 720,  576,  25,    1   },
38    { 1280, 720,  60000, 1001},
39    { 1280, 720,  50,    1   },
40    { 1920, 1080, 30000, 1001},
41    { 1920, 1080, 25,    1   },
42    { 1920, 1080, 60000, 1001},
43    { 1920, 1080, 50,    1   },
44    { 2048, 1080, 24,    1   },
45    { 4096, 2160, 24,    1   },
46};
47
48unsigned int ff_dirac_schro_get_video_format_idx(AVCodecContext *avccontext)
49{
50    unsigned int ret_idx = 0;
51    unsigned int idx;
52    unsigned int num_formats = sizeof(ff_dirac_schro_video_format_info) /
53                               sizeof(ff_dirac_schro_video_format_info[0]);
54
55    for (idx = 1; idx < num_formats; ++idx) {
56        const FfmpegDiracSchroVideoFormatInfo *vf = &ff_dirac_schro_video_format_info[idx];
57        if (avccontext->width  == vf->width &&
58            avccontext->height == vf->height) {
59            ret_idx = idx;
60            if (avccontext->time_base.den == vf->frame_rate_num &&
61                avccontext->time_base.num == vf->frame_rate_denom)
62                return idx;
63        }
64    }
65    return ret_idx;
66}
67
68void ff_dirac_schro_queue_init(FfmpegDiracSchroQueue *queue)
69{
70    queue->p_head = queue->p_tail = NULL;
71    queue->size = 0;
72}
73
74void ff_dirac_schro_queue_free(FfmpegDiracSchroQueue *queue,
75                               void (*free_func)(void *))
76{
77    while (queue->p_head)
78        free_func(ff_dirac_schro_queue_pop(queue));
79}
80
81int ff_dirac_schro_queue_push_back(FfmpegDiracSchroQueue *queue, void *p_data)
82{
83    FfmpegDiracSchroQueueElement *p_new = av_mallocz(sizeof(FfmpegDiracSchroQueueElement));
84
85    if (!p_new)
86        return -1;
87
88    p_new->data = p_data;
89
90    if (!queue->p_head)
91        queue->p_head = p_new;
92    else
93        queue->p_tail->next = p_new;
94    queue->p_tail = p_new;
95
96    ++queue->size;
97    return 0;
98}
99
100void *ff_dirac_schro_queue_pop(FfmpegDiracSchroQueue *queue)
101{
102    FfmpegDiracSchroQueueElement *top = queue->p_head;
103
104    if (top) {
105        void *data = top->data;
106        queue->p_head = queue->p_head->next;
107        --queue->size;
108        av_freep(&top);
109        return data;
110    }
111
112    return NULL;
113}
114