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Code Issues Releases Wiki Activity

shrink the size of the ghost image, courtesy of Roