移植FFmpeg到android ics

想弄个小东西，自己练习一下，就想到把FFmpeg移植到android上面

网上有现成的2.2的移植，可以下载下来，链接https://github.com/havlenapetr，里面的ffmpeg和framework下面的libaudio和libviedo两个so，就是全部的东西。

看过一些东西，都说不开放某些代码，挺没劲的，人家都已经放出全部代码了，有什么藏匿的。

app下面的代码几乎不需要修改，就是一些编译的错误，就是framework下面的本地适配需要需要改一下，适应一下ics，就是surface.cpp这个文件。

[cpp] view plain copy

1. /*
2. *Copyright(C)2009TheAndroidOpenSourceProject
3. *
4. *LicensedundertheApacheLicense,Version2.0(the"License");
5. *youmaynotusethisfileexceptincompliancewiththeLicense.
6. *YoumayobtainacopyoftheLicenseat
7. *
8. *http://www.apache.org/licenses/LICENSE-2.0
9. *
10. *Unlessrequiredbyapplicablelaworagreedtoinwriting,software
11. *distributedundertheLicenseisdistributedonan"ASIS"BASIS,
12. *WITHOUTWARRANTIESORCONDITIONSOFANYKIND,eitherexpressorimplied.
13. *SeetheLicenseforthespecificlanguagegoverningpermissionsand
14. *limitationsundertheLicense.
15. */
16. #include<android/surface.h>
17. #include<surfaceflinger/Surface.h>
18. #include<utils/Log.h>
19. #include<SkBitmap.h>
20. #include<SkCanvas.h>
22. #defineTAG"SurfaceWrapper"
24. usingnamespaceandroid;
26. staticSurface*sSurface;
27. staticSkBitmapsBitmapClient;
28. staticSkBitmapsBitmapSurface;
30. staticSurface*getNativeSurface(JNIEnv*env,jobjectjsurface)
31. {
32. jclassclazz=env->FindClass("android/view/Surface");
33. jfieldIDfield_surface=env->GetFieldID(clazz,"mNativeSurface","I");
34. if(field_surface==NULL)
35. {
36. returnNULL;
37. }
38. return(Surface*)env->GetIntField(jsurface,field_surface);
39. }
41. staticintinitBitmap(SkBitmap*bitmap,intformat,intwidth,intheight,boolallocPixels)
42. {
43. switch(format)
44. {
45. casePIXEL_FORMAT_RGBA_8888:
46. bitmap->setConfig(SkBitmap::kARGB_8888_Config,width,height);
47. break;
49. casePIXEL_FORMAT_RGBA_4444:
50. bitmap->setConfig(SkBitmap::kARGB_4444_Config,width,height);
51. break;
53. casePIXEL_FORMAT_RGB_565:
54. bitmap->setConfig(SkBitmap::kRGB_565_Config,width,height);
55. break;
57. casePIXEL_FORMAT_A_8:
58. bitmap->setConfig(SkBitmap::kA8_Config,width,height);
59. break;
61. default:
62. bitmap->setConfig(SkBitmap::kNo_Config,width,height);
63. break;
64. }
66. if(allocPixels)
67. {
68. bitmap->setIsOpaque(true);
69. //--allocarrayofpixels
70. if(!bitmap->allocPixels())
71. {
72. return-1;
73. }
74. }
75. return0;
76. }
78. intAndroidSurface_register(JNIEnv*env,jobjectjsurface)
79. {
80. __android_log_print(ANDROID_LOG_INFO,TAG,"registeringvideosurface");
82. sSurface=getNativeSurface(env,jsurface);
83. if(sSurface==NULL)
84. {
85. returnANDROID_SURFACE_RESULT_JNI_EXCEPTION;
86. }
88. __android_log_print(ANDROID_LOG_INFO,TAG,"registered");
90. returnANDROID_SURFACE_RESULT_SUCCESS;
91. }
93. intAndroidSurface_getPixels(intwidth,intheight,void**pixels)
94. {
95. __android_log_print(ANDROID_LOG_INFO,TAG,"gettingsurface'spixels%ix%i",width,height);
96. if(sSurface==NULL)
97. {
98. returnANDROID_SURFACE_RESULT_JNI_EXCEPTION;
99. }
100. if(initBitmap(&sBitmapClient,PIXEL_FORMAT_RGB_565,width,height,true)<0)
101. {
102. returnANDROID_SURFACE_RESULT_COULDNT_INIT_BITMAP_CLIENT;
103. }
104. *pixels=sBitmapClient.getPixels();
105. __android_log_print(ANDROID_LOG_INFO,TAG,"getted");
106. returnANDROID_SURFACE_RESULT_SUCCESS;
107. }
109. staticvoiddoUpdateSurface()
110. {
111. SkCanvascanvas(sBitmapSurface);
112. SkRectsurface_sBitmapClient;
113. SkRectsurface_sBitmapSurface;
114. SkMatrixmatrix;
116. surface_sBitmapSurface.set(0,0,sBitmapSurface.width(),sBitmapSurface.height());
117. surface_sBitmapClient.set(0,0,sBitmapClient.width(),sBitmapClient.height());
118. matrix.setRectToRect(surface_sBitmapClient,surface_sBitmapSurface,SkMatrix::kFill_ScaleToFit);
120. canvas.drawBitmapMatrix(sBitmapClient,matrix);
121. }
123. staticintprepareSurfaceBitmap(Surface::SurfaceInfo*info)
124. {
125. if(initBitmap(&sBitmapSurface,info->format,info->w,info->h,false)<0)
126. {
127. return-1;
128. }
129. sBitmapSurface.setPixels(info->bits);
130. return0;
131. }
133. intAndroidSurface_updateSurface()
134. {
135. staticSurface::SurfaceInfosurfaceInfo;
136. if(sSurface==NULL)
137. {
138. returnANDROID_SURFACE_RESULT_JNI_EXCEPTION;
139. }
141. if(!Surface::isValid(sSurface))
142. {
143. returnANDROID_SURFACE_RESULT_NOT_VALID;
144. }
145. if(sSurface->lock(&surfaceInfo,NULL)<0)
146. {
147. returnANDROID_SURFACE_RESULT_COULDNT_LOCK;
148. }
150. if(prepareSurfaceBitmap(&surfaceInfo)<0)
151. {
152. returnANDROID_SURFACE_RESULT_COULDNT_INIT_BITMAP_SURFACE;
153. }
155. doUpdateSurface();
157. if(sSurface->unlockAndPost()<0)
158. {
159. returnANDROID_SURFACE_RESULT_COULDNT_UNLOCK_AND_POST;
160. }
161. returnANDROID_SURFACE_RESULT_SUCCESS;
162. }
164. intAndroidSurface_unregister()
165. {
166. __android_log_print(ANDROID_LOG_INFO,TAG,"unregisteringvideosurface");
167. __android_log_print(ANDROID_LOG_INFO,TAG,"unregistered");
168. returnANDROID_SURFACE_RESULT_SUCCESS;
169. }

改完以后，编译出来的apk就是可以播放的，但是效果相当的差，问题太多了，需要时间来分析一下。