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
|
/*
* Portable Network Graphics renderer
*
* Copyright 2001 by Felix Buenemann <atmosfear@users.sourceforge.net>
*
* Uses libpng (which uses zlib), so see according licenses.
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "config.h"
#include "mp_msg.h"
#include "mp_msg.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "subopt-helper.h"
#include "libavcodec/avcodec.h"
#include "fmt-conversion.h"
static const vo_info_t info =
{
"PNG file",
"png",
"Felix Buenemann <atmosfear@users.sourceforge.net>",
""
};
const LIBVO_EXTERN (png)
static int z_compression;
static int framenum;
static int use_alpha;
static AVCodecContext *avctx;
static AVFrame *pic;
static uint8_t *outbuffer;
int outbuffer_size;
static int
config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
{
if(z_compression == 0) {
mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_PNG] Warning: compression level set to 0, compression disabled!\n");
mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_PNG] Info: Use -vo png:z=<n> to set compression level from 0 to 9.\n");
mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_PNG] Info: (0 = no compression, 1 = fastest, lowest - 9 best, slowest compression)\n");
}
mp_msg(MSGT_VO,MSGL_DBG2, "PNG Compression level %i\n", z_compression);
uninit();
struct AVCodec *png_codec = avcodec_find_encoder(CODEC_ID_PNG);
if (!png_codec)
goto error;
avctx = avcodec_alloc_context3(png_codec);
if (!avctx)
goto error;
pic = avcodec_alloc_frame();
if (!pic)
goto error;
avctx->width = width;
avctx->height = height;
avctx->pix_fmt = imgfmt2pixfmt(format);
avctx->compression_level = z_compression;
if (avcodec_open2(avctx, png_codec, NULL) < 0)
goto error;
return 0;
error:
uninit();
return -1;
}
static uint32_t draw_image(mp_image_t* mpi){
int buffersize;
int res;
char buf[100];
FILE *outfile;
// if -dr or -slices then do nothing:
if(mpi->flags&(MP_IMGFLAG_DIRECT|MP_IMGFLAG_DRAW_CALLBACK)) return VO_TRUE;
snprintf (buf, 100, "%08d.png", ++framenum);
outfile = fopen(buf, "wb");
if (!outfile) {
mp_msg(MSGT_VO,MSGL_WARN, "\n[VO_PNG] Error opening '%s' for writing!\n", strerror(errno));
return 1;
}
avcodec_get_frame_defaults(pic);
pic->data[0] = mpi->planes[0];
pic->linesize[0] = mpi->stride[0];
buffersize = mpi->w * mpi->h * 8;
if (outbuffer_size < buffersize) {
av_freep(&outbuffer);
outbuffer = av_malloc(buffersize);
outbuffer_size = buffersize;
}
res = avcodec_encode_video(avctx, outbuffer, outbuffer_size, pic);
if(res < 0){
mp_msg(MSGT_VO,MSGL_WARN, "[VO_PNG] Error in create_png.\n");
fclose(outfile);
return 1;
}
fwrite(outbuffer, res, 1, outfile);
fclose(outfile);
return VO_TRUE;
}
static void draw_osd(void){}
static void flip_page (void){}
static int draw_frame(uint8_t * src[])
{
return -1;
}
static int draw_slice( uint8_t *src[],int stride[],int w,int h,int x,int y )
{
return -1;
}
static int
query_format(uint32_t format)
{
const int supported_flags = VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW|VFCAP_ACCEPT_STRIDE;
switch(format){
case IMGFMT_RGB24:
return use_alpha ? 0 : supported_flags;
case IMGFMT_BGR32:
return use_alpha ? supported_flags : 0;
}
return 0;
}
static void uninit(void)
{
if (avctx)
avcodec_close(avctx);
av_freep(&avctx);
av_freep(&outbuffer);
av_free(pic);
pic = NULL;
outbuffer_size = 0;
}
static void check_events(void){}
static int int_zero_to_nine(void *value)
{
int *sh = value;
return *sh >= 0 && *sh <= 9;
}
static const opt_t subopts[] = {
{"alpha", OPT_ARG_BOOL, &use_alpha, NULL},
{"z", OPT_ARG_INT, &z_compression, int_zero_to_nine},
{NULL}
};
static int preinit(const char *arg)
{
z_compression = 0;
use_alpha = 0;
if (subopt_parse(arg, subopts) != 0) {
return -1;
}
return 0;
}
static int control(uint32_t request, void *data)
{
switch (request) {
case VOCTRL_DRAW_IMAGE:
return draw_image(data);
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
}
return VO_NOTIMPL;
}
|
