Use forced key frames when encoding with libxvid.
[ffmpeg.git] / libavcodec / libschroedinger.c
index 8c80c96..04c15a2 100644 (file)
@@ -19,7 +19,7 @@
  */
 
 /**
-* @file libschroedinger.c
+* @file
 * function definitions common to libschroedingerdec.c and libschroedingerenc.c
 */
 
@@ -57,8 +57,8 @@ SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext
 
     unsigned int idx = ff_dirac_schro_get_video_format_idx (avccontext);
 
-    return (idx < num_formats) ?
-                 ff_schro_video_formats[idx] : SCHRO_VIDEO_FORMAT_CUSTOM;
+    return (idx < num_formats) ? ff_schro_video_formats[idx] :
+                                 SCHRO_VIDEO_FORMAT_CUSTOM;
 }
 
 int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
@@ -71,10 +71,62 @@ int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
 
     for (idx = 0; idx < num_formats; ++idx) {
         if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
-            *schro_frame_fmt =
-                         ffmpeg_schro_pixel_format_map[idx].schro_frame_fmt;
+            *schro_frame_fmt = ffmpeg_schro_pixel_format_map[idx].schro_frame_fmt;
             return 0;
         }
     }
     return -1;
 }
+
+static void FreeSchroFrame(SchroFrame *frame, void *priv)
+{
+    AVPicture *p_pic = priv;
+
+    if (!p_pic)
+        return;
+
+    avpicture_free(p_pic);
+    av_freep(&p_pic);
+}
+
+SchroFrame *ff_create_schro_frame(AVCodecContext *avccontext,
+                                  SchroFrameFormat schro_frame_fmt)
+{
+    AVPicture *p_pic;
+    SchroFrame *p_frame;
+    int y_width, uv_width;
+    int y_height, uv_height;
+    int i;
+
+    y_width   = avccontext->width;
+    y_height  = avccontext->height;
+    uv_width  = y_width  >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
+    uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
+
+    p_pic = av_mallocz(sizeof(AVPicture));
+    avpicture_alloc(p_pic, avccontext->pix_fmt, y_width, y_height);
+
+    p_frame         = schro_frame_new();
+    p_frame->format = schro_frame_fmt;
+    p_frame->width  = y_width;
+    p_frame->height = y_height;
+    schro_frame_set_free_callback(p_frame, FreeSchroFrame, (void *)p_pic);
+
+    for (i = 0; i < 3; ++i) {
+        p_frame->components[i].width  = i ? uv_width : y_width;
+        p_frame->components[i].stride = p_pic->linesize[i];
+        p_frame->components[i].height = i ? uv_height : y_height;
+        p_frame->components[i].length =
+                 p_frame->components[i].stride * p_frame->components[i].height;
+        p_frame->components[i].data   = p_pic->data[i];
+
+        if (i) {
+            p_frame->components[i].v_shift =
+                SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
+            p_frame->components[i].h_shift =
+                SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);
+        }
+    }
+
+    return p_frame;
+}