* mp4 : improve mp4a detection/handling.

plugins/mp4/mp4.c

@@ -2,7 +2,7 @@
  * mp4.c : MP4 file input module for vlc
  *****************************************************************************
  * Copyright (C) 2001 VideoLAN
- * $Id: mp4.c,v 1.3 2002/07/21 19:57:22 fenrir Exp $
+ * $Id: mp4.c,v 1.4 2002/07/21 21:18:15 fenrir Exp $
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  * 
  * This program is free software; you can redistribute it and/or modify
@@ -406,11 +406,14 @@ static void MP4End( input_thread_t *p_input )
                FREE(p_demux->track[i_track].chunk[i_chunk].p_sample_delta_dts );
             }
         }
-        if( p_demux->track->p_data_init )
+#if 0
+/*        if( p_demux->track->p_data_init )
         {
             input_DeletePacket( p_input->p_method_data, 
                                 p_demux->track->p_data_init );
         }
+        */
+#endif 
         if( !p_demux->track[i_track].i_sample_size )
         {
             FREE( p_demux->track[i_track].p_sample_size );
@@ -819,48 +822,11 @@ static void MP4_StartDecoder( input_thread_t *p_input,
     else
     {
         p_demux_track->p_es->i_type = i_codec;
-        msg_Info( p_input, "%s supported", psz_name );
+        msg_Info( p_input, "%s supported(or a subpart)", psz_name );
     }
 
-    switch( p_demux_track->i_cat )
-    {
-        case( VIDEO_ES ):    
-            p_demux_track->p_es->b_audio = 0;
-
-            /* now create a bitmapinfoheader_t for decoder */
-            p_bmih = malloc( 40 );
-            memset( p_bmih, 0, 40);
-            MP4_Set4BytesLE( p_bmih, 40 );
-            if( p_sample->data.p_sample_mp4v->i_width )
-            {
-                MP4_Set4BytesLE( p_bmih + 4, 
-                                 p_sample->data.p_sample_mp4v->i_width );
-            }
-            else
-            {
-                /* use display size */
-                MP4_Set4BytesLE( p_bmih + 4, p_demux_track->i_width );
-            }
-            if( p_sample->data.p_sample_mp4v->i_height )
-            {
-                MP4_Set4BytesLE( p_bmih + 8, 
-                                 p_sample->data.p_sample_mp4v->i_height );
-            }
-            else
-            {
-                MP4_Set4BytesLE( p_bmih + 8, p_demux_track->i_height );
-            }
-
-            p_demux_track->p_es->p_demux_data = p_bmih;
-            break;
-        case( AUDIO_ES ):
-            p_demux_track->p_es->b_audio = 1;
-            break;
-        default:
-            break;
-    }
 
-    /* now see if esds is present and i so create a data packet 
+    /* now see if esds is present and if so create a data packet 
         with decoder_specific_info  */
     if( ( p_esds = MP4_FindBox( p_sample, FOURCC_esds ) )&&
         ( p_esds->data.p_esds->es_descriptor.p_decConfigDescr ) )
@@ -883,10 +849,14 @@ static void MP4_StartDecoder( input_thread_t *p_input,
             case( 0x65):
                 p_demux_track->p_es->i_type = MPEG2_VIDEO_ES;
                 break;
-            case( 0x66):
-            case( 0x67):
-            case( 0x68):
-            case( 0x69):
+            /* Theses are MPEG2-AAC */
+            case( 0x66): /* main profile */
+            case( 0x67): /* Low complexity profile */
+            case( 0x68): /* Scaleable Sampling rate profile */
+                p_demux_track->p_es->i_type = UNKNOWN_ES; 
+                break;
+            /* true MPEG 2 audio */
+            case( 0x69): 
                 p_demux_track->p_es->i_type = MPEG2_AUDIO_ES;
                 break;
             case( 0x6a):
@@ -895,15 +865,19 @@ static void MP4_StartDecoder( input_thread_t *p_input,
             case( 0x6b):
                 p_demux_track->p_es->i_type = MPEG1_AUDIO_ES;
                 break;
-
+            case( 0x6c ):
+                p_demux_track->p_es->i_type = UNKNOWN_ES; /* in fact jpeg */
+                break;
             default:
                 /* Unknown entry, don't touch i_type */
                 msg_Warn( p_input, "objectTypeIndication(0x%x) unknow",
                       es_descriptor.p_decConfigDescr->i_objectTypeIndication );
                 break;
         }
+
         /* Create a packet to init the decoder, send with the first frame */
-        if( es_descriptor.p_decConfigDescr->i_decoder_specific_info_len )
+        if( ( es_descriptor.p_decConfigDescr->i_decoder_specific_info_len )&&
+            ( p_demux_track->p_es->i_type != UNKNOWN_ES ) )
         {
             data_packet_t *p_data;
             int i_size = 
@@ -926,12 +900,58 @@ static void MP4_StartDecoder( input_thread_t *p_input,
 #undef es_descriptor
     }
 
+    if( p_demux_track->p_es->i_type == UNKNOWN_ES )
+    {
+        msg_Warn( p_input, "SampleEntry in fact not supported" );
+        p_demux_track->b_ok = 0;
+        return;
+    }
+
+    /* some last initialisation */
+    switch( p_demux_track->i_cat )
+    {
+        case( VIDEO_ES ):    
+            p_demux_track->p_es->b_audio = 0;
+
+            /* now create a bitmapinfoheader_t for decoder */
+            p_bmih = malloc( 40 );
+            memset( p_bmih, 0, 40);
+            MP4_Set4BytesLE( p_bmih, 40 );
+            if( p_sample->data.p_sample_mp4v->i_width )
+            {
+                MP4_Set4BytesLE( p_bmih + 4, 
+                                 p_sample->data.p_sample_mp4v->i_width );
+            }
+            else
+            {
+                /* use display size */
+                MP4_Set4BytesLE( p_bmih + 4, p_demux_track->i_width );
+            }
+            if( p_sample->data.p_sample_mp4v->i_height )
+            {
+                MP4_Set4BytesLE( p_bmih + 8, 
+                                 p_sample->data.p_sample_mp4v->i_height );
+            }
+            else
+            {
+                MP4_Set4BytesLE( p_bmih + 8, p_demux_track->i_height );
+            }
+
+            p_demux_track->p_es->p_demux_data = p_bmih;
+            break;
+        case( AUDIO_ES ):
+            p_demux_track->p_es->b_audio = 1;
+            break;
+        default:
+            break;
+    }
+
+
     vlc_mutex_lock( &p_input->stream.stream_lock );
     input_SelectES( p_input, p_demux_track->p_es );
     vlc_mutex_unlock( &p_input->stream.stream_lock );
-   
+
     p_demux_track->b_ok = 1;
-    return;
 }