00001 /* 00002 * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com > 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFmpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00026 #include "libdirac_libschro.h" 00027 00028 static const DiracSchroVideoFormatInfo ff_dirac_schro_video_format_info[] = { 00029 { 640, 480, 24000, 1001}, 00030 { 176, 120, 15000, 1001}, 00031 { 176, 144, 25, 2 }, 00032 { 352, 240, 15000, 1001}, 00033 { 352, 288, 25, 2 }, 00034 { 704, 480, 15000, 1001}, 00035 { 704, 576, 25, 2 }, 00036 { 720, 480, 30000, 1001}, 00037 { 720, 576, 25, 1 }, 00038 { 1280, 720, 60000, 1001}, 00039 { 1280, 720, 50, 1 }, 00040 { 1920, 1080, 30000, 1001}, 00041 { 1920, 1080, 25, 1 }, 00042 { 1920, 1080, 60000, 1001}, 00043 { 1920, 1080, 50, 1 }, 00044 { 2048, 1080, 24, 1 }, 00045 { 4096, 2160, 24, 1 }, 00046 }; 00047 00048 unsigned int ff_dirac_schro_get_video_format_idx(AVCodecContext *avccontext) 00049 { 00050 unsigned int ret_idx = 0; 00051 unsigned int idx; 00052 unsigned int num_formats = sizeof(ff_dirac_schro_video_format_info) / 00053 sizeof(ff_dirac_schro_video_format_info[0]); 00054 00055 for (idx = 1; idx < num_formats; ++idx) { 00056 const DiracSchroVideoFormatInfo *vf = &ff_dirac_schro_video_format_info[idx]; 00057 if (avccontext->width == vf->width && 00058 avccontext->height == vf->height) { 00059 ret_idx = idx; 00060 if (avccontext->time_base.den == vf->frame_rate_num && 00061 avccontext->time_base.num == vf->frame_rate_denom) 00062 return idx; 00063 } 00064 } 00065 return ret_idx; 00066 } 00067 00068 void ff_dirac_schro_queue_init(DiracSchroQueue *queue) 00069 { 00070 queue->p_head = queue->p_tail = NULL; 00071 queue->size = 0; 00072 } 00073 00074 void ff_dirac_schro_queue_free(DiracSchroQueue *queue, 00075 void (*free_func)(void *)) 00076 { 00077 while (queue->p_head) 00078 free_func(ff_dirac_schro_queue_pop(queue)); 00079 } 00080 00081 int ff_dirac_schro_queue_push_back(DiracSchroQueue *queue, void *p_data) 00082 { 00083 DiracSchroQueueElement *p_new = av_mallocz(sizeof(DiracSchroQueueElement)); 00084 00085 if (!p_new) 00086 return -1; 00087 00088 p_new->data = p_data; 00089 00090 if (!queue->p_head) 00091 queue->p_head = p_new; 00092 else 00093 queue->p_tail->next = p_new; 00094 queue->p_tail = p_new; 00095 00096 ++queue->size; 00097 return 0; 00098 } 00099 00100 void *ff_dirac_schro_queue_pop(DiracSchroQueue *queue) 00101 { 00102 DiracSchroQueueElement *top = queue->p_head; 00103 00104 if (top) { 00105 void *data = top->data; 00106 queue->p_head = queue->p_head->next; 00107 --queue->size; 00108 av_freep(&top); 00109 return data; 00110 } 00111 00112 return NULL; 00113 }