我将Android下的ffmpeg和SDL端口收集在一起.开始使用此处描述的程序：http://dranger.com/ffmpeg/tutorial03.html(ffmpeg SDL需要播放器).编译并运行,但执行以下功能：
SDL_OpenAudio(& wanted_spec,& spec)
在日志中写道：
03-15 14:09:42.856: VERBOSE/SDL(436): SDL audio: opening device
03-15 14:09:42.976: INFO/DEBUG(31): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
03-15 14:09:42.976: INFO/DEBUG(31): Build fingerprint: 'generic/sdk/generic/:2.2/FRF91/43546:eng/test-keys'
03-15 14:09:42.986: INFO/DEBUG(31): pid: 436, tid: 436 >>> org.libsdl.app
03-15 14:09:42.986: INFO/DEBUG(31): signal 11 (SIGSEGV), fault addr 00000000
03-15 14:09:42.986: INFO/DEBUG(31): r0 00000000 r1 00000000 r2 00000000 r3 be9587e4
03-15 14:09:42.996: INFO/DEBUG(31): r4 000001cc r5 80a7436c r6 00004bb4 r7 ffff844c
03-15 14:09:42.996: INFO/DEBUG(31): r8 00000400 r9 00000000 10 0000ac44 fp 00000000
03-15 14:09:43.006: INFO/DEBUG(31): ip 00000000 sp be9587c8 lr 80a66411 pc 80a663ac cpsr 00000030
03-15 14:09:43.246: INFO/DEBUG(31): #00 pc 000663ac /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.257: INFO/DEBUG(31): #01 pc 0006640c /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.257: INFO/DEBUG(31): #02 pc 0006526c /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.266: INFO/DEBUG(31): #03 pc 0002a5ba /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.277: INFO/DEBUG(31): #04 pc 0002aad0 /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.277: INFO/DEBUG(31): #05 pc 00024d72 /data/data/org.libsdl.app/lib/libtest.so
03-15 14:09:43.300: INFO/DEBUG(31): #06 pc 00013974 /system/lib/libdvm.so
03-15 14:09:43.300: INFO/DEBUG(31): #07 pc 0003de3c /system/lib/libdvm.so
03-15 14:09:43.306: INFO/DEBUG(31): #08 pc 00037216 /system/lib/libdvm.so
03-15 14:09:43.316: INFO/DEBUG(31): #09 pc 000432ec /system/lib/libdvm.so
03-15 14:09:43.316: INFO/DEBUG(31): #10 pc 00018714 /system/lib/libdvm.so
03-15 14:09:43.327: INFO/DEBUG(31): #11 pc 0001e8c4 /system/lib/libdvm.so
03-15 14:09:43.327: INFO/DEBUG(31): #12 pc 0001d790 /system/lib/libdvm.so
03-15 14:09:43.337: INFO/DEBUG(31): #13 pc 0005408e /system/lib/libdvm.so
03-15 14:09:43.347: INFO/DEBUG(31): #14 pc 0005bde2 /system/lib/libdvm.so
03-15 14:09:43.347: INFO/DEBUG(31): #15 pc 00018714 /system/lib/libdvm.so
03-15 14:09:43.357: INFO/DEBUG(31): #16 pc 0001e8c4 /system/lib/libdvm.so
03-15 14:09:43.357: INFO/DEBUG(31): #17 pc 0001d790 /system/lib/libdvm.so
03-15 14:09:43.376: INFO/DEBUG(31): #18 pc 00053eec /system/lib/libdvm.so
03-15 14:09:43.376: INFO/DEBUG(31): #19 pc 0004072c /system/lib/libdvm.so
03-15 14:09:43.387: INFO/DEBUG(31): #20 pc 00034454 /system/lib/libdvm.so
03-15 14:09:43.397: INFO/DEBUG(31): #21 pc 0002c930 /system/lib/libandroid_runtime.so
03-15 14:09:43.397: INFO/DEBUG(31): #22 pc 0002d85c /system/lib/libandroid_runtime.so
03-15 14:09:43.407: INFO/DEBUG(31): #23 pc 00008c86 /system/bin/app_process
03-15 14:09:43.417: INFO/DEBUG(31): #24 pc 0000d362 /system/lib/libc.so
03-15 14:09:43.417: INFO/DEBUG(31): code around pc:
03-15 14:09:43.427: INFO/DEBUG(31): 80a6638c ff8ef7ff 46c0bd10 0000dfe6 00004bb4
03-15 14:09:43.427: INFO/DEBUG(31): 80a6639c b530b40c ab06b083 24e6cb04 93010064
03-15 14:09:43.437: INFO/DEBUG(31): 80a663ac 592c6805 b00347a0 bc08bc30 4718b002
03-15 14:09:43.437: INFO/DEBUG(31): 80a663bc 4657b5f0 b4c04646 1c144d30 4a314f30
03-15 14:09:43.447: INFO/DEBUG(31): 80a663cc 1c0e447d 063618aa 4682b087 200219e9
03-15 14:09:43.447: INFO/DEBUG(31): code around lr:
03-15 14:09:43.457: INFO/DEBUG(31): 80a663f0 19acdd3f 54a32238 69616922 6be24694
03-15 14:09:43.457: INFO/DEBUG(31): 80a66400 46439301 93029000 46534660 ffc6f7ff
