Fixed decoder init when libdca is not present + clean up.

modules/codec/dts.c

@@ -35,7 +35,23 @@
 #include <vlc_aout.h>
 #include <vlc_block_helper.h>
 
-#define DTS_HEADER_SIZE 14
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int  OpenDecoder   ( vlc_object_t * );
+static int  OpenPacketizer( vlc_object_t * );
+static void CloseCommon   ( vlc_object_t * );
+
+vlc_module_begin ()
+    set_description( N_("DTS parser") )
+    set_capability( "decoder", 100 )
+    set_callbacks( OpenDecoder, CloseCommon )
+
+    add_submodule ()
+    set_description( N_("DTS audio packetizer") )
+    set_capability( "packetizer", 10 )
+    set_callbacks( OpenPacketizer, CloseCommon )
+vlc_module_end ()
 
 /*****************************************************************************
  * decoder_sys_t : decoder descriptor
@@ -77,16 +93,16 @@ enum {
     STATE_SEND_DATA
 };
 
+#define DTS_HEADER_SIZE 14
+
 /****************************************************************************
  * Local prototypes
  ****************************************************************************/
-static int  OpenDecoder   ( vlc_object_t * );
-static int  OpenPacketizer( vlc_object_t * );
-static void CloseDecoder  ( vlc_object_t * );
-static void *DecodeBlock  ( decoder_t *, block_t ** );
+static int OpenCommon( vlc_object_t *, bool b_packetizer );
+static void *DecodeBlock( decoder_t *, block_t ** );
 
 static inline int SyncCode( const uint8_t * );
-static int  SyncInfo      ( const uint8_t *, unsigned int *, unsigned int *,
+static int  SyncInfo( const uint8_t *, unsigned int *, unsigned int *,
                       unsigned int *, unsigned int *, unsigned int * );
 
 static uint8_t       *GetOutBuffer ( decoder_t *, void ** );
@@ -94,40 +110,45 @@ static aout_buffer_t *GetAoutBuffer( decoder_t * );
 static block_t       *GetSoutBuffer( decoder_t * );
 
 /*****************************************************************************
- * Module descriptor
+ * OpenDecoder: probe the decoder
  *****************************************************************************/
-vlc_module_begin ()
-    set_description( N_("DTS parser") )
-    set_capability( "decoder", 100 )
-    set_callbacks( OpenDecoder, CloseDecoder )
+static int OpenDecoder( vlc_object_t *p_this )
+{
+    /* HACK: Don't use this codec if we don't have an dts audio filter */
+    if( !module_exists( "dtstofloat32" ) )
+        return VLC_EGENERIC;
 
-    add_submodule ()
-    set_description( N_("DTS audio packetizer") )
-    set_capability( "packetizer", 10 )
-    set_callbacks( OpenPacketizer, CloseDecoder )
-vlc_module_end ()
+    return OpenCommon( p_this, false );
+}
 
 /*****************************************************************************
- * OpenDecoder: probe the decoder and return score
+ * OpenPacketizer: probe the packetizer
  *****************************************************************************/
-static int OpenDecoder( vlc_object_t *p_this )
+static int OpenPacketizer( vlc_object_t *p_this )
+{
+    return OpenCommon( p_this, true );
+}
+
+/*****************************************************************************
+ * OpenCommon:
+ *****************************************************************************/
+static int OpenCommon( vlc_object_t *p_this, bool b_packetizer )
 {
     decoder_t *p_dec = (decoder_t*)p_this;
     decoder_sys_t *p_sys;
 
-    if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s',' ')
-         && p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s','b') )
+    if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s',' ') &&
+        p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s','b') )
     {
         return VLC_EGENERIC;
     }
 
     /* Allocate the memory needed to store the decoder's structure */
-    if( ( p_dec->p_sys = p_sys =
-          (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
+    if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
         return VLC_ENOMEM;
 
     /* Misc init */
-    p_sys->b_packetizer = false;
+    p_sys->b_packetizer = b_packetizer;
     p_sys->i_state = STATE_NOSYNC;
     aout_DateSet( &p_sys->end_date, 0 );
 
@@ -147,21 +168,8 @@ static int OpenDecoder( vlc_object_t *p_this )
     return VLC_SUCCESS;
 }
 
-static int OpenPacketizer( vlc_object_t *p_this )
-{
-    decoder_t *p_dec = (decoder_t*)p_this;
-
-    int i_ret = OpenDecoder( p_this );
-
-    if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = true;
-
-    return i_ret;
-}
-
 /****************************************************************************
  * DecodeBlock: the whole thing
- ****************************************************************************
- * This function is called just after the thread is launched.
  ****************************************************************************/
 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
 {
@@ -170,7 +178,8 @@ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
     uint8_t *p_buf;
     void *p_out_buffer;
 
-    if( !pp_block || !*pp_block ) return NULL;
+    if( !pp_block || !*pp_block )
+        return NULL;
 
     if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
     {
@@ -317,9 +326,9 @@ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
 }
 
 /*****************************************************************************
- * CloseDecoder: clean up the decoder
+ * CloseCommon: clean up the decoder
  *****************************************************************************/
-static void CloseDecoder( vlc_object_t *p_this )
+static void CloseCommon( vlc_object_t *p_this )
 {
     decoder_t *p_dec = (decoder_t*)p_this;
     decoder_sys_t *p_sys = p_dec->p_sys;