HandBrake 0.7.0

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

1 files changed, 201 insertions, 0 deletions

diff --git a/libhb/encavcodec.c b/libhb/encavcodec.c
new file mode 100644
index 000000000..deff7c527
--- /dev/null
+++ b/libhb/encavcodec.c
@@ -0,0 +1,201 @@
+/* $Id: encavcodec.c,v 1.23 2005/10/13 23:47:06 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 "ffmpeg/avcodec.h"
+
+struct hb_work_object_s
+{
+    HB_WORK_COMMON;
+
+    hb_job_t * job;
+    AVCodecContext * context;
+    FILE * file;
+};
+
+/***********************************************************************
+ * 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_encavcodec_init
+ ***********************************************************************
+ *
+ **********************************************************************/
+hb_work_object_t * hb_work_encavcodec_init( hb_job_t * job )
+{
+    AVCodec * codec;
+    AVCodecContext * context;
+    
+    hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
+    w->name  = strdup( "MPEG-4 encoder (libavcodec)" );
+    w->work  = Work;
+    w->close = Close;
+
+    w->job = job;
+
+    codec = avcodec_find_encoder( CODEC_ID_MPEG4 );
+    if( !codec )
+    {
+        hb_log( "hb_work_encavcodec_init: avcodec_find_encoder "
+                "failed" );
+    }
+    context = avcodec_alloc_context();
+    if( job->vquality < 0.0 || job->vquality > 1.0 )
+    {
+        /* Rate control */
+        context->bit_rate = 1000 * job->vbitrate;
+        context->bit_rate_tolerance = 10 * context->bit_rate;
+    }
+    else
+    {
+        /* Constant quantizer */
+        context->qmin = 31 - job->vquality * 30;
+        context->qmax = context->qmin;
+        hb_log( "encavcodec: encoding at constant quantizer %d",
+                context->qmin );
+    }
+    context->width     = job->width;
+    context->height    = job->height;
+    context->time_base = (AVRational) { job->vrate_base, job->vrate };
+    context->gop_size  = 10 * job->vrate / job->vrate_base;
+    context->pix_fmt   = PIX_FMT_YUV420P;
+
+    if( job->mux & HB_MUX_MP4 )
+    {
+        context->flags |= CODEC_FLAG_GLOBAL_HEADER;
+    }
+    if( job->grayscale )
+    {
+        context->flags |= CODEC_FLAG_GRAY;
+    }
+
+    if( job->pass )
+    {
+        char filename[1024]; memset( filename, 0, 1024 );
+        hb_get_tempory_filename( job->h, filename, "ffmpeg.log" );
+
+        if( job->pass == 1 )
+        {
+            w->file = fopen( filename, "wb" );
+            context->flags |= CODEC_FLAG_PASS1;
+        }
+        else
+        {
+            int    size;
+            char * log;
+
+            w->file = fopen( filename, "rb" );
+            fseek( w->file, 0, SEEK_END );
+            size = ftell( w->file );
+            fseek( w->file, 0, SEEK_SET );
+            log = malloc( size + 1 );
+            log[size] = '\0';
+            fread( log, size, 1, w->file );
+            fclose( w->file );
+            w->file = NULL;
+
+            context->flags    |= CODEC_FLAG_PASS2;
+            context->stats_in  = log;
+        }
+    }
+
+    if( avcodec_open( context, codec ) )
+    {
+        hb_log( "hb_work_encavcodec_init: avcodec_open failed" );
+    }
+    w->context = context;
+
+    if( ( job->mux & HB_MUX_MP4 ) && job->pass != 1 )
+    {
+#define c job->config.mpeg4
+        /* Hem hem */
+        c.config        = malloc( 15 );
+        c.config_length = 15;
+        memcpy( c.config, context->extradata + 15, 15 );
+#undef c
+    }
+    
+    return w;
+}
+
+/***********************************************************************
+ * Close
+ ***********************************************************************
+ *
+ **********************************************************************/
+static void Close( hb_work_object_t ** _w )
+{
+    hb_work_object_t * w = *_w;
+    hb_job_t * job = w->job;
+
+    if( w->context )
+    {
+        hb_log( "encavcodec: closing libavcodec" );
+        avcodec_close( w->context );
+    }
+    if( w->file )
+    {
+        fclose( w->file );
+    }
+    if( job->es_config )
+    {
+        free( job->es_config );
+        job->es_config = NULL;
+        job->es_config_length = 0;
+    }
+
+    free( w->name );
+    free( w );
+    *_w = NULL;
+}
+
+/***********************************************************************
+ * Work
+ ***********************************************************************
+ *
+ **********************************************************************/
+static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
+                 hb_buffer_t ** buf_out )
+{
+    hb_job_t * job = w->job;
+    AVFrame  * frame;
+    hb_buffer_t * in = *buf_in, * buf;
+
+    frame              = avcodec_alloc_frame();
+    frame->data[0]     = in->data;
+    frame->data[1]     = frame->data[0] + job->width * job->height;
+    frame->data[2]     = frame->data[1] + job->width * job->height / 4;
+    frame->linesize[0] = job->width;
+    frame->linesize[1] = job->width / 2;
+    frame->linesize[2] = job->width / 2;
+
+    /* Should be way too large */
+    buf = hb_buffer_init( 3 * job->width * job->height / 2 );
+    buf->size = avcodec_encode_video( w->context, buf->data, buf->alloc,
+                                      frame );
+    buf->start = in->start;
+    buf->stop  = in->stop;
+    buf->key   = w->context->coded_frame->key_frame;
+
+    av_free( frame );
+
+    if( job->pass == 1 )
+    {
+        /* Write stats */
+        fprintf( w->file, "%s", w->context->stats_out );
+    }
+
+    *buf_out = buf;
+
+    return HB_WORK_OK;
+}
+
+