lavc/flicvideo: Implement padding in COPY chunks.

Reviewed-by: Reimar

libavcodec/flicvideo.c

@@ -423,7 +423,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
 
         case FLI_COPY:
             /* copy the chunk (uncompressed frame) */
-            if (chunk_size - 6 != s->avctx->width * s->avctx->height) {
+            if (chunk_size - 6 != FFALIGN(s->avctx->width, 4) * s->avctx->height) {
                 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
                        "has incorrect size, skipping chunk\n", chunk_size - 6);
                 bytestream2_skip(&g2, chunk_size - 6);
@@ -432,6 +432,8 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                      y_ptr += s->frame->linesize[0]) {
                     bytestream2_get_buffer(&g2, &pixels[y_ptr],
                                            s->avctx->width);
+                    if (s->avctx->width & 3)
+                        bytestream2_skip(&g2, 4 - (s->avctx->width & 3));
                 }
             }
             break;
@@ -711,7 +713,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
         case FLI_COPY:
         case FLI_DTA_COPY:
             /* copy the chunk (uncompressed frame) */
-            if (chunk_size - 6 > (unsigned int)(s->avctx->width * s->avctx->height)*2) {
+            if (chunk_size - 6 > (unsigned int)(FFALIGN(s->avctx->width, 2) * s->avctx->height)*2) {
                 av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
                        "bigger than image, skipping chunk\n", chunk_size - 6);
                 bytestream2_skip(&g2, chunk_size - 6);
@@ -727,6 +729,8 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                       pixel_ptr += 2;
                       pixel_countdown--;
                     }
+                    if (s->avctx->width & 1)
+                        bytestream2_skip(&g2, 2);
                 }
             }
             break;