dns网站卫士 收录,无极招聘网无极在线,怎么样给一个网站做自然排名,注册公司要求什么条件由于视频开发的需求#xff0c;封装xvid c调用接口#xff0c;使之优雅易用 我已经对pc camera视频流(RGB)进行尝试#xff0c;编码之后传输到远程主机进行解码回放#xff0c;效果不错 具体的xvid的参数可以进一步优化#xff0c;这里只是提供简单的范例 1. xvid 解码 …由于视频开发的需求封装xvid c调用接口使之优雅易用 我已经对pc camera视频流(RGB)进行尝试编码之后传输到远程主机进行解码回放效果不错 具体的xvid的参数可以进一步优化这里只是提供简单的范例 1. xvid 解码 1 2 /* 3 encode.cpp 4 xvid 编码YUV数据为进一步传输提供准备 5 6 */ 7 #ifndef _XVID_ENCODE_H 8 #define _XVID_ENCODE_H 9 10 #include xvid.h 11 12 struct DecodeInfo{ 13 unsigned short width; 14 unsigned short height; 15 void (*after_decode)(void * data,unsigned int size,int width,int height,void* user); 16 void * user; 17 }; 18 19 20 class Xvid_Decoder{ 21 22 public: 23 Xvid_Decoder(){ 24 } 25 bool Open(); 26 void Close(); 27 DecodeInfo GetDecodeInfo(){ return _dec_info;} 28 void decode(void *data,unsigned int size); 29 static void xvid_global_init(); 30 xvid_dec_create_t GetHandle(){ return _xvid_dec_create;} 31 private: 32 int xvid_dec(unsigned char *bitstream,int bs_size,unsigned char *image); 33 private: 34 DecodeInfo _dec_info; 35 void* _dec_handle; 36 char _image[1024*768*3]; 37 xvid_dec_create_t _xvid_dec_create; 38 }; 39 40 #endif 41 1 2 /* 3 encode.cpp 4 xvid 编码YUV数据为进一步传输提供准备 5 6 */ 7 #include xvid_dec.h 8 #include windows.h 9 10 // 11 12 13 void Xvid_Decoder::Close(){ 14 int xerr; 15 /* Destroy the encoder instance */ 16 xerr xvid_decore(_dec_handle, XVID_ENC_DESTROY, NULL, NULL); 17 } 18 19 void Xvid_Decoder::xvid_global_init(){ 20 /*------------------------------------------------------------------------ 21 * XviD core initialization 22 *----------------------------------------------------------------------*/ 23 xvid_gbl_init_t xvid_gbl_init; 24 memset(xvid_gbl_init, 0, sizeof(xvid_gbl_init)); 25 xvid_gbl_init.version XVID_VERSION; 26 xvid_gbl_init.cpu_flags XVID_CPU_FORCE; 27 /* Initialize XviD core -- Should be done once per __process__ */ 28 xvid_global(NULL, XVID_GBL_INIT, xvid_gbl_init, NULL); 29 } 30 31 bool Xvid_Decoder::Open(){ 32 int ret; 33 34 /*------------------------------------------------------------------------ 35 * XviD encoder initialization 36 *----------------------------------------------------------------------*/ 37 int width,height; 38 width _xvid_dec_create.width ; 39 height _xvid_dec_create.height; 40 memset(_xvid_dec_create, 0, sizeof(xvid_dec_create_t)); 41 _xvid_dec_create.version XVID_VERSION; 42 43 /* Width and Height of input frames */ 44 _xvid_dec_create.width width; 45 _xvid_dec_create.height height; 46 47 ret xvid_decore(NULL, XVID_DEC_CREATE, _xvid_dec_create, NULL); 48 _dec_handle _xvid_dec_create.handle; 49 return true; 50 } 51 52 void Xvid_Decoder::decode(void * data,unsigned int size){ 53 int ret; 54 ret xvid_dec((unsigned char*)data,(int)size,(unsigned char *)_image); 55 if (ret 0) 56 _dec_info.after_decode(_image,(unsigned int)ret,(int)_xvid_dec_create.width,(int)_xvid_dec_create.height,_dec_info.user); 57 } 58 59 /* 60 raw xvid_encode procedure 61 */ 62 int Xvid_Decoder::xvid_dec(unsigned char *bitstream,int bs_size,unsigned