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
|
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#ifdef USE_LIBAVCODEC
#include "bswap.h"
#include "vd_internal.h"
static vd_info_t info = {
"FFmpeg's libavcodec codec family",
"ffmpeg",
VFM_FFMPEG,
"A'rpi",
"http://ffmpeg.sf.net",
"native codecs"
};
LIBVD_EXTERN(ffmpeg)
#ifdef USE_LIBAVCODEC_SO
#include <libffmpeg/avcodec.h>
#else
#include "libavcodec/avcodec.h"
#endif
int avcodec_inited=0;
typedef struct {
AVCodec *lavc_codec;
AVCodecContext *avctx;
int last_aspect;
} vd_ffmpeg_ctx;
//#ifdef FF_POSTPROCESS
//unsigned int lavc_pp=0;
//#endif
// to set/get/query special features/parameters
static int control(sh_video_t *sh,int cmd,void* arg,...){
return CONTROL_UNKNOWN;
}
// init driver
static int init(sh_video_t *sh){
AVCodecContext *avctx;
vd_ffmpeg_ctx *ctx;
if(!avcodec_inited){
avcodec_init();
avcodec_register_all();
avcodec_inited=1;
}
ctx = sh->context = malloc(sizeof(vd_ffmpeg_ctx));
if (!ctx)
return(0);
memset(ctx, 0, sizeof(vd_ffmpeg_ctx));
ctx->lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh->codec->dll);
if(!ctx->lavc_codec){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingLAVCcodec,sh->codec->dll);
return 0;
}
ctx->avctx = malloc(sizeof(AVCodecContext));
memset(ctx->avctx, 0, sizeof(AVCodecContext));
avctx = ctx->avctx;
avctx->width = sh->disp_w;
avctx->height= sh->disp_h;
mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"libavcodec.size: %d x %d\n",avctx->width,avctx->height);
if (sh->format == mmioFOURCC('R', 'V', '1', '3'))
avctx->sub_id = 3;
/* open it */
if (avcodec_open(avctx, ctx->lavc_codec) < 0) {
mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantOpenCodec);
return 0;
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: libavcodec init OK!\n");
return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12);
}
// uninit driver
static void uninit(sh_video_t *sh){
vd_ffmpeg_ctx *ctx = sh->context;
AVCodecContext *avctx = ctx->avctx;
if (avcodec_close(avctx) < 0)
mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantCloseCodec);
if (avctx)
free(avctx);
if (ctx)
free(ctx);
}
//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
// decode a frame
static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
int got_picture=0;
int ret;
AVPicture lavc_picture;
vd_ffmpeg_ctx *ctx = sh->context;
AVCodecContext *avctx = ctx->avctx;
mp_image_t* mpi;
if(len<=0) return NULL; // skipped frame
ret = avcodec_decode_video(avctx, &lavc_picture,
&got_picture, data, len);
if(ret<0) mp_msg(MSGT_DECVIDEO,MSGL_WARN, "Error while decoding frame!\n");
if(!got_picture) return NULL; // skipped image
if (avctx->aspect_ratio_info != ctx->last_aspect)
{
ctx->last_aspect = avctx->aspect_ratio_info;
switch(avctx->aspect_ratio_info)
{
case FF_ASPECT_4_3_625:
case FF_ASPECT_4_3_525:
sh->aspect = 4.0/3.0;
break;
case FF_ASPECT_16_9_625:
case FF_ASPECT_16_9_525:
sh->aspect = 16.0/9.0;
break;
case FF_ASPECT_SQUARE:
default:
sh->aspect = 0.0;
break;
}
if (mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12))
return NULL;
}
if ((avctx->width != sh->disp_w) ||
(avctx->height != sh->disp_h))
{
/* and what about the sh->bih (BitmapInfoHeader) width/height values? */
sh->disp_w = avctx->width;
sh->disp_h = avctx->height;
if (mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12))
return NULL;
}
mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
avctx->width, avctx->height);
if(!mpi){ // temporary!
printf("couldn't allocate image for codec\n");
return NULL;
}
mpi->planes[0]=lavc_picture.data[0];
mpi->planes[1]=lavc_picture.data[1];
mpi->planes[2]=lavc_picture.data[2];
mpi->stride[0]=lavc_picture.linesize[0];
mpi->stride[1]=lavc_picture.linesize[1];
mpi->stride[2]=lavc_picture.linesize[2];
if(avctx->pix_fmt==PIX_FMT_YUV422P){
mpi->stride[1]*=2;
mpi->stride[2]*=2;
}
return mpi;
}
#endif
|
