Initial alsa support

Makefile

@@ -2,13 +2,14 @@ include Makefile.include
 
 CFLAGS+=-std=c++0x -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -DTARGET_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DHAVE_CMAKE_CONFIG -D__VIDEOCORE4__ -U_FORTIFY_SOURCE -Wall -DHAVE_OMXLIB -DUSE_EXTERNAL_FFMPEG  -DHAVE_LIBAVCODEC_AVCODEC_H -DHAVE_LIBAVUTIL_OPT_H -DHAVE_LIBAVUTIL_MEM_H -DHAVE_LIBAVUTIL_AVUTIL_H -DHAVE_LIBAVFORMAT_AVFORMAT_H -DHAVE_LIBAVFILTER_AVFILTER_H -DHAVE_LIBSWRESAMPLE_SWRESAMPLE_H -DOMX -DOMX_SKIP64BIT -ftree-vectorize -DUSE_EXTERNAL_OMX -DTARGET_RASPBERRY_PI -DUSE_EXTERNAL_LIBBCM_HOST
 
-LDFLAGS+=-L./ -Lffmpeg_compiled/usr/local/lib/ -lc -lWFC -lGLESv2 -lEGL -lbcm_host -lopenmaxil -lfreetype -lz
+LDFLAGS+=-L./ -Lffmpeg_compiled/usr/local/lib/ -lc -lWFC -lGLESv2 -lEGL -lbcm_host -lopenmaxil -lfreetype -lz -lasound
 
 INCLUDES+=-I./ -Ilinux -Iffmpeg_compiled/usr/local/include/ -I /usr/include/dbus-1.0 -I /usr/lib/arm-linux-gnueabihf/dbus-1.0/include
 
 DIST ?= omxplayer-dist
 
-SRC=linux/XMemUtils.cpp \
+SRC=		linux/XMemUtils.cpp \
+		linux/OMXAlsa.cpp \
 		utils/log.cpp \
 		DynamicDll.cpp \
 		utils/PCMRemap.cpp \

OMXAudio.cpp

@@ -112,6 +112,11 @@ bool COMXAudio::PortSettingsChanged()
     if(!m_omx_render_hdmi.Initialize("OMX.broadcom.audio_render", OMX_IndexParamAudioInit))
       return false;
   }
+  if (m_config.device == "omx:alsa")
+  {
+    if(!m_omx_render_analog.Initialize("OMX.alsa.audio_render", OMX_IndexParamAudioInit))
+      return false;
+  }
 
   UpdateAttenuation();
 
@@ -235,7 +240,7 @@ bool COMXAudio::PortSettingsChanged()
 
     OMX_CONFIG_BRCMAUDIODESTINATIONTYPE audioDest;
     OMX_INIT_STRUCTURE(audioDest);
-    strncpy((char *)audioDest.sName, "local", strlen("local"));
+    strncpy((char *)audioDest.sName, m_config.device == "omx:alsa" ? m_config.subdevice.c_str() : "local", sizeof(audioDest.sName));
     omx_err = m_omx_render_analog.SetConfig(OMX_IndexConfigBrcmAudioDestination, &audioDest);
     if (omx_err != OMX_ErrorNone)
     {

OMXAudio.h

@@ -46,6 +46,7 @@ class OMXAudioConfig
   COMXStreamInfo hints;
   bool use_thread;
   CStdString device;
+  CStdString subdevice;
   enum PCMLayout layout;
   bool boostOnDownmix;
   bool passthrough;

OMXCore.cpp

@@ -35,6 +35,7 @@
 
 #ifdef TARGET_LINUX
 #include "XMemUtils.h"
+#include "OMXAlsa.h"
 #endif
 
 //#define OMX_DEBUG_EVENTS
@@ -1429,6 +1430,11 @@ bool COMXCoreComponent::Initialize( const std::string &component_name, OMX_INDEX
   // Get video component handle setting up callbacks, component is in loaded state on return.
   if(!m_handle)
   {
+#ifdef TARGET_LINUX
+    if (strncmp("OMX.alsa.", component_name.c_str(), 9) == 0)
+      omx_err = OMXALSA_GetHandle(&m_handle, (char*) component_name.c_str(), this, &m_callbacks);
+    else
+#endif
     omx_err = m_DllOMX->OMX_GetHandle(&m_handle, (char*)component_name.c_str(), this, &m_callbacks);
     if (!m_handle || omx_err != OMX_ErrorNone)
     {
@@ -1505,6 +1511,11 @@ bool COMXCoreComponent::Deinitialize()
 
     CLog::Log(LOGDEBUG, "COMXCoreComponent::Deinitialize : %s handle %p\n",
         m_componentName.c_str(), m_handle);
+#ifdef TARGET_LINUX
+    if (strncmp("OMX.alsa.", m_componentName.c_str(), 9) == 0)
+      omx_err = OMXALSA_FreeHandle(m_handle);
+    else
+#endif
     omx_err = m_DllOMX->OMX_FreeHandle(m_handle);
     if (omx_err != OMX_ErrorNone)
     {

README.md

@@ -55,7 +55,7 @@ Usage: omxplayer [OPTIONS] [FILE]
     -v  --version               Print version info
     -k  --keys                  Print key bindings
     -n  --aidx  index           Audio stream index    : e.g. 1
-    -o  --adev  device          Audio out device      : e.g. hdmi/local/both
+    -o  --adev  device          Audio out device      : e.g. hdmi/local/both/alsa[:device]
     -i  --info                  Dump stream format and exit
     -I  --with-info             dump stream format before playback
     -s  --stats                 Pts and buffer stats