HandBrake 0.7.0

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@16 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 154 insertions, 0 deletions

diff --git a/libhb/enclame.c b/libhb/enclame.c
new file mode 100644
index 000000000..19014ac26
--- /dev/null
+++ b/libhb/enclame.c
@@ -0,0 +1,154 @@
+/* $Id: enclame.c,v 1.9 2005/03/05 14:27:05 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 "lame/lame.h"
+
+struct hb_work_object_s
+{
+    HB_WORK_COMMON;
+
+    hb_job_t   * job;
+    hb_audio_t * audio;
+
+    /* LAME handle */
+    lame_global_flags * lame;
+
+    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_enclame_init
+ ***********************************************************************
+ *
+ **********************************************************************/
+hb_work_object_t * hb_work_enclame_init( hb_job_t * job, hb_audio_t * audio )
+{
+    hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
+    w->name  = strdup( "MP3 encoder (libmp3lame)" );
+    w->work  = Work;
+    w->close = Close;
+
+    w->job   = job;
+    w->audio = audio;
+
+    hb_log( "enclame: opening libmp3lame" );
+
+    w->lame = lame_init();
+    lame_set_brate( w->lame, job->abitrate );
+    lame_set_in_samplerate( w->lame, job->arate );
+    lame_set_out_samplerate( w->lame, job->arate );
+    lame_init_params( w->lame );
+    
+    w->input_samples = 1152 * 2;
+    w->output_bytes = LAME_MAXMP3BUFFER;
+    w->buf  = malloc( w->input_samples * sizeof( float ) );
+
+    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;
+    free( w->name );
+    free( w );
+    *_w = NULL;
+}
+
+/***********************************************************************
+ * Encode
+ ***********************************************************************
+ *
+ **********************************************************************/
+static hb_buffer_t * Encode( hb_work_object_t * w )
+{
+    hb_buffer_t * buf;
+    int16_t samples_s16[1152 * 2];
+    uint64_t pts;
+    int      pos, i;
+
+    if( hb_list_bytes( w->list ) < w->input_samples * sizeof( float ) )
+    {
+        return NULL;
+    }
+
+    hb_list_getbytes( w->list, w->buf, w->input_samples * sizeof( float ),
+                      &pts, &pos);
+
+    for( i = 0; i < 1152 * 2; i++ )
+    {
+        samples_s16[i] = ((float*) w->buf)[i];
+    }
+
+    buf        = hb_buffer_init( w->output_bytes );
+    buf->start = pts + 90000 * pos / 2 / sizeof( float ) / w->job->arate;
+    buf->stop  = buf->start + 90000 * 1152 / w->job->arate;
+    buf->size  = lame_encode_buffer_interleaved( w->lame, samples_s16,
+            1152, buf->data, LAME_MAXMP3BUFFER );
+    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( "enclame: lame_encode_buffer 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;
+}
+