| 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 | * function definitions common to libschroedinger decoder and encoder |
| 24 | */ |
| 25 | |
| 26 | #include "libavutil/attributes.h" |
| 27 | #include "libavutil/mem.h" |
| 28 | #include "libschroedinger.h" |
| 29 | |
| 30 | static const SchroVideoFormatInfo ff_schro_video_format_info[] = { |
| 31 | { 640, 480, 24000, 1001}, |
| 32 | { 176, 120, 15000, 1001}, |
| 33 | { 176, 144, 25, 2 }, |
| 34 | { 352, 240, 15000, 1001}, |
| 35 | { 352, 288, 25, 2 }, |
| 36 | { 704, 480, 15000, 1001}, |
| 37 | { 704, 576, 25, 2 }, |
| 38 | { 720, 480, 30000, 1001}, |
| 39 | { 720, 576, 25, 1 }, |
| 40 | { 1280, 720, 60000, 1001}, |
| 41 | { 1280, 720, 50, 1 }, |
| 42 | { 1920, 1080, 30000, 1001}, |
| 43 | { 1920, 1080, 25, 1 }, |
| 44 | { 1920, 1080, 60000, 1001}, |
| 45 | { 1920, 1080, 50, 1 }, |
| 46 | { 2048, 1080, 24, 1 }, |
| 47 | { 4096, 2160, 24, 1 }, |
| 48 | }; |
| 49 | |
| 50 | static unsigned int get_video_format_idx(AVCodecContext *avctx) |
| 51 | { |
| 52 | unsigned int ret_idx = 0; |
| 53 | unsigned int idx; |
| 54 | unsigned int num_formats = sizeof(ff_schro_video_format_info) / |
| 55 | sizeof(ff_schro_video_format_info[0]); |
| 56 | |
| 57 | for (idx = 1; idx < num_formats; ++idx) { |
| 58 | const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx]; |
| 59 | if (avctx->width == vf->width && |
| 60 | avctx->height == vf->height) { |
| 61 | ret_idx = idx; |
| 62 | if (avctx->time_base.den == vf->frame_rate_num && |
| 63 | avctx->time_base.num == vf->frame_rate_denom) |
| 64 | return idx; |
| 65 | } |
| 66 | } |
| 67 | return ret_idx; |
| 68 | } |
| 69 | |
| 70 | av_cold void ff_schro_queue_init(FFSchroQueue *queue) |
| 71 | { |
| 72 | queue->p_head = queue->p_tail = NULL; |
| 73 | queue->size = 0; |
| 74 | } |
| 75 | |
| 76 | void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *)) |
| 77 | { |
| 78 | while (queue->p_head) |
| 79 | free_func(ff_schro_queue_pop(queue)); |
| 80 | } |
| 81 | |
| 82 | int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data) |
| 83 | { |
| 84 | FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement)); |
| 85 | |
| 86 | if (!p_new) |
| 87 | return -1; |
| 88 | |
| 89 | p_new->data = p_data; |
| 90 | |
| 91 | if (!queue->p_head) |
| 92 | queue->p_head = p_new; |
| 93 | else |
| 94 | queue->p_tail->next = p_new; |
| 95 | queue->p_tail = p_new; |
| 96 | |
| 97 | ++queue->size; |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | void *ff_schro_queue_pop(FFSchroQueue *queue) |
| 102 | { |
| 103 | FFSchroQueueElement *top = queue->p_head; |
| 104 | |
| 105 | if (top) { |
| 106 | void *data = top->data; |
| 107 | queue->p_head = queue->p_head->next; |
| 108 | --queue->size; |
| 109 | av_freep(&top); |
| 110 | return data; |
| 111 | } |
| 112 | |
| 113 | return NULL; |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Schroedinger video preset table. Ensure that this tables matches up correctly |
| 118 | * with the ff_schro_video_format_info table. |
| 119 | */ |
| 120 | static const SchroVideoFormatEnum ff_schro_video_formats[]={ |
| 121 | SCHRO_VIDEO_FORMAT_CUSTOM , |
| 122 | SCHRO_VIDEO_FORMAT_QSIF , |
| 123 | SCHRO_VIDEO_FORMAT_QCIF , |
| 124 | SCHRO_VIDEO_FORMAT_SIF , |
| 125 | SCHRO_VIDEO_FORMAT_CIF , |
| 126 | SCHRO_VIDEO_FORMAT_4SIF , |
