static void qtrle_decode_24bpp(QtrleContext *s, int stream_ptr, int row_ptr, int lines_to_change) { int rle_code; int pixel_ptr; int row_inc = s->frame.linesize[0]; unsigned char r, g, b; unsigned char *rgb = s->frame.data[0]; int pixel_limit = s->frame.linesize[0] * s->avctx->height; while (lines_to_change--) { CHECK_STREAM_PTR(2); pixel_ptr = row_ptr + (s->buf[stream_ptr++] - 1) * 3; while ((rle_code = (signed char)s->buf[stream_ptr++]) != -1) { if (rle_code == 0) { /* there's another skip code in the stream */ CHECK_STREAM_PTR(1); pixel_ptr += (s->buf[stream_ptr++] - 1) * 3; } else if (rle_code < 0) { /* decode the run length code */ rle_code = -rle_code; CHECK_STREAM_PTR(3); r = s->buf[stream_ptr++]; g = s->buf[stream_ptr++]; b = s->buf[stream_ptr++]; CHECK_PIXEL_PTR(rle_code * 3); while (rle_code--) { rgb[pixel_ptr++] = r; rgb[pixel_ptr++] = g; rgb[pixel_ptr++] = b; } } else { CHECK_STREAM_PTR(rle_code * 3); CHECK_PIXEL_PTR(rle_code * 3); /* copy pixels directly to output */ while (rle_code--) { rgb[pixel_ptr++] = s->buf[stream_ptr++]; rgb[pixel_ptr++] = s->buf[stream_ptr++]; rgb[pixel_ptr++] = s->buf[stream_ptr++]; } } } row_ptr += row_inc; } }