From df4c97fb197dfcd427d766e5decb114efd6fc276 Mon Sep 17 00:00:00 2001 From: melanson Date: Sat, 16 Feb 2002 01:30:11 +0000 Subject: shrink the size of the ghost image, courtesy of Roberto Togni git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4720 b3059339-0415-0410-9bf9-f77b7e298cf2 --- fli.c | 52 ++++++++++++++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 20 deletions(-) (limited to 'fli.c') diff --git a/fli.c b/fli.c index a5299f6704..63ff87ac56 100644 --- a/fli.c +++ b/fli.c @@ -39,7 +39,7 @@ void *init_fli_decoder(int width, int height) { memset(palette, 0, PALETTE_SIZE); - return malloc(width * height * sizeof (unsigned int)); + return malloc(width * height * sizeof (unsigned char)); } void decode_fli_frame( @@ -55,6 +55,8 @@ void decode_fli_frame( int pixel_ptr; int palette_ptr1; int palette_ptr2; + unsigned char palette_idx1; + unsigned char palette_idx2; unsigned int frame_size; int num_chunks; @@ -77,7 +79,7 @@ void decode_fli_frame( signed char byte_run; int pixel_skip; int update_whole_frame = 0; // Palette change flag - unsigned int *fli_ghost_image = (unsigned int *)context; + unsigned char *fli_ghost_image = (unsigned char *)context; int ghost_pixel_ptr; int ghost_y_ptr; @@ -164,18 +166,18 @@ void decode_fli_frame( if (byte_run < 0) { byte_run = -byte_run; - palette_ptr1 = encoded[stream_ptr++] * 4; - palette_ptr2 = encoded[stream_ptr++] * 4; + palette_ptr1 = (palette_idx1 = encoded[stream_ptr++]) * 4; + palette_ptr2 = (palette_idx2 = encoded[stream_ptr++]) * 4; for (j = 0; j < byte_run; j++) { - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr1; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx1; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; if (bytes_per_pixel == 4) /* 32bpp */ pixel_ptr++; - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr2; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx2; decoded[pixel_ptr++] = palette[palette_ptr2 + 0]; decoded[pixel_ptr++] = palette[palette_ptr2 + 1]; decoded[pixel_ptr++] = palette[palette_ptr2 + 2]; @@ -187,8 +189,8 @@ void decode_fli_frame( { for (j = 0; j < byte_run * 2; j++) { - palette_ptr1 = encoded[stream_ptr++] * 4; - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr1; + palette_ptr1 = (palette_idx1 = encoded[stream_ptr++]) * 4; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx1; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; @@ -231,8 +233,8 @@ void decode_fli_frame( { for (j = 0; j < byte_run; j++) { - palette_ptr1 = encoded[stream_ptr++] * 4; - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr1; + palette_ptr1 = (palette_idx1 = encoded[stream_ptr++]) * 4; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx1; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; @@ -243,10 +245,10 @@ void decode_fli_frame( else { byte_run = -byte_run; - palette_ptr1 = encoded[stream_ptr++] * 4; + palette_ptr1 = (palette_idx1 = encoded[stream_ptr++]) * 4; for (j = 0; j < byte_run; j++) { - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr1; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx1; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; @@ -266,7 +268,7 @@ void decode_fli_frame( case FLI_BLACK: // set the whole frame to color 0 (which is usually black) by // clearing the ghost image and trigger a full frame update - memset(fli_ghost_image, 0, width * height * sizeof(unsigned int)); + memset(fli_ghost_image, 0, width * height * sizeof(unsigned char)); update_whole_frame = 1; break; @@ -284,10 +286,10 @@ void decode_fli_frame( byte_run = encoded[stream_ptr++]; if (byte_run > 0) { - palette_ptr1 = encoded[stream_ptr++] * 4; + palette_ptr1 = (palette_idx1 = encoded[stream_ptr++]) * 4; for (j = 0; j < byte_run; j++) { - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr1; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx1; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; @@ -300,8 +302,8 @@ void decode_fli_frame( byte_run = -byte_run; for (j = 0; j < byte_run; j++) { - palette_ptr1 = encoded[stream_ptr++] * 4; - fli_ghost_image[ghost_pixel_ptr++] = palette_ptr1; + palette_ptr1 = (palette_idx1 = encoded[stream_ptr++]) * 4; + fli_ghost_image[ghost_pixel_ptr++] = palette_idx1; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; @@ -319,7 +321,16 @@ void decode_fli_frame( case FLI_COPY: // copy the chunk (uncompressed frame) to the ghost image and // schedule the whole frame to be updated - memcpy(fli_ghost_image, &encoded[stream_ptr], chunk_size - 6); + if (chunk_size - 6 > width * height) + { + mp_msg(MSGT_DECVIDEO, MSGL_WARN, + "FLI: in chunk FLI_COPY : source data (%d bytes) bigger than image," \ + " skipping chunk\n", + chunk_size - 6); + break; + } + else + memcpy(fli_ghost_image, &encoded[stream_ptr], chunk_size - 6); stream_ptr += chunk_size - 6; update_whole_frame = 1; break; @@ -330,7 +341,8 @@ void decode_fli_frame( break; default: - printf ("FLI: Unrecognized chunk type: %d\n", chunk_type); + mp_msg (MSGT_DECVIDEO, MSGL_WARN, + "FLI: Unrecognized chunk type: %d\n", chunk_type); break; } @@ -343,7 +355,7 @@ void decode_fli_frame( pixel_ptr = ghost_pixel_ptr = 0; while (pixel_ptr < (width * height * bytes_per_pixel)) { - palette_ptr1 = fli_ghost_image[ghost_pixel_ptr++]; + palette_ptr1 = fli_ghost_image[ghost_pixel_ptr++] * 4; decoded[pixel_ptr++] = palette[palette_ptr1 + 0]; decoded[pixel_ptr++] = palette[palette_ptr1 + 1]; decoded[pixel_ptr++] = palette[palette_ptr1 + 2]; -- cgit v1.2.3