char *image) 63 { 64 int ret; 65 xvid_dec_frame_t xvid_dec_frame; 66 67 /* Reset all structures */ 68 memset(xvid_dec_frame, 0, sizeof(xvid_dec_frame_t)); 69 /* Set version */ 70 xvid_dec_frame.version XVID_VERSION; 71 // xvid_dec_stats-version XVID_VERSION; 72 73 /* No general flags to set */ 74 xvid_dec_frame.general 0; 75 76 /* Input stream */ 77 xvid_dec_frame.bitstream bitstream; 78 xvid_dec_frame.length bs_size; 79 80 /* Output frame structure */ 81 xvid_dec_frame.output.plane[0] image; 82 xvid_dec_frame.output.stride[0] _xvid_dec_create.width *3; 83 xvid_dec_frame.output.csp XVID_CSP_BGR; 84 85 ret xvid_decore(_dec_handle, XVID_DEC_DECODE, xvid_dec_frame, NULL); 86 return(ret); 87 } 88 89 90 2. xvid 编码1 2 /* 3 encode.cpp 4 xvid 编码YUV数据为进一步传输提供准备 5 6 */ 7 #ifndef _XVID_ENCODE_H 8 #define _XVID_ENCODE_H 9 10 #include xvid.h 11 #include nv.h 12 13 14 15 struct EncodeInfo{ 16 unsigned short width; 17 unsigned short height; 18 void (*after_encode)(void * data,unsigned int size,void* user); 19 void * user; 20 }; 21 22 class Xvid_Encoder:public NVObject{ 23 public: 24 Xvid_Encoder(){ _closed true; 25 } 26 bool Open(); 27 void Close(); 28 EncodeInfo GetEncodeInfo(){ return _enc_info;} 29 void encode(void *data,unsigned int size); 30 static void xvid_global_init(); 31 int xvid_enc(unsigned char *image,unsigned char *bitstream); 32 private: 33 EncodeInfo _enc_info; 34 void* _enc_handle; 35 char _bitstream[1024*100]; 36 bool _closed; 37 38 39 }; 40 41 #endif 42 1 2 /*3 encode.cpp 4 xvid 编码YUV数据为进一步传输提供准备 5 6 */7
#include encode.h8
#include windows.h9 10 11 staticconstintmotion_presets[] { 12 /*quality 0
*/13 0
, 14 15 /*quality 1
*/16 XVID_ME_ADVANCEDDIAMOND16, 17 18 /*quality 2
*/19 XVID_ME_ADVANCEDDIAMOND16
|XVID_ME_HALFPELREFINE16, 20 21 /*quality 3
*/22 XVID_ME_ADVANCEDDIAMOND16
|XVID_ME_HALFPELREFINE16
|23 XVID_ME_ADVANCEDDIAMOND8
|XVID_ME_HALFPELREFINE8, 24 25 /*quality 4
*/26 XVID_ME_ADVANCEDDIAMOND16
|XVID_ME_HALFPELREFINE16
|27 XVID_ME_ADVANCEDDIAMOND8
|XVID_ME_HALFPELREFINE8
|28 XVID_ME_CHROMA_PVOP
|XVID_ME_CHROMA_BVOP, 29 30 /*quality 5
*/31 XVID_ME_ADVANCEDDIAMOND16
|XVID_ME_HALFPELREFINE16
|32 XVID_ME_ADVANCEDDIAMOND8
|XVID_ME_HALFPELREFINE8
|33 XVID_ME_CHROMA_PVOP
|XVID_ME_CHROMA_BVOP, 34 35 /*quality 6
*/36 XVID_ME_ADVANCEDDIAMOND16
|XVID_ME_HALFPELREFINE16
|XVID_ME_EXTSEARCH16
|37 XVID_ME_ADVANCEDDIAMOND8
|XVID_ME_HALFPELREFINE8
|XVID_ME_EXTSEARCH8
|38 XVID_ME_CHROMA_PVOP
|XVID_ME_CHROMA_BVOP, 39 40
}; 41 #defineME_ELEMENTS (sizeof(motion_presets)/sizeof(motion_presets[0]))42 43 staticconstintvop_presets[] { 44 /*quality 0
*/45 0
, 46 47 /*quality 1
*/48 0
, 49 50 /*quality 2
*/51 XVID_VOP_HALFPEL, 52 53 /*quality 3
*/54 XVID_VOP_HALFPEL
|XVID_VOP_INTER4V, 55 56 /*quality 4
*/57 XVID_VOP_HALFPEL
|XVID_VOP_INTER4V, 58 59 /*quality 5
*/60 XVID_VOP_HALFPEL
|XVID_VOP_INTER4V
|61 XVID_VOP_TRELLISQUANT, 62 63 /*quality 6
*/64 XVID_VOP_HALFPEL
|XVID_VOP_INTER4V
|65 XVID_VOP_TRELLISQUANT
|XVID_VOP_HQACPRED, 66 67
