From 56bb6ce496b475944bb9577c7586e84be1cb831e Mon Sep 17 00:00:00 2001
From: handbrake <no-reply@handbrake.fr>
Date: Sat, 14 Jan 2006 13:40:38 +0000
Subject: HandBrake 0.7.0

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@16 b64f7644-9d1e-0410-96f1-a4d463321fa5
---
 libhb/encfaac.c | 166 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 libhb/encfaac.c

(limited to 'libhb/encfaac.c')

diff --git a/libhb/encfaac.c b/libhb/encfaac.c
new file mode 100644
index 000000000..a5b704f4c
--- /dev/null
+++ b/libhb/encfaac.c
@@ -0,0 +1,166 @@
+/* $Id: encfaac.c,v 1.13 2005/03/03 17:21:57 titer Exp $
+
+   This file is part of the HandBrake source code.
+   Homepage: <http://handbrake.m0k.org/>.
+   It may be used under the terms of the GNU General Public License. */
+
+#include "hb.h"
+
+#include "faac.h"
+
+struct hb_work_object_s
+{
+    HB_WORK_COMMON;
+
+    hb_job_t   * job;
+    hb_audio_t * audio;
+
+    faacEncHandle * faac;
+    unsigned long   input_samples;
+    unsigned long   output_bytes;
+    uint8_t       * buf;
+
+    hb_list_t     * list;
+    int64_t         pts;
+};
+
+/***********************************************************************
+ * Local prototypes
+ **********************************************************************/
+static void Close( hb_work_object_t ** _w );
+static int  Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
+                  hb_buffer_t ** buf_out );
+
+/***********************************************************************
+ * hb_work_encfaac_init
+ ***********************************************************************
+ *
+ **********************************************************************/
+hb_work_object_t * hb_work_encfaac_init( hb_job_t * job, hb_audio_t * audio )
+{
+    hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
+    faacEncConfigurationPtr cfg;
+    w->name  = strdup( "AAC encoder (libfaac)" );
+    w->work  = Work;
+    w->close = Close;
+
+    w->job   = job;
+    w->audio = audio;
+
+    w->faac = faacEncOpen( job->arate, 2, &w->input_samples,
+                           &w->output_bytes );
+    w->buf  = malloc( w->input_samples * sizeof( float ) );
+    
+    cfg                = faacEncGetCurrentConfiguration( w->faac );
+    cfg->mpegVersion   = MPEG4;
+    cfg->aacObjectType = LOW;
+    cfg->allowMidside  = 1;
+    cfg->useLfe        = 0;
+    cfg->useTns        = 0;
+    cfg->bitRate       = job->abitrate * 500; /* Per channel */
+    cfg->bandWidth     = 0;
+    cfg->outputFormat  = 0;
+    cfg->inputFormat   =  FAAC_INPUT_FLOAT;
+    if( !faacEncSetConfiguration( w->faac, cfg ) )
+    {
+        hb_log( "faacEncSetConfiguration failed" );
+    }
+    if( faacEncGetDecoderSpecificInfo( w->faac, &audio->config.faac.decinfo,
+                                       &audio->config.faac.size ) < 0 )
+    {
+        hb_log( "faacEncGetDecoderSpecificInfo failed" );
+    }
+
+    w->list = hb_list_init();
+    w->pts  = -1;
+
+    return w;
+}
+
+/***********************************************************************
+ * Close
+ ***********************************************************************
+ *
+ **********************************************************************/
+static void Close( hb_work_object_t ** _w )
+{
+    hb_work_object_t * w = *_w;
+
+    faacEncClose( w->faac );
+    free( w->buf );
+    hb_list_empty( &w->list );
+    free( w->audio->config.faac.decinfo );
+
+    free( w->name );
+    free( w );
+    *_w = NULL;
+}
+
+/***********************************************************************
+ * Encode
+ ***********************************************************************
+ *
+ **********************************************************************/
+static hb_buffer_t * Encode( hb_work_object_t * w )
+{
+    hb_buffer_t * buf;
+    uint64_t      pts;
+    int           pos;
+
+    if( hb_list_bytes( w->list ) < w->input_samples * sizeof( float ) )
+    {
+        /* Need more data */
+        return NULL;
+    }
+
+    hb_list_getbytes( w->list, w->buf, w->input_samples * sizeof( float ),
+                      &pts, &pos );
+
+    buf        = hb_buffer_init( w->output_bytes );
+    buf->start = pts + 90000 * pos / 2 / sizeof( float ) / w->job->arate;
+    buf->stop  = buf->start + 90000 * w->input_samples / w->job->arate / 2;
+    buf->size  = faacEncEncode( w->faac, (int32_t *) w->buf,
+            w->input_samples, buf->data, w->output_bytes );
+    buf->key   = 1;
+
+    if( !buf->size )
+    {
+        /* Encoding was successful but we got no data. Try to encode
+           more */
+        hb_buffer_close( &buf );
+        return Encode( w );
+    }
+    else if( buf->size < 0 )
+    {
+        hb_log( "faacEncEncode failed" );
+        hb_buffer_close( &buf );
+        return NULL;
+    }
+
+    return buf;
+}
+
+/***********************************************************************
+ * Work
+ ***********************************************************************
+ *
+ **********************************************************************/
+static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
+                 hb_buffer_t ** buf_out )
+{
+    hb_buffer_t * buf;
+
+    hb_list_add( w->list, *buf_in );
+    *buf_in = NULL;
+
+    *buf_out = buf = Encode( w );
+
+    while( buf )
+    {
+        buf->next = Encode( w );
+        buf       = buf->next;
+    }
+    
+    return HB_WORK_OK;
+}
+
-- 
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