| 127 | SCHRO_VIDEO_FORMAT_4CIF , |
| 128 | SCHRO_VIDEO_FORMAT_SD480I_60 , |
| 129 | SCHRO_VIDEO_FORMAT_SD576I_50 , |
| 130 | SCHRO_VIDEO_FORMAT_HD720P_60 , |
| 131 | SCHRO_VIDEO_FORMAT_HD720P_50 , |
| 132 | SCHRO_VIDEO_FORMAT_HD1080I_60 , |
| 133 | SCHRO_VIDEO_FORMAT_HD1080I_50 , |
| 134 | SCHRO_VIDEO_FORMAT_HD1080P_60 , |
| 135 | SCHRO_VIDEO_FORMAT_HD1080P_50 , |
| 136 | SCHRO_VIDEO_FORMAT_DC2K_24 , |
| 137 | SCHRO_VIDEO_FORMAT_DC4K_24 , |
| 138 | }; |
| 139 | |
| 140 | SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avctx) |
| 141 | { |
| 142 | unsigned int num_formats = sizeof(ff_schro_video_formats) / |
| 143 | sizeof(ff_schro_video_formats[0]); |
| 144 | |
| 145 | unsigned int idx = get_video_format_idx(avctx); |
| 146 | |
| 147 | return (idx < num_formats) ? ff_schro_video_formats[idx] : |
| 148 | SCHRO_VIDEO_FORMAT_CUSTOM; |
| 149 | } |
| 150 | |
| 151 | int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt, |
| 152 | SchroFrameFormat *schro_frame_fmt) |
| 153 | { |
| 154 | unsigned int num_formats = sizeof(schro_pixel_format_map) / |
| 155 | sizeof(schro_pixel_format_map[0]); |
| 156 | |
| 157 | int idx; |
| 158 | |
| 159 | for (idx = 0; idx < num_formats; ++idx) { |
| 160 | if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) { |
| 161 | *schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt; |
| 162 | return 0; |
| 163 | } |
| 164 | } |
| 165 | return -1; |
| 166 | } |
| 167 | |
| 168 | static void free_schro_frame(SchroFrame *frame, void *priv) |
| 169 | { |
| 170 | AVPicture *p_pic = priv; |
| 171 | |
| 172 | if (!p_pic) |
| 173 | return; |
| 174 | |
| 175 | avpicture_free(p_pic); |
| 176 | av_freep(&p_pic); |
| 177 | } |
| 178 | |
| 179 | SchroFrame *ff_create_schro_frame(AVCodecContext *avctx, |
| 180 | SchroFrameFormat schro_frame_fmt) |
| 181 | { |
| 182 | AVPicture *p_pic; |
| 183 | SchroFrame *p_frame; |
| 184 | int y_width, uv_width; |
| 185 | int y_height, uv_height; |
| 186 | int i; |
| 187 | |
| 188 | y_width = avctx->width; |
| 189 | y_height = avctx->height; |
| 190 | uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt)); |
| 191 | uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt)); |
| 192 | |
| 193 | p_pic = av_mallocz(sizeof(AVPicture)); |
| 194 | if (!p_pic || avpicture_alloc(p_pic, avctx->pix_fmt, y_width, y_height) < 0) { |
| 195 | av_free(p_pic); |
| 196 | return NULL; |
| 197 | } |
| 198 | |
| 199 | p_frame = schro_frame_new(); |
| 200 | p_frame->format = schro_frame_fmt; |
| 201 | p_frame->width = y_width; |
| 202 | p_frame->height = y_height; |
| 203 | schro_frame_set_free_callback(p_frame, free_schro_frame, (void *)p_pic); |
| 204 | |
| 205 | for (i = 0; i < 3; ++i) { |
| 206 | p_frame->components[i].width = i ? uv_width : y_width; |
| 207 | p_frame->components[i].stride = p_pic->linesize[i]; |
| 208 | p_frame->components[i].height = i ? uv_height : y_height; |
| 209 | p_frame->components[i].length = |
| 210 | p_frame->components[i].stride * p_frame->components[i].height; |
| 211 | p_frame->components[i].data = p_pic->data[i]; |
| 212 | |
| 213 | if (i) { |
| 214 | p_frame->components[i].v_shift = |
| 215 | SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format); |
| 216 | p_frame->components[i].h_shift = |
| 217 | SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | return p_frame; |
| 222 | } |