}; 68 #defineVOP_ELEMENTS (sizeof(vop_presets)/sizeof(vop_presets[0]))69 70 //71 #defineMAX_ZONES 6472 73 /*Maximum number of frames to encode
*/74 #defineABS_MAXFRAMENR 999975 76 staticintARG_STATS 0
; 77 staticintARG_DUMP 0
; 78 staticintARG_LUMIMASKING 0
; 79 staticintARG_BITRATE 0
; 80 staticintARG_SINGLE 0
; 81 staticchar*
ARG_PASS1 0
; 82 staticchar*
ARG_PASS2 0
; 83 staticintARG_QUALITY ME_ELEMENTS
-1
; 84 staticfloatARG_FRAMERATE 25.00f
; 85 staticintARG_MAXFRAMENR ABS_MAXFRAMENR; 86 staticintARG_MAXKEYINTERVAL 0
; 87 staticchar*
ARG_INPUTFILE NULL; 88 staticintARG_INPUTTYPE 0
; 89 staticintARG_SAVEMPEGSTREAM 0
; 90 staticintARG_SAVEINDIVIDUAL 0
; 91 staticchar*
ARG_OUTPUTFILE NULL; 92 93 staticintARG_BQRATIO 150
; 94 staticintARG_BQOFFSET 100
; 95 staticintARG_MAXBFRAMES 0
; 96 staticintARG_PACKED 0
; 97 98 staticintARG_VOPDEBUG 0
; 99 staticintARG_GMC 0
;
100 staticintARG_INTERLACING 0
;
101 staticintARG_QPEL 0
;
102 staticintARG_CLOSED_GOP 0
;
103 104
#ifndef READ_PNM
105 #defineIMAGE_SIZE(x,y) ((x)*(y)*3/2)106 #else107 #defineIMAGE_SIZE(x,y) ((x)*(y)*3)108 #endif109 110 #defineMAX(A,B) ( ((A)(B)) ? (A) : (B) )111 #defineSMALL_EPS (1e-10)112 113 #defineSWAP(a) ( (((a)0x000000ff)24) | (((a)0x0000ff00)8) | \114
(((a)0x00ff0000
)8
)
|(((a)0xff000000
)24
) )
115 116 117 //118 119 120 voidXvid_Encoder::Close(){
121 intxerr;
122 NVMutexLock
lock
(_lock);
123 124 _closed true
;
125 /*Destroy the encoder instance
*/126 xerr xvid_encore(_enc_handle, XVID_ENC_DESTROY, NULL, NULL);
127 128
}
129 130 voidXvid_Encoder::xvid_global_init(){
131 /*
------------------------------------------------------------------------
132 * XviD core initialization
133 *----------------------------------------------------------------------
*/134 xvid_gbl_init_t xvid_gbl_init;
135 memset(xvid_gbl_init,
0
,
sizeof
(xvid_gbl_init));
136 xvid_gbl_init.version XVID_VERSION;
137 xvid_gbl_init.cpu_flags XVID_CPU_FORCE;
138 /*Initialize XviD core -- Should be done once per __process__
*/139 xvid_global(NULL, XVID_GBL_INIT, xvid_gbl_init, NULL);
140
}
141 142 boolXvid_Encoder::Open(){
143 intxerr;
144 xvid_enc_create_t xvid_enc_create;
145 _closed false
;
146 /*
------------------------------------------------------------------------
147 * XviD encoder initialization
148 *----------------------------------------------------------------------
*/149 memset(xvid_enc_create,
0
,
sizeof
(xvid_enc_create));
150 xvid_enc_create.version XVID_VERSION;
151 152 /*Width and Height of input frames
*/153 xvid_enc_create.width GetEncodeInfo().width;
154 xvid_enc_create.height GetEncodeInfo().height;
155 xvid_enc_create.profile XVID_PROFILE_AS_L4;
156 157 /*init plugins
*/158 /*159 xvid_enc_create.zones ZONES;
160 xvid_enc_create.num_zones NUM_ZONES;
161 162 xvid_enc_create.plugins plugins;
163 xvid_enc_create.num_plugins 0;
164 */165 166 167 /*No fancy thread tests
*/168 xvid_enc_create.num_threads 0
;
169 170 /*Frame rate - Do some quick float fps fincr/fbase hack
*/171 xvid_enc_create.fincr 1
;
172 xvid_enc_create.fbase (
int
)
10
;
173 /*Maximum key frame interval
