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.c 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 = 57 &ff_dirac_schro_video_format_info[idx]; 58 if (avccontext->width == vf->width && 59 avccontext->height == vf->height){ 60 ret_idx = idx; 61 if (avccontext->time_base.den == vf->frame_rate_num && 62 avccontext->time_base.num == vf->frame_rate_denom) { 63 return idx; 64 } 65 } 66 } 67 return ret_idx; 68} 69 70void ff_dirac_schro_queue_init (FfmpegDiracSchroQueue *queue) 71{ 72 queue->p_head = queue->p_tail = NULL; 73 queue->size = 0; 74} 75 76void ff_dirac_schro_queue_free (FfmpegDiracSchroQueue *queue, 77 void (*free_func)(void *)) 78{ 79 while (queue->p_head) { 80 free_func( ff_dirac_schro_queue_pop(queue) ); 81 } 82} 83 84int ff_dirac_schro_queue_push_back (FfmpegDiracSchroQueue *queue, void *p_data) 85{ 86 FfmpegDiracSchroQueueElement *p_new = 87 av_mallocz(sizeof(FfmpegDiracSchroQueueElement)); 88 89 if (p_new == NULL) 90 return -1; 91 92 p_new->data = p_data; 93 94 if (queue->p_head == NULL) 95 queue->p_head = p_new; 96 else 97 queue->p_tail->next = p_new; 98 queue->p_tail = p_new; 99 100 ++queue->size; 101 return 0; 102} 103 104void *ff_dirac_schro_queue_pop (FfmpegDiracSchroQueue *queue) 105{ 106 FfmpegDiracSchroQueueElement *top = queue->p_head; 107 108 if (top != NULL) { 109 void *data = top->data; 110 queue->p_head = queue->p_head->next; 111 --queue->size; 112 av_freep (&top); 113 return data; 114 } 115 116 return NULL; 117} 118