Android本地视频播放器开发--SDL编译
来源:互联网 发布:python .fillna 编辑:程序博客网 时间:2024/06/03 21:38
在上一章 查看EGL的支持是在2.3版本以上,所以我们需要添加平台的支持,所以需要在jni目录下面创建一个Application.mk文件来指定编译平台,内容如下:四、在jni目录终端下运行ndk-build,就会编译出libSDL2.so,编译过程如下:编译出sdl库后,我们就可以调用它的相关函数来实现我们的功能了。
Android本地视频播放器开发--ffmpeg解码视频文件中的音频(2)中使用OpenSL ES来播放视频的声音,遗留的问题是声音的不同步,由于视频实现部分也要同步,而且音视频也要同步,所以音频部分就不单独同步问题,当同时播放音视频的时候进行两者的同步问题,对于视频显示部分最后是要使用OpenGL es来实现,由于SDL可以和OpenGL ES进行搭配,所以使用SDL+OpenGL ES进行显示视频,所以这章将要讲解的是SDL的交叉编译.
一、到官网下载http://www.libsdl.org/hg.php 下载2.0的源码也可以通过hg来clone最新的源码
hg clone http://hg.libsdl.org/SDL
二、其实1.3以后的版本就添加了android的支持,所以下载完源码后,在SDL目录下创建一个jni的目录,然后将原先SDL目录下面的文件以及文件夹都拷贝到jni目录下面,在jni目录下面我们会看见一个android.mk的文件,这就是官方给我们编写的编译文件,由于手机基本上都是使用的arm编译器,所以我在里面添加了LOCAL_ARM_MODE=arm,模块的编译使用arm编译器来编译,具体的内容如下:
- ###########################
- #
- # SDL shared library
- #
- ###########################
- include $(CLEAR_VARS)
- LOCAL_MODULE := SDL2
- LOCAL_ARM_MODE=arm
- LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
- LOCAL_SRC_FILES := \
- $(subst $(LOCAL_PATH)/,, \
- $(wildcard $(LOCAL_PATH)/src/*.c) \
- $(wildcard $(LOCAL_PATH)/src/audio/*.c) \
- $(wildcard $(LOCAL_PATH)/src/audio/android/*.c) \
- $(wildcard $(LOCAL_PATH)/src/audio/dummy/*.c) \
- $(LOCAL_PATH)/src/atomic/SDL_atomic.c \
- $(LOCAL_PATH)/src/atomic/SDL_spinlock.c.arm \
- $(wildcard $(LOCAL_PATH)/src/core/android/*.cpp) \
- $(wildcard $(LOCAL_PATH)/src/cpuinfo/*.c) \
- $(wildcard $(LOCAL_PATH)/src/events/*.c) \
- $(wildcard $(LOCAL_PATH)/src/file/*.c) \
- $(wildcard $(LOCAL_PATH)/src/haptic/*.c) \
- $(wildcard $(LOCAL_PATH)/src/haptic/dummy/*.c) \
- $(wildcard $(LOCAL_PATH)/src/joystick/*.c) \
- $(wildcard $(LOCAL_PATH)/src/joystick/android/*.c) \
- $(wildcard $(LOCAL_PATH)/src/loadso/dlopen/*.c) \
- $(wildcard $(LOCAL_PATH)/src/power/*.c) \
- $(wildcard $(LOCAL_PATH)/src/power/android/*.c) \
- $(wildcard $(LOCAL_PATH)/src/render/*.c) \
- $(wildcard $(LOCAL_PATH)/src/render/*/*.c) \
- $(wildcard $(LOCAL_PATH)/src/stdlib/*.c) \
- $(wildcard $(LOCAL_PATH)/src/thread/*.c) \
- $(wildcard $(LOCAL_PATH)/src/thread/pthread/*.c) \
- $(wildcard $(LOCAL_PATH)/src/timer/*.c) \
- $(wildcard $(LOCAL_PATH)/src/timer/unix/*.c) \
- $(wildcard $(LOCAL_PATH)/src/video/*.c) \
- $(wildcard $(LOCAL_PATH)/src/video/android/*.c))
- LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES
- LOCAL_LDLIBS := -ldl -lGLESv1_CM -lGLESv2 -llog
- include $(BUILD_SHARED_LIBRARY)
三、如果直接编译的话会提示如下错误
- /home/SDL/jni/src/core/android/SDL_android.cpp:30:21: fatal error: EGL/egl.h: No such file or directory
- APP_ABI := armeabi
- APP_PLATFORM := android-9
- root@zhangjie:/home/SDL/jni# ndk-build
- Compile arm : SDL2 <= SDL_assert.c
- Compile arm : SDL2 <= SDL.c
- Compile arm : SDL2 <= SDL_error.c
- Compile arm : SDL2 <= SDL_fatal.c
- Compile arm : SDL2 <= SDL_hints.c
- Compile arm : SDL2 <= SDL_log.c
- Compile arm : SDL2 <= SDL_audio.c
- Compile arm : SDL2 <= SDL_audiocvt.c
- Compile arm : SDL2 <= SDL_audiodev.c
- Compile arm : SDL2 <= SDL_audiotypecvt.c
- Compile arm : SDL2 <= SDL_mixer.c
- Compile arm : SDL2 <= SDL_wave.c
- Compile arm : SDL2 <= SDL_androidaudio.c
- Compile arm : SDL2 <= SDL_dummyaudio.c
- Compile arm : SDL2 <= SDL_atomic.c
