2 * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
4 * This file is part of FFmpeg.
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.
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.
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
23 * function definitions common to libschroedinger decoder and encoder
26 #include "libschroedinger.h"
28 static const SchroVideoFormatInfo ff_schro_video_format_info[] = {
29 { 640, 480, 24000, 1001},
30 { 176, 120, 15000, 1001},
32 { 352, 240, 15000, 1001},
34 { 704, 480, 15000, 1001},
36 { 720, 480, 30000, 1001},
38 { 1280, 720, 60000, 1001},
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 },
48 static unsigned int get_video_format_idx(AVCodecContext *avccontext)
50 unsigned int ret_idx = 0;
52 unsigned int num_formats = sizeof(ff_schro_video_format_info) /
53 sizeof(ff_schro_video_format_info[0]);
55 for (idx = 1; idx < num_formats; ++idx) {
56 const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx];
57 if (avccontext->width == vf->width &&
58 avccontext->height == vf->height) {
60 if (avccontext->time_base.den == vf->frame_rate_num &&
61 avccontext->time_base.num == vf->frame_rate_denom)
68 void ff_schro_queue_init(FFSchroQueue *queue)
70 queue->p_head = queue->p_tail = NULL;
74 void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *))
77 free_func(ff_schro_queue_pop(queue));
80 int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data)
82 FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement));
90 queue->p_head = p_new;
92 queue->p_tail->next = p_new;
93 queue->p_tail = p_new;
99 void *ff_schro_queue_pop(FFSchroQueue *queue)
101 FFSchroQueueElement *top = queue->p_head;
104 void *data = top->data;
105 queue->p_head = queue->p_head->next;
115 * Schroedinger video preset table. Ensure that this tables matches up correctly
116 * with the ff_schro_video_format_info table.
118 static const SchroVideoFormatEnum ff_schro_video_formats[]={
119 SCHRO_VIDEO_FORMAT_CUSTOM ,
120 SCHRO_VIDEO_FORMAT_QSIF ,
121 SCHRO_VIDEO_FORMAT_QCIF ,
122 SCHRO_VIDEO_FORMAT_SIF ,
123 SCHRO_VIDEO_FORMAT_CIF ,
124 SCHRO_VIDEO_FORMAT_4SIF ,
125 SCHRO_VIDEO_FORMAT_4CIF ,
126 SCHRO_VIDEO_FORMAT_SD480I_60 ,
127 SCHRO_VIDEO_FORMAT_SD576I_50 ,
128 SCHRO_VIDEO_FORMAT_HD720P_60 ,
129 SCHRO_VIDEO_FORMAT_HD720P_50 ,
130 SCHRO_VIDEO_FORMAT_HD1080I_60 ,
131 SCHRO_VIDEO_FORMAT_HD1080I_50 ,
132 SCHRO_VIDEO_FORMAT_HD1080P_60 ,
133 SCHRO_VIDEO_FORMAT_HD1080P_50 ,
134 SCHRO_VIDEO_FORMAT_DC2K_24 ,
135 SCHRO_VIDEO_FORMAT_DC4K_24 ,
138 SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext)
140 unsigned int num_formats = sizeof(ff_schro_video_formats) /
141 sizeof(ff_schro_video_formats[0]);
143 unsigned int idx = get_video_format_idx(avccontext);
145 return (idx < num_formats) ? ff_schro_video_formats[idx] :
146 SCHRO_VIDEO_FORMAT_CUSTOM;
149 int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
150 SchroFrameFormat *schro_frame_fmt)
152 unsigned int num_formats = sizeof(schro_pixel_format_map) /
153 sizeof(schro_pixel_format_map[0]);
157 for (idx = 0; idx < num_formats; ++idx) {
158 if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
159 *schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt;
166 static void free_schro_frame(SchroFrame *frame, void *priv)
168 AVPicture *p_pic = priv;
173 avpicture_free(p_pic);
177 SchroFrame *ff_create_schro_frame(AVCodecContext *avccontext,
178 SchroFrameFormat schro_frame_fmt)
182 int y_width, uv_width;
183 int y_height, uv_height;
186 y_width = avccontext->width;
187 y_height = avccontext->height;
188 uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
189 uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
191 p_pic = av_mallocz(sizeof(AVPicture));
192 if (!p_pic || avpicture_alloc(p_pic, avccontext->pix_fmt, y_width, y_height) < 0) {
197 p_frame = schro_frame_new();
198 p_frame->format = schro_frame_fmt;
199 p_frame->width = y_width;
200 p_frame->height = y_height;
201 schro_frame_set_free_callback(p_frame, free_schro_frame, (void *)p_pic);
203 for (i = 0; i < 3; ++i) {
204 p_frame->components[i].width = i ? uv_width : y_width;
205 p_frame->components[i].stride = p_pic->linesize[i];
206 p_frame->components[i].height = i ? uv_height : y_height;
207 p_frame->components[i].length =
208 p_frame->components[i].stride * p_frame->components[i].height;
209 p_frame->components[i].data = p_pic->data[i];
212 p_frame->components[i].v_shift =
213 SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
214 p_frame->components[i].h_shift =
215 SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);