Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / libschroedinger.c
CommitLineData
2ba45a60
DM
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
30static 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
50static 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
70av_cold void ff_schro_queue_init(FFSchroQueue *queue)
71{
72 queue->p_head = queue->p_tail = NULL;
73 queue->size = 0;
74}
75
76void 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
82int 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
101void *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*/
120static 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
140SchroVideoFormatEnum 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
151int 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
168static 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
179SchroFrame *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}