HandBrake 0.7.0

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

1 files changed, 205 insertions, 0 deletions

diff --git a/libhb/encvorbis.c b/libhb/encvorbis.c
new file mode 100644
index 000000000..86b824372
--- /dev/null
+++ b/libhb/encvorbis.c
@@ -0,0 +1,205 @@
+/* $Id: encvorbis.c,v 1.6 2005/03/05 15:08:32 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 "vorbis/vorbisenc.h"
+
+#define OGGVORBIS_FRAME_SIZE 1024
+
+struct hb_work_object_s
+{
+    HB_WORK_COMMON;
+
+    hb_job_t   * job;
+    hb_audio_t * audio;
+
+    vorbis_info        vi;
+    vorbis_comment     vc;
+    vorbis_dsp_state   vd;
+    vorbis_block       vb;
+
+    unsigned long   input_samples;
+    uint8_t       * buf;
+    uint64_t        pts;
+
+    hb_list_t     * list;
+};
+
+/***********************************************************************
+ * 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_encvorbis_init
+ ***********************************************************************
+ *
+ **********************************************************************/
+hb_work_object_t * hb_work_encvorbis_init( hb_job_t * job, hb_audio_t * audio )
+{
+    int i;
+    ogg_packet header[3];
+
+    hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
+    w->name  = strdup( "Vorbis encoder (libvorbis)" );
+    w->work  = Work;
+    w->close = Close;
+
+    w->job   = job;
+    w->audio = audio;
+
+    hb_log( "encvorbis: opening libvorbis" );
+
+    /* init */
+    vorbis_info_init( &w->vi );
+    if( vorbis_encode_setup_managed( &w->vi, 2,
+          job->arate, -1, 1000 * job->abitrate, -1 ) ||
+        vorbis_encode_ctl( &w->vi, OV_ECTL_RATEMANAGE_AVG, NULL ) ||
+          vorbis_encode_setup_init( &w->vi ) )
+    {
+        hb_log( "encvorbis: vorbis_encode_setup_managed failed" );
+    }
+
+    /* add a comment */
+    vorbis_comment_init( &w->vc );
+    vorbis_comment_add_tag( &w->vc, "Encoder", "HandBrake");
+
+    /* set up the analysis state and auxiliary encoding storage */
+    vorbis_analysis_init( &w->vd, &w->vi);
+    vorbis_block_init( &w->vd, &w->vb);
+
+    /* get the 3 headers */
+    vorbis_analysis_headerout( &w->vd, &w->vc,
+                               &header[0], &header[1], &header[2] );
+    for( i = 0; i < 3; i++ )
+    {
+        audio->config.vorbis.headers[i] =
+            malloc( sizeof( ogg_packet ) + header[i].bytes );
+        memcpy( audio->config.vorbis.headers[i], &header[i],
+                sizeof( ogg_packet ) );
+        memcpy( audio->config.vorbis.headers[i] + sizeof( ogg_packet ),
+                header[i].packet, header[i].bytes );
+    }
+
+    w->input_samples = 2 * OGGVORBIS_FRAME_SIZE;
+    w->buf = malloc( w->input_samples * sizeof( float ) );
+
+    w->list = hb_list_init();
+
+    return w;
+}
+
+/***********************************************************************
+ * Close
+ ***********************************************************************
+ *
+ **********************************************************************/
+static void Close( hb_work_object_t ** _w )
+{
+    hb_work_object_t * w = *_w;
+    free( w->name );
+    free( w );
+    *_w = NULL;
+}
+
+/***********************************************************************
+ * Flush
+ ***********************************************************************
+ *
+ **********************************************************************/
+static hb_buffer_t * Flush( hb_work_object_t * w )
+{
+    hb_buffer_t * buf;
+
+    if( vorbis_analysis_blockout( &w->vd, &w->vb ) == 1 )
+    {
+        ogg_packet op;
+
+        vorbis_analysis( &w->vb, NULL );
+        vorbis_bitrate_addblock( &w->vb );
+
+        if( vorbis_bitrate_flushpacket( &w->vd, &op ) )
+        {
+            buf = hb_buffer_init( sizeof( ogg_packet ) + op.bytes );
+            memcpy( buf->data, &op, sizeof( ogg_packet ) );
+            memcpy( buf->data + sizeof( ogg_packet ), op.packet,
+                    op.bytes );
+            buf->key   = 1;
+            buf->start = w->pts; /* No exact, but who cares - the OGM
+                                    muxer doesn't use it */
+            buf->stop  = buf->start +
+                90000 * OGGVORBIS_FRAME_SIZE + w->job->arate;
+
+            return buf;
+        }
+    }
+
+    return NULL;
+}
+
+/***********************************************************************
+ * Encode
+ ***********************************************************************
+ *
+ **********************************************************************/
+static hb_buffer_t * Encode( hb_work_object_t * w )
+{
+    hb_buffer_t * buf;
+    float ** buffer;
+    int i;
+
+    /* Try to extract more data */
+    if( ( buf = Flush( w ) ) )
+    {
+        return buf;
+    }
+
+    if( hb_list_bytes( w->list ) < w->input_samples * sizeof( float ) )
+    {
+        return NULL;
+    }
+
+    /* Process more samples */
+    hb_list_getbytes( w->list, w->buf, w->input_samples * sizeof( float ),
+                      &w->pts, NULL );
+    buffer = vorbis_analysis_buffer( &w->vd, OGGVORBIS_FRAME_SIZE );
+    for( i = 0; i < OGGVORBIS_FRAME_SIZE; i++ )
+    {
+        buffer[0][i] = ((float *) w->buf)[2*i]   / 32768.f;
+        buffer[1][i] = ((float *) w->buf)[2*i+1] / 32768.f;
+    }
+    vorbis_analysis_wrote( &w->vd, OGGVORBIS_FRAME_SIZE );
+
+    /* Try to extract again */
+    return Flush( w );
+}
+
+/***********************************************************************
+ * 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;
+}