do our own flipping

diff --git a/cap_lavc.c b/cap_lavc.c
index 7c5027a3962e7704619e8bc441327fb9682e21f2..46ac5ecb3b5937f5b6004e7f0e3a9b7fc11c65ac 100644 (file)
--- a/cap_lavc.c
+++ b/cap_lavc.c
@@ -820,6 +820,7 @@ typedef struct capturevideostate_lavc_formatspecific_s
        qint64_t vpts;
        unsigned char *planebuffer;
        unsigned char *buffer;
+       unsigned char *flipbuffer;
        size_t bufsize;
        short *aframe;
        int aframesize;
@@ -832,6 +833,17 @@ typedef struct capturevideostate_lavc_formatspecific_s
 capturevideostate_lavc_formatspecific_t;
 #define LOAD_FORMATSPECIFIC_LAVC() capturevideostate_lavc_formatspecific_t *format = (capturevideostate_lavc_formatspecific_t *) cls.capturevideo.formatspecific
 
+static void flip(void *buf, size_t linewidth, size_t lines, void *flipbuf)
+{
+       int i, j;
+       for(i = 0, j = lines - 1; i < j; ++i, --j)
+       {
+               memcpy(flipbuf, ((char *) buf) + linewidth * i, linewidth);
+               memcpy(((char *) buf) + linewidth * i, ((char *) buf) + linewidth * j, linewidth);
+               memcpy(((char *) buf) + linewidth * j, flipbuf, linewidth);
+       }
+}
+
 static void SCR_CaptureVideo_Lavc_VideoFrames(int num)
 {
        LOAD_FORMATSPECIFIC_LAVC();
@@ -841,34 +853,36 @@ static void SCR_CaptureVideo_Lavc_VideoFrames(int num)
        AVFrame frame;
        int size;
 
-       do
+       if(num > 0)
        {
                qavcodec_get_frame_defaults(&frame);
-               if(num > 0)
+               flip(cls.capturevideo.outbuffer, cls.capturevideo.width * 4, cls.capturevideo.height, format->flipbuffer);
+               if(format->sws)
                {
-                       if(format->sws)
-                       {
-                               int four_w = cls.capturevideo.width * 4;
-                               const quint8_t *outbuffer[1];
-                               outbuffer[0] = cls.capturevideo.outbuffer;
-                               // FIXME these sizes are safe, but calculate the REAL sizes
-                               frame.data[0] = format->planebuffer;
-                               frame.linesize[0] = four_w;
-                               frame.data[1] = format->planebuffer + four_w * cls.capturevideo.height;
-                               frame.linesize[1] = four_w;
-                               frame.data[2] = format->planebuffer + four_w * cls.capturevideo.height * 2;
-                               frame.linesize[2] = four_w;
-                               frame.data[3] = format->planebuffer + four_w * cls.capturevideo.height * 3;
-                               frame.linesize[3] = four_w;
-                               qsws_scale(format->sws, outbuffer, &four_w, 0, cls.capturevideo.height, frame.data, frame.linesize);
-                       }
-                       else
-                       {
-                               frame.data[0] = cls.capturevideo.outbuffer;
-                               frame.linesize[0] = cls.capturevideo.width * 4;
-                       }
-                       frame.pts = format->vpts;
+                       int four_w = cls.capturevideo.width * 4;
+                       const quint8_t *outbuffer[1];
+                       outbuffer[0] = cls.capturevideo.outbuffer;
+                       // FIXME these sizes are safe, but calculate the REAL sizes
+                       frame.data[0] = format->planebuffer;
+                       frame.linesize[0] = four_w;
+                       frame.data[1] = format->planebuffer + four_w * cls.capturevideo.height;
+                       frame.linesize[1] = four_w;
+                       frame.data[2] = format->planebuffer + four_w * cls.capturevideo.height * 2;
+                       frame.linesize[2] = four_w;
+                       frame.data[3] = format->planebuffer + four_w * cls.capturevideo.height * 3;
+                       frame.linesize[3] = four_w;
+                       qsws_scale(format->sws, outbuffer, &four_w, 0, cls.capturevideo.height, frame.data, frame.linesize);
+               }
+               else
+               {
+                       frame.data[0] = cls.capturevideo.outbuffer;
+                       frame.linesize[0] = cls.capturevideo.width * 4;
                }
+               frame.pts = format->vpts;
+       }
+
+       do
+       {
                if(format->avf->oformat->flags & AVFMT_RAWPICTURE)
                {
                        if(num > 0)
@@ -1323,6 +1337,7 @@ void SCR_CaptureVideo_Lavc_BeginVideo(void)
                format->buffer = Z_Malloc(format->bufsize);
                if(format->sws)
                        format->planebuffer = Z_Malloc(cls.capturevideo.width * cls.capturevideo.height * 4 * 4); // FIXME calculate real good buffer size
+               format->flipbuffer = Z_Malloc(cls.capturevideo.width * 4); // FIXME calculate real good buffer size
 
                format->asavepts = ANNOYING_CAST_FOR_MRU(AV_NOPTS_VALUE);
        }