*/174 xvid_enc_create.max_key_interval (
int
)
-
1
;
//
--default 10s175 /*Bframes settings
*/176 xvid_enc_create.max_bframes ARG_MAXBFRAMES;
177 xvid_enc_create.bquant_ratio ARG_BQRATIO;
178 xvid_enc_create.bquant_offset ARG_BQOFFSET;
179 180 /*Dropping ratio frame -- we dont need that
*/181 xvid_enc_create.frame_drop_ratio 0
;
182 /*Global encoder options
*/183 xvid_enc_create.global 0
;
184 185 if(ARG_PACKED)
186 xvid_enc_create.global
|XVID_GLOBAL_PACKED;
187 188 if(ARG_CLOSED_GOP)
189 xvid_enc_create.global
|XVID_GLOBAL_CLOSED_GOP;
190 191 if(ARG_STATS)
192 xvid_enc_create.global
|XVID_GLOBAL_EXTRASTATS_ENABLE;
193 194 /*I use a small value here, since will not encode whole movies, but short clips
*/195 xerr xvid_encore(NULL, XVID_ENC_CREATE, xvid_enc_create, NULL);
196 _enc_handle xvid_enc_create.handle;
197 returntrue
;
198
}
199 200 voidXvid_Encoder::encode(
void*data,unsigned
intsize){
201 intret;
202 _lock.Lock();
203 if
( _closed ){
204 _lock.Unlock();
205 return
;
206 }
207 ret xvid_enc((unsigned
char
*
)data,(unsigned
char*
)_bitstream);
208 _lock.Unlock();
209 if(ret 0
)
210 _enc_info.after_encode(_bitstream,(unsigned
int
)ret,_enc_info.user);
211 212
}
213 214 /*215
raw xvid_encode procedure
216 */217 intXvid_Encoder::xvid_enc(unsigned
char*
image,unsigned
char*
bitstream)
218
{
219 intret;
220 xvid_enc_frame_t xvid_enc_frame;
221 xvid_enc_stats_t xvid_enc_stats;
222 223 /*Version for the frame and the stats
*/224 memset(xvid_enc_frame,
0
,
sizeof
(xvid_enc_frame));
225 xvid_enc_frame.version XVID_VERSION;
226 227 memset(xvid_enc_stats,
0
,
sizeof
(xvid_enc_stats));
228 xvid_enc_stats.version XVID_VERSION;
229 230 /*Bind output buffer
*/231 xvid_enc_frame.bitstream bitstream;
232 xvid_enc_frame.length -
1
;
233 234 /*Initialize input image fields
*/235 xvid_enc_frame.input.plane[
0
] image;
236 xvid_enc_frame.input.csp XVID_CSP_BGR;
237 xvid_enc_frame.input.stride[
0
] _enc_info.width
*
3
;
238 239 240 /*Set up cores general features
*/241 xvid_enc_frame.vol_flags 0
;
242 243 /*Set up cores general features
*/244 xvid_enc_frame.vop_flags vop_presets[ARG_QUALITY
-
2
];
245 246 /*Frame type -- let core decide for us
*/247 xvid_enc_frame.type XVID_TYPE_AUTO;
248 249 /*Force the right quantizer -- It is internally managed by RC plugins
*/250 xvid_enc_frame.quant 0
;
251 252 /*Set up motion estimation flags
*/253 xvid_enc_frame.motion motion_presets[ARG_QUALITY
-
2
];
254 255 /*We dont use special matrices
*/256 xvid_enc_frame.quant_intra_matrix NULL;
257 xvid_enc_frame.quant_inter_matrix NULL;
258 259 /*Encode the frame
*/260 ret xvid_encore(_enc_handle, XVID_ENC_ENCODE, xvid_enc_frame,NULL);
261 //xvid_enc_stats);
262 //
--判别是否是关键帧
263 //
*key (xvid_enc_frame.out_flags XVID_KEYFRAME);
264 //
*stats_type xvid_enc_stats.type;
265 //
*stats_quant xvid_enc_stats.quant;
266 //
*stats_length xvid_enc_stats.length;
267 //
sse[0] xvid_enc_stats.sse_y;
268 //
sse[1] xvid_enc_stats.sse_u;
269 //
sse[2] xvid_enc_stats.sse_v;270 271 return(ret);
272
}
273 274 275