03-15 14:09:43.457: INFO/DEBUG(31): 80a66410 61e01c01 d02e2800 68036920 47986d5b
03-15 14:09:43.477: INFO/DEBUG(31): 80a66420 2300466a 70133217 5ce32320 61e01c01
03-15 14:09:43.477: INFO/DEBUG(31): 80a66430 d11a2b00 23b86920 009b6807 479858fb
03-15 14:09:43.477: INFO/DEBUG(31): stack:
03-15 14:09:43.487: INFO/DEBUG(31): be958788 afd4054c /system/lib/libc.so
03-15 14:09:43.487: INFO/DEBUG(31): be95878c 000003fc
03-15 14:09:43.487: INFO/DEBUG(31): be958790 8135da50 /data/data/org.libsdl.app/lib/libtest.so
03-15 14:09:43.487: INFO/DEBUG(31): be958794 afd14bd5 /system/lib/libc.so
03-15 14:09:43.487: INFO/DEBUG(31): be958798 be9587a0 [stack]
03-15 14:09:43.487: INFO/DEBUG(31): be95879c be9587a8 [stack]
03-15 14:09:43.497: INFO/DEBUG(31): be9587a0 00000001
03-15 14:09:43.497: INFO/DEBUG(31): be9587a4 00000000
03-15 14:09:43.507: INFO/DEBUG(31): be9587a8 00000000
03-15 14:09:43.507: INFO/DEBUG(31): be9587ac afd103f0 /system/lib/libc.so
03-15 14:09:43.507: INFO/DEBUG(31): be9587b0 00000003
03-15 14:09:43.507: INFO/DEBUG(31): be9587b4 afd41724 /system/lib/libc.so
03-15 14:09:43.507: INFO/DEBUG(31): be9587b8 0012ecc0 [heap]
03-15 14:09:43.507: INFO/DEBUG(31): be9587bc c0000000
03-15 14:09:43.517: INFO/DEBUG(31): be9587c0 df002777
03-15 14:09:43.517: INFO/DEBUG(31): be9587c4 e3a070ad
03-15 14:09:43.527: INFO/DEBUG(31): #00 be9587c8 00000003
03-15 14:09:43.527: INFO/DEBUG(31): be9587cc be9587e4 [stack]
03-15 14:09:43.527: INFO/DEBUG(31): be9587d0 80a7436c /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.527: INFO/DEBUG(31): be9587d4 80a78f20
03-15 14:09:43.537: INFO/DEBUG(31): be9587d8 80a7436c /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.537: INFO/DEBUG(31): be9587dc 80a66411 /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.537: INFO/DEBUG(31): be9587e0 00000000
03-15 14:09:43.537: INFO/DEBUG(31): be9587e4 0000ac44 [heap]
03-15 14:09:43.537: INFO/DEBUG(31): #01 be9587e8 00000001
03-15 14:09:43.547: INFO/DEBUG(31): be9587ec 00000001
03-15 14:09:43.547: INFO/DEBUG(31): be9587f0 00000400
03-15 14:09:43.547: INFO/DEBUG(31): be9587f4 0025b7d8 [heap]
03-15 14:09:43.557: INFO/DEBUG(31): be9587f8 40000000 /dev/ashmem/system_properties (deleted)
03-15 14:09:43.557: INFO/DEBUG(31): be9587fc afd0c7a1 /system/lib/libc.so
03-15 14:09:43.557: INFO/DEBUG(31): be958800 80a7436c /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.577: INFO/DEBUG(31): be958804 00000000
03-15 14:09:43.577: INFO/DEBUG(31): be958808 00001cac
03-15 14:09:43.577: INFO/DEBUG(31): be95880c 80a7436c /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:43.577: INFO/DEBUG(31): be958810 0025b7d8 [heap]
03-15 14:09:43.577: INFO/DEBUG(31): be958814 00008010 /system/bin/app_process
03-15 14:09:43.577: INFO/DEBUG(31): be958818 40000000 /dev/ashmem/system_properties (deleted)
03-15 14:09:43.587: INFO/DEBUG(31): be95881c 80a65271 /data/data/org.libsdl.app/lib/libSDL.so
03-15 14:09:44.477: DEBUG/Zygote(33): Process 436 terminated by signal (11)
如何解决这个问题呢？或至少这意味着在DEBUG Dunno中,如果？提前致谢.
如果您不知道如何解决,请告诉我一个有关如何通过SDL for Android播放音频的示例
解决方法:
根据我的理解,SDL仅允许操作系统访问,因此不允许在android下访问音频设备.您可能可以做的就是使用JNI调用android库函数来播放声音. http://developer.android.com/reference/android/media/AudioTrack.html
编辑：这个人似乎已经SDL与android音频一起工作.似乎最重要的难题是以下两个文件：
Audio.java-在您的主要活动中创建AudioThread的实例,它应该使用SDL设置适当的回调.
SDL_androidaudio.c-SDL声音和android声音之间的桥梁.
要使其正常运行,您可能需要做更多的工作,但这可能是一个开始.看看源代码树.
标签：ffmpeg,sdl,audio,android 来源： https://codeday.me/bug/20191208/2092737.html
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