ansi: erase screen on first frame

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

diff --git a/libavcodec/ansi.c b/libavcodec/ansi.c
index 6afd17c..3572500 100644 (file)
--- a/libavcodec/ansi.c
+++ b/libavcodec/ansi.c
@@ -58,6 +58,7 @@ typedef struct {
     int attributes;       /**< attribute flags */
     int fg;               /**< foreground color */
     int bg;               /**< background color */
     int attributes;       /**< attribute flags */
     int fg;               /**< foreground color */
     int bg;               /**< background color */

+    int first_frame;

 
     /* ansi parser state machine */
     enum {
 
     /* ansi parser state machine */
     enum {


@@ -353,6 +354,10 @@ static int decode_frame(AVCodecContext *avctx,
     s->frame.pict_type           = AV_PICTURE_TYPE_I;
     s->frame.palette_has_changed = 1;
     set_palette((uint32_t *)s->frame.data[1]);
     s->frame.pict_type           = AV_PICTURE_TYPE_I;
     s->frame.palette_has_changed = 1;
     set_palette((uint32_t *)s->frame.data[1]);

+    if (!s->first_frame) {
+        erase_screen(avctx);
+        s->first_frame = 1;
+    }

 
     while(buf < buf_end) {
         switch(s->state) {
 
     while(buf < buf_end) {
         switch(s->state) {

diff --git a/tests/ref/fate/ansi b/tests/ref/fate/ansi
index 6000105..78e853f 100644 (file)
--- a/tests/ref/fate/ansi
+++ b/tests/ref/fate/ansi
@@ -1,7 +1,7 @@
 #tb 0: 1/25
 #tb 0: 1/25

-0,          0,          0,        1,   768000, 0xc4865718
-0,          1,          1,        1,   768000, 0x2c7de258
-0,          2,          2,        1,   768000, 0x0d6b8dc6
+0,          0,          0,        1,   768000, 0x772dd3d0
+0,          1,          1,        1,   768000, 0xd7dab1d1
+0,          2,          2,        1,   768000, 0x0e56f2d3

 0,          3,          3,        1,   768000, 0x11c1fb8e
 0,          4,          4,        1,   768000, 0x72d12da9
 0,          5,          5,        1,   768000, 0x39c7a70d
 0,          3,          3,        1,   768000, 0x11c1fb8e
 0,          4,          4,        1,   768000, 0x72d12da9
 0,          5,          5,        1,   768000, 0x39c7a70d