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"
27 #include "libavutil/mem.h"
29 static const SchroVideoFormatInfo ff_schro_video_format_info[] = {
30 { 640, 480, 24000, 1001},
31 { 176, 120, 15000, 1001},
33 { 352, 240, 15000, 1001},
35 { 704, 480, 15000, 1001},
37 { 720, 480, 30000, 1001},
39 { 1280, 720, 60000, 1001},
41 { 1920, 1080, 30000, 1001},
42 { 1920, 1080, 25, 1 },
43 { 1920, 1080, 60000, 1001},
44 { 1920, 1080, 50, 1 },
45 { 2048, 1080, 24, 1 },
46 { 4096, 2160, 24, 1 },
49 static unsigned int get_video_format_idx(AVCodecContext *avccontext)
51 unsigned int ret_idx = 0;
53 unsigned int num_formats = sizeof(ff_schro_video_format_info) /
54 sizeof(ff_schro_video_format_info[0]);
56 for (idx = 1; idx < num_formats; ++idx) {
57 const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx];
58 if (avccontext->width == vf->width &&
59 avccontext->height == vf->height) {
61 if (avccontext->time_base.den == vf->frame_rate_num &&
62 avccontext->time_base.num == vf->frame_rate_denom)
69 void ff_schro_queue_init(FFSchroQueue *queue)
71 queue->p_head = queue->p_tail = NULL;
75 void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *))
78 free_func(ff_schro_queue_pop(queue));
81 int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data)
83 FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement));
91 queue->p_head = p_new;
93 queue->p_tail->next = p_new;
94 queue->p_tail = p_new;
100 void *ff_schro_queue_pop(FFSchroQueue *queue)
102 FFSchroQueueElement *top = queue->p_head;
105 void *data = top->data;
106 queue->p_head = queue->p_head->next;
116 * Schroedinger video preset table. Ensure that this tables matches up correctly
117 * with the ff_schro_video_format_info table.
119 static const SchroVideoFormatEnum ff_schro_video_formats[]={
120 SCHRO_VIDEO_FORMAT_CUSTOM ,
121 SCHRO_VIDEO_FORMAT_QSIF ,
122 SCHRO_VIDEO_FORMAT_QCIF ,
123 SCHRO_VIDEO_FORMAT_SIF ,
124 SCHRO_VIDEO_FORMAT_CIF ,
125 SCHRO_VIDEO_FORMAT_4SIF ,
126 SCHRO_VIDEO_FORMAT_4CIF ,
127 SCHRO_VIDEO_FORMAT_SD480I_60 ,
128 SCHRO_VIDEO_FORMAT_SD576I_50 ,
129 SCHRO_VIDEO_FORMAT_HD720P_60 ,
130 SCHRO_VIDEO_FORMAT_HD720P_50 ,
131 SCHRO_VIDEO_FORMAT_HD1080I_60 ,
132 SCHRO_VIDEO_FORMAT_HD1080I_50 ,
133 SCHRO_VIDEO_FORMAT_HD1080P_60 ,
134 SCHRO_VIDEO_FORMAT_HD1080P_50 ,
135 SCHRO_VIDEO_FORMAT_DC2K_24 ,
136 SCHRO_VIDEO_FORMAT_DC4K_24 ,
139 SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext)
141 unsigned int num_formats = sizeof(ff_schro_video_formats) /
142 sizeof(ff_schro_video_formats[0]);
144 unsigned int idx = get_video_format_idx(avccontext);
146 return (idx < num_formats) ? ff_schro_video_formats[idx] :
147 SCHRO_VIDEO_FORMAT_CUSTOM;
150 int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
151 SchroFrameFormat *schro_frame_fmt)
153 unsigned int num_formats = sizeof(schro_pixel_format_map) /
154 sizeof(schro_pixel_format_map[0]);
158 for (idx = 0; idx < num_formats; ++idx) {
159 if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
160 *schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt;
167 static void free_schro_frame(SchroFrame *frame, void *priv)
169 AVPicture *p_pic = priv;
174 avpicture_free(p_pic);
178 SchroFrame *ff_create_schro_frame(AVCodecContext *avccontext,
179 SchroFrameFormat schro_frame_fmt)
183 int y_width, uv_width;
184 int y_height, uv_height;
187 y_width = avccontext->width;
188 y_height = avccontext->height;
189 uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
190 uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
192 p_pic = av_mallocz(sizeof(AVPicture));
193 if (!p_pic || avpicture_alloc(p_pic, avccontext->pix_fmt, y_width, y_height) < 0) {
198 p_frame = schro_frame_new();
199 p_frame->format = schro_frame_fmt;
200 p_frame->width = y_width;
201 p_frame->height = y_height;
202 schro_frame_set_free_callback(p_frame, free_schro_frame, (void *)p_pic);
204 for (i = 0; i < 3; ++i) {
205 p_frame->components[i].width = i ? uv_width : y_width;
206 p_frame->components[i].stride = p_pic->linesize[i];
207 p_frame->components[i].height = i ? uv_height : y_height;
208 p_frame->components[i].length =
209 p_frame->components[i].stride * p_frame->components[i].height;
210 p_frame->components[i].data = p_pic->data[i];
213 p_frame->components[i].v_shift =
214 SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
215 p_frame->components[i].h_shift =
216 SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);