avcodec/libopenjpegenc: drop dependancy on sizeof(AVFrame)

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

libavcodec/libopenjpegenc.c

@@ -480,7 +480,7 @@ static int libopenjpeg_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     opj_cio_t *stream     = ctx->stream;
     int cpyresult = 0;
     int ret, len;
-    AVFrame gbrframe;
+    AVFrame *gbrframe;
 
     switch (avctx->pix_fmt) {
     case AV_PIX_FMT_RGB24:
@@ -501,18 +501,20 @@ static int libopenjpeg_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     case AV_PIX_FMT_GBRP12:
     case AV_PIX_FMT_GBRP14:
     case AV_PIX_FMT_GBRP16:
-        gbrframe = *frame;
-        gbrframe.data[0] = frame->data[2]; // swap to be rgb
-        gbrframe.data[1] = frame->data[0];
-        gbrframe.data[2] = frame->data[1];
-        gbrframe.linesize[0] = frame->linesize[2];
-        gbrframe.linesize[1] = frame->linesize[0];
-        gbrframe.linesize[2] = frame->linesize[1];
+        gbrframe = av_frame_alloc();
+        av_frame_ref(gbrframe, frame);
+        gbrframe->data[0] = frame->data[2]; // swap to be rgb
+        gbrframe->data[1] = frame->data[0];
+        gbrframe->data[2] = frame->data[1];
+        gbrframe->linesize[0] = frame->linesize[2];
+        gbrframe->linesize[1] = frame->linesize[0];
+        gbrframe->linesize[2] = frame->linesize[1];
         if (avctx->pix_fmt == AV_PIX_FMT_GBR24P) {
-            cpyresult = libopenjpeg_copy_unpacked8(avctx, &gbrframe, image);
+            cpyresult = libopenjpeg_copy_unpacked8(avctx, gbrframe, image);
         } else {
-            cpyresult = libopenjpeg_copy_unpacked16(avctx, &gbrframe, image);
+            cpyresult = libopenjpeg_copy_unpacked16(avctx, gbrframe, image);
         }
+        av_frame_free(&gbrframe);
         break;
     case AV_PIX_FMT_GRAY8:
     case AV_PIX_FMT_YUV410P: