Add OpenMAX IL Video/Audio decoder.

This decoder will try to use OpenMAX IL components to decode video/audio.
Only 2 OpenMAX cores are currently looked for. The TI OMAP IL core (used for
instance on the N900) and the Bellagio IL core.
This decoder is disabled by default (use --enable-omxil) and for now has
a zero priority (use --codec omxil).

configure.ac

@@ -2586,6 +2586,16 @@ then
   VLC_ADD_PLUGIN([shine])
 fi
 
+dnl
+dnl openmax il codec plugin
+dnl
+AC_ARG_ENABLE(omxil,
+  [  --enable-omxil          openmax il codec module (default disabled)])
+if test "${enable_omxil}" = "yes"
+then
+  VLC_ADD_PLUGIN([omxil])
+fi
+
 dnl
 dnl  mad plugin
 dnl
@@ -4848,6 +4858,7 @@ AC_CONFIG_FILES([
   modules/codec/Makefile
   modules/codec/avcodec/Makefile
   modules/codec/dmo/Makefile
+  modules/codec/omxil/Makefile
   modules/codec/shine/Makefile
   modules/codec/subtitles/Makefile
   modules/codec/spudec/Makefile

modules/codec/Modules.am

-SUBDIRS = dmo avcodec shine subtitles spudec wmafixed
+SUBDIRS = dmo avcodec shine subtitles spudec wmafixed omxil
 SOURCES_a52 = a52.c a52.h
 SOURCES_dts = dts.c
 SOURCES_flac = flac.c

modules/codec/omxil/Modules.am

+SOURCES_omxil = omxil.c utils.c omxil.h omxil_utils.h \
+	OMX_Component.h OMX_Core.h OMX_Image.h OMX_IVCommon.h OMX_Types.h \
+        OMX_Audio.h OMX_ContentPipe.h OMX_Index.h OMX_Other.h OMX_Video.h

modules/codec/omxil/omxil.h

+/*****************************************************************************
+ * omxil_utils.h: helper functions
+ *****************************************************************************
+ * Copyright (C) 2010 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Gildas Bazin <gbazin@videolan.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Includes
+ *****************************************************************************/
+#include "OMX_Core.h"
+#include "OMX_Index.h"
+#include "OMX_Component.h"
+#include "OMX_Video.h"
+
+#include "omxil_utils.h"
+
+/*****************************************************************************
+ * defines
+ *****************************************************************************/
+#define MAX_COMPONENTS_LIST_SIZE 32
+
+/*****************************************************************************
+ * decoder_sys_t : omxil decoder descriptor
+ *****************************************************************************/
+typedef struct OmxPort
+{
+    bool b_valid;
+    OMX_U32 i_port_index;
+    OMX_HANDLETYPE omx_handle;
+    OMX_PARAM_PORTDEFINITIONTYPE definition;
+    es_format_t *p_fmt;
+
+    unsigned int i_frame_size;
+    unsigned int i_frame_stride;
+    unsigned int i_frame_stride_chroma_div;
+
+    unsigned int i_buffers;
+    OMX_BUFFERHEADERTYPE **pp_buffers;
+
+    struct fifo_t
+    {
+      vlc_mutex_t         lock;
+      vlc_cond_t          wait;
+
+      OMX_BUFFERHEADERTYPE *p_first;
+      OMX_BUFFERHEADERTYPE **pp_last;
+
+      int offset;
+
+    } fifo;
+
+    OmxFormatParam format_param;
+
+    OMX_BOOL b_reconfigure;
+    OMX_BOOL b_direct;
+    OMX_BOOL b_flushed;
+
+} OmxPort;
+
+struct decoder_sys_t
+{
+    void *dll_handle;
+    OMX_HANDLETYPE omx_handle;
+
+    OMX_ERRORTYPE (*pf_init) (void);
+    OMX_ERRORTYPE (*pf_deinit) (void);
+    OMX_ERRORTYPE (*pf_get_handle) (OMX_HANDLETYPE *, OMX_STRING,
+                                    OMX_PTR, OMX_CALLBACKTYPE *);
+    OMX_ERRORTYPE (*pf_free_handle) (OMX_HANDLETYPE);
+    OMX_ERRORTYPE (*pf_component_enum)(OMX_STRING, OMX_U32, OMX_U32);
+    OMX_ERRORTYPE (*pf_get_roles_of_component)(OMX_STRING, OMX_U32 *, OMX_U8 **);
+
+    bool b_enc;
+    bool b_init;
+    vlc_mutex_t lock;
+
+    char ppsz_components[MAX_COMPONENTS_LIST_SIZE][OMX_MAX_STRINGNAME_SIZE];
+    unsigned int components;
+
+    struct OmxEvent *p_events;
+    struct OmxEvent **pp_last_event;
+
+    vlc_mutex_t mutex;
+    vlc_cond_t cond;
+
+    OmxPort *p_ports;
+    unsigned int ports;
+    OmxPort in;
+    OmxPort out;
+
+    bool b_error;
+
+    date_t end_date;
+};