HandBrake 0.7.0

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

1 files changed, 167 insertions, 0 deletions

diff --git a/libhb/render.c b/libhb/render.c
new file mode 100644
index 000000000..914fa3995
--- /dev/null
+++ b/libhb/render.c
@@ -0,0 +1,167 @@
+/* $Id: render.c,v 1.17 2005/04/14 17:37:54 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;
+
+    ImgReSampleContext * context;
+    AVPicture            pic_raw;
+    AVPicture            pic_deint;
+    AVPicture            pic_render;
+    hb_buffer_t        * buf_deint;
+};
+
+static void ApplySub( hb_job_t * job, hb_buffer_t * buf,
+                      hb_buffer_t ** _sub )
+{
+    hb_buffer_t * sub = *_sub;
+    hb_title_t * title = job->title;
+    int i, j, offset_top, offset_left;
+    uint8_t * lum, * alpha, * out;
+
+    if( !sub )
+    {
+        return;
+    }
+
+    if( sub->width > title->width - job->crop[0] - job->crop[1] - 40 ||
+        sub->height > title->height - job->crop[2] - job->crop[3] - 40 )
+    {
+        /* The subtitle won't fit */
+        hb_buffer_close( _sub );
+        return;
+    }
+
+    /* If necessary, move the subtitle so it is 20 pixels far from each
+       border of the cropped picture */
+    offset_top = sub->y;
+    offset_top = MAX( offset_top, job->crop[0] + 20 );
+    offset_top = MIN( offset_top,
+            title->height - job->crop[1] - 20 - sub->height );
+    offset_left = sub->x;
+    offset_left = MAX( offset_left, job->crop[2] + 20 );
+    offset_left = MIN( offset_left,
+            title->width - job->crop[3] - 20 - sub->width );
+
+    lum   = sub->data;
+    alpha = lum + sub->width * sub->height;
+    out   = buf->data + offset_top * title->width + offset_left;
+
+    for( i = 0; i < sub->height; i++ )
+    {
+        for( j = 0; j < sub->width; j++ )
+        {
+            out[j] = ( (uint16_t) out[j] * ( 16 - (uint16_t) alpha[j] ) +
+                       (uint16_t) lum[j] * (uint16_t) alpha[j] ) >> 4;
+        }
+        lum   += sub->width;
+        alpha += sub->width;
+        out   += title->width;
+    }
+
+    hb_buffer_close( _sub );
+}
+
+static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
+                 hb_buffer_t ** buf_out )
+{
+    hb_job_t   * job   = w->job;
+    hb_title_t * title = job->title;
+    hb_buffer_t * in = *buf_in, * buf;
+
+    avpicture_fill( &w->pic_raw, in->data, PIX_FMT_YUV420P,
+                    title->width, title->height );
+
+    buf        = hb_buffer_init( 3 * job->width * job->height / 2 );
+    buf->start = in->start;
+    buf->stop  = in->stop;
+
+    if( job->deinterlace && w->context )
+    {
+        avpicture_fill( &w->pic_render, buf->data, PIX_FMT_YUV420P,
+                        job->width, job->height );
+        avpicture_deinterlace( &w->pic_deint, &w->pic_raw,
+                               PIX_FMT_YUV420P, title->width,
+                               title->height );
+        ApplySub( job, w->buf_deint, &in->sub );
+        img_resample( w->context, &w->pic_render, &w->pic_deint );
+    }
+    else if( job->deinterlace )
+    {
+        avpicture_fill( &w->pic_deint, buf->data, PIX_FMT_YUV420P,
+                        job->width, job->height );
+        avpicture_deinterlace( &w->pic_deint, &w->pic_raw,
+                               PIX_FMT_YUV420P, title->width,
+                               title->height );
+        ApplySub( job, buf, &in->sub );
+    }
+    else if( w->context )
+    {
+        ApplySub( job, in, &in->sub );
+        avpicture_fill( &w->pic_render, buf->data, PIX_FMT_YUV420P,
+                        job->width, job->height );
+        img_resample( w->context, &w->pic_render, &w->pic_raw );
+    }
+    else
+    {
+        hb_buffer_close( &buf );
+        ApplySub( job, in, &in->sub );
+        buf      = in;
+        *buf_in  = NULL;
+    }
+
+    (*buf_out) = buf;
+
+    return HB_WORK_OK;
+}
+
+static void Close( hb_work_object_t ** _w )
+{
+    hb_work_object_t * w = *_w;
+    free( w->name );
+    free( w );
+    *_w = NULL;
+}
+
+hb_work_object_t * hb_work_render_init( hb_job_t * job )
+{
+    hb_title_t * title;
+    
+    hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
+    w->name  = strdup( "Renderer" );
+    w->work  = Work;
+    w->close = Close;
+
+    title = job->title;
+
+    w->job = job;
+
+    if( job->crop[0] || job->crop[1] || job->crop[2] || job->crop[3] ||
+        job->width != title->width || job->height != title->height )
+    {
+        w->context = img_resample_full_init(
+            job->width, job->height, title->width, title->height,
+            job->crop[0], job->crop[1], job->crop[2], job->crop[3],
+            0, 0, 0, 0 );
+    }
+
+    if( job->deinterlace )
+    {
+        /* Allocate a constant buffer used for deinterlacing */
+        w->buf_deint = hb_buffer_init( 3 * title->width *
+                                       title->height / 2 );
+        avpicture_fill( &w->pic_deint, w->buf_deint->data,
+                        PIX_FMT_YUV420P, title->width, title->height );
+    }
+    return w;
+}