1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* function definitions common to libschroedinger decoder and encoder
*/
#include "libschroedinger.h"
#include "libavutil/mem.h"
static const SchroVideoFormatInfo ff_schro_video_format_info[] = {
{ 640, 480, 24000, 1001},
{ 176, 120, 15000, 1001},
{ 176, 144, 25, 2 },
{ 352, 240, 15000, 1001},
{ 352, 288, 25, 2 },
{ 704, 480, 15000, 1001},
{ 704, 576, 25, 2 },
{ 720, 480, 30000, 1001},
{ 720, 576, 25, 1 },
{ 1280, 720, 60000, 1001},
{ 1280, 720, 50, 1 },
{ 1920, 1080, 30000, 1001},
{ 1920, 1080, 25, 1 },
{ 1920, 1080, 60000, 1001},
{ 1920, 1080, 50, 1 },
{ 2048, 1080, 24, 1 },
{ 4096, 2160, 24, 1 },
};
static unsigned int get_video_format_idx(AVCodecContext *avctx)
{
unsigned int ret_idx = 0;
unsigned int idx;
unsigned int num_formats = sizeof(ff_schro_video_format_info) /
sizeof(ff_schro_video_format_info[0]);
for (idx = 1; idx < num_formats; ++idx) {
const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx];
if (avctx->width == vf->width &&
avctx->height == vf->height) {
ret_idx = idx;
if (avctx->time_base.den == vf->frame_rate_num &&
avctx->time_base.num == vf->frame_rate_denom)
return idx;
}
}
return ret_idx;
}
void ff_schro_queue_init(FFSchroQueue *queue)
{
queue->p_head = queue->p_tail = NULL;
queue->size = 0;
}
void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *))
{
while (queue->p_head)
free_func(ff_schro_queue_pop(queue));
}
int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data)
{
FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement));
if (!p_new)
return -1;
p_new->data = p_data;
if (!queue->p_head)
queue->p_head = p_new;
else
queue->p_tail->next = p_new;
queue->p_tail = p_new;
++queue->size;
return 0;
}
void *ff_schro_queue_pop(FFSchroQueue *queue)
{
FFSchroQueueElement *top = queue->p_head;
if (top) {
void *data = top->data;
queue->p_head = queue->p_head->next;
--queue->size;
av_freep(&top);
return data;
}
return NULL;
}
/**
* Schroedinger video preset table. Ensure that this tables matches up correctly
* with the ff_schro_video_format_info table.
*/
static const SchroVideoFormatEnum ff_schro_video_formats[]={
SCHRO_VIDEO_FORMAT_CUSTOM ,
SCHRO_VIDEO_FORMAT_QSIF ,
SCHRO_VIDEO_FORMAT_QCIF ,
SCHRO_VIDEO_FORMAT_SIF ,
SCHRO_VIDEO_FORMAT_CIF ,
SCHRO_VIDEO_FORMAT_4SIF ,
SCHRO_VIDEO_FORMAT_4CIF ,
SCHRO_VIDEO_FORMAT_SD480I_60 ,
SCHRO_VIDEO_FORMAT_SD576I_50 ,
SCHRO_VIDEO_FORMAT_HD720P_60 ,
SCHRO_VIDEO_FORMAT_HD720P_50 ,
SCHRO_VIDEO_FORMAT_HD1080I_60 ,
SCHRO_VIDEO_FORMAT_HD1080I_50 ,
SCHRO_VIDEO_FORMAT_HD1080P_60 ,
SCHRO_VIDEO_FORMAT_HD1080P_50 ,
SCHRO_VIDEO_FORMAT_DC2K_24 ,
SCHRO_VIDEO_FORMAT_DC4K_24 ,
};
SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avctx)
{
unsigned int num_formats = sizeof(ff_schro_video_formats) /
sizeof(ff_schro_video_formats[0]);
unsigned int idx = get_video_format_idx(avctx);
return (idx < num_formats) ? ff_schro_video_formats[idx] :
SCHRO_VIDEO_FORMAT_CUSTOM;
}
int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
SchroFrameFormat *schro_frame_fmt)
{
unsigned int num_formats = sizeof(schro_pixel_format_map) /
sizeof(schro_pixel_format_map[0]);
int idx;
for (idx = 0; idx < num_formats; ++idx) {
if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
*schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt;
return 0;
}
}
return -1;
}
static void free_schro_frame(SchroFrame *frame, void *priv)
{
AVPicture *p_pic = priv;
if (!p_pic)
return;
avpicture_free(p_pic);
av_freep(&p_pic);
}
SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
SchroFrameFormat schro_frame_fmt)
{
AVPicture *p_pic;
SchroFrame *p_frame;
int y_width, uv_width;
int y_height, uv_height;
int i;
y_width = avctx->width;
y_height = avctx->height;
uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
p_pic = av_mallocz(sizeof(AVPicture));
avpicture_alloc(p_pic, avctx->pix_fmt, y_width, y_height);
p_frame = schro_frame_new();
p_frame->format = schro_frame_fmt;
p_frame->width = y_width;
p_frame->height = y_height;
schro_frame_set_free_callback(p_frame, free_schro_frame, (void *)p_pic);
for (i = 0; i < 3; ++i) {
p_frame->components[i].width = i ? uv_width : y_width;
p_frame->components[i].stride = p_pic->linesize[i];
p_frame->components[i].height = i ? uv_height : y_height;
p_frame->components[i].length =
p_frame->components[i].stride * p_frame->components[i].height;
p_frame->components[i].data = p_pic->data[i];
if (i) {
p_frame->components[i].v_shift =
SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
p_frame->components[i].h_shift =
SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);
}
}
return p_frame;
}
|