- Compile arm : SDL2 <= SDL_spinlock.c
- Compile++ arm : SDL2 <= SDL_android.cpp
- Compile arm : SDL2 <= SDL_cpuinfo.c
- Compile arm : SDL2 <= SDL_clipboardevents.c
- Compile arm : SDL2 <= SDL_dropevents.c
- Compile arm : SDL2 <= SDL_events.c
- Compile arm : SDL2 <= SDL_gesture.c
- Compile arm : SDL2 <= SDL_keyboard.c
- Compile arm : SDL2 <= SDL_mouse.c
- Compile arm : SDL2 <= SDL_quit.c
- Compile arm : SDL2 <= SDL_touch.c
- Compile arm : SDL2 <= SDL_windowevents.c
- Compile arm : SDL2 <= SDL_rwops.c
- Compile arm : SDL2 <= SDL_haptic.c
- Compile arm : SDL2 <= SDL_syshaptic.c
- Compile arm : SDL2 <= SDL_gamecontroller.c
- Compile arm : SDL2 <= SDL_joystick.c
- Compile arm : SDL2 <= SDL_sysjoystick.c
- Compile arm : SDL2 <= SDL_sysloadso.c
- Compile arm : SDL2 <= SDL_power.c
- Compile arm : SDL2 <= SDL_syspower.c
- Compile arm : SDL2 <= SDL_render.c
- Compile arm : SDL2 <= SDL_yuv_mmx.c
- Compile arm : SDL2 <= SDL_yuv_sw.c
- Compile arm : SDL2 <= SDL_render_d3d.c
- Compile arm : SDL2 <= SDL_render_gles2.c
- Compile arm : SDL2 <= SDL_shaders_gles2.c
- Compile arm : SDL2 <= SDL_render_gles.c
- Compile arm : SDL2 <= SDL_render_gl.c
- Compile arm : SDL2 <= SDL_shaders_gl.c
- Compile arm : SDL2 <= SDL_render_psp.c
- Compile arm : SDL2 <= SDL_blendfillrect.c
- Compile arm : SDL2 <= SDL_blendline.c
- Compile arm : SDL2 <= SDL_blendpoint.c
- Compile arm : SDL2 <= SDL_drawline.c
- Compile arm : SDL2 <= SDL_drawpoint.c
- Compile arm : SDL2 <= SDL_render_sw.c
- Compile arm : SDL2 <= SDL_rotate.c
- Compile arm : SDL2 <= SDL_getenv.c
- Compile arm : SDL2 <= SDL_iconv.c
- Compile arm : SDL2 <= SDL_malloc.c
- Compile arm : SDL2 <= SDL_qsort.c
- Compile arm : SDL2 <= SDL_stdlib.c
- Compile arm : SDL2 <= SDL_string.c
- Compile arm : SDL2 <= SDL_thread.c
- Compile arm : SDL2 <= SDL_syscond.c
- Compile arm : SDL2 <= SDL_sysmutex.c
- Compile arm : SDL2 <= SDL_syssem.c
- Compile arm : SDL2 <= SDL_systhread.c
- Compile arm : SDL2 <= SDL_timer.c
- Compile arm : SDL2 <= SDL_systimer.c
- Compile arm : SDL2 <= SDL_blit_0.c
- Compile arm : SDL2 <= SDL_blit_1.c
- Compile arm : SDL2 <= SDL_blit_A.c
- Compile arm : SDL2 <= SDL_blit_auto.c
- Compile arm : SDL2 <= SDL_blit.c
- Compile arm : SDL2 <= SDL_blit_copy.c
- Compile arm : SDL2 <= SDL_blit_N.c
- Compile arm : SDL2 <= SDL_blit_slow.c
- Compile arm : SDL2 <= SDL_bmp.c
- Compile arm : SDL2 <= SDL_clipboard.c
- Compile arm : SDL2 <= SDL_fillrect.c
- Compile arm : SDL2 <= SDL_pixels.c
- Compile arm : SDL2 <= SDL_rect.c
- Compile arm : SDL2 <= SDL_RLEaccel.c
- Compile arm : SDL2 <= SDL_shape.c
- Compile arm : SDL2 <= SDL_stretch.c
- Compile arm : SDL2 <= SDL_surface.c
- Compile arm : SDL2 <= SDL_video.c
- Compile arm : SDL2 <= SDL_androidclipboard.c
- Compile arm : SDL2 <= SDL_androidevents.c
- Compile arm : SDL2 <= SDL_androidgl.c
- Compile arm : SDL2 <= SDL_androidkeyboard.c
- Compile arm : SDL2 <= SDL_androidtouch.c
- Compile arm : SDL2 <= SDL_androidvideo.c
- Compile arm : SDL2 <= SDL_androidwindow.c
- StaticLibrary : libstdc++.a
- SharedLibrary : libSDL2.so
- Install : libSDL2.so => libs/armeabi/libSDL2.so
下一章将要使用ffmpeg来解码视频文件
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