由于視頻開發(fā)的需求，封裝xvid c調(diào)用接口，使之優(yōu)雅易用
我已經(jīng)對(duì)pc camera視頻流(RGB)進(jìn)行嘗試，編碼之后傳輸?shù)竭h(yuǎn)程主機(jī)進(jìn)行解碼回放，效果不錯(cuò)
具體的xvid的參數(shù)可以進(jìn)一步優(yōu)化，這里只是提供簡(jiǎn)單的范例
1. xvid 解碼

?1?
?2?/*
?3?????encode.cpp
?4?????xvid?編碼YUV數(shù)據(jù)，為進(jìn)一步傳輸提供準(zhǔn)備
?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?編碼YUV數(shù)據(jù)，為進(jìn)一步傳輸提供準(zhǔn)備
?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 編碼
?1?
?2?/*
?3?????encode.cpp
?4?????xvid?編碼YUV數(shù)據(jù)，為進(jìn)一步傳輸提供準(zhǔn)備
?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?編碼YUV數(shù)據(jù)，為進(jìn)一步傳輸提供準(zhǔn)備
??5?
??6? */
??7? #include? " encode.h "
??8? #include? < windows.h >
??9?
?10?
?11? static ? const ? int ?motion_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? #define ?ME_ELEMENTS?(sizeof(motion_presets)/sizeof(motion_presets[0]))
?42?
?43? static ? const ? int ?vop_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? #define ?VOP_ELEMENTS?(sizeof(vop_presets)/sizeof(vop_presets[0]))
?69?
?70? //
?71? #define ?MAX_ZONES???64
?72?
?73? /* ?Maximum?number?of?frames?to?encode? */
?74? #define ?ABS_MAXFRAMENR?9999
?75?
?76? static ? int ?ARG_STATS? = ? 0 ;
?77? static ? int ?ARG_DUMP? = ? 0 ;
?78? static ? int ?ARG_LUMIMASKING? = ? 0 ;
?79? static ? int ?ARG_BITRATE? = ? 0 ;
?80? static ? int ?ARG_SINGLE? = ? 0 ;
?81? static ? char ? * ARG_PASS1? = ? 0 ;
?82? static ? char ? * ARG_PASS2? = ? 0 ;
?83? static ? int ?ARG_QUALITY? = ?ME_ELEMENTS? - ? 1 ;
?84? static ? float ?ARG_FRAMERATE? = ? 25.00f ;
?85? static ? int ?ARG_MAXFRAMENR? = ?ABS_MAXFRAMENR;
?86? static ? int ?ARG_MAXKEYINTERVAL? = ? 0 ;
?87? static ? char ? * ARG_INPUTFILE? = ?NULL;
?88? static ? int ?ARG_INPUTTYPE? = ? 0 ;
?89? static ? int ?ARG_SAVEMPEGSTREAM? = ? 0 ;
?90? static ? int ?ARG_SAVEINDIVIDUAL? = ? 0 ;
?91? static ? char ? * ARG_OUTPUTFILE? = ?NULL;
?92?
?93? static ? int ?ARG_BQRATIO? = ? 150 ;
?94? static ? int ?ARG_BQOFFSET? = ? 100 ;
?95? static ? int ?ARG_MAXBFRAMES? = ? 0 ;
?96? static ? int ?ARG_PACKED? = ? 0 ;
?97?
?98? static ? int ?ARG_VOPDEBUG? = ? 0 ;
?99? static ? int ?ARG_GMC? = ? 0 ;
100? static ? int ?ARG_INTERLACING? = ? 0 ;
101? static ? int ?ARG_QPEL? = ? 0 ;
102? static ? int ?ARG_CLOSED_GOP? = ? 0 ;
103?
104? #ifndef?READ_PNM
105? #define ?IMAGE_SIZE(x,y)?((x)*(y)*3/2)
106? #else
107? #define ?IMAGE_SIZE(x,y)?((x)*(y)*3)
108? #endif
109?
110? #define ?MAX(A,B)?(?((A)>(B))???(A)?:?(B)?)
111? #define ?SMALL_EPS?(1e-10)
112?
113? #define ?SWAP(a)?(?(((a)&0x000000ff)<<24)?|?(((a)&0x0000ff00)<<8)?|?\
114? (((a) & 0x00ff0000 ) >> 8 )?? | ?(((a) & 0xff000000 ) >> 24 )?)
115?
116?
117? //
118?
119?
120? void ?Xvid_Encoder::Close(){
121? ???? int ?xerr;????
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? void ?Xvid_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? bool ?Xvid_Encoder::Open(){
143? ???? int ?xerr;????????
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?10s
175? ???? /* ?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?don't?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? ???? return ? true ;
198? }
199?
200? void ?Xvid_Encoder::encode( void ? * ?data,unsigned? int ?size){
201? ???? int ?ret;????
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? int ?Xvid_Encoder::xvid_enc(unsigned? char ? * image,unsigned? char ? * bitstream)
218? {
219? ???? int ?ret;????
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?core's?general?features? */
241? ????xvid_enc_frame.vol_flags? = ? 0 ;
242? ????
243? ???? /* ?Set?up?core's?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?don't?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? ???? // --判別是否是關(guān)鍵幀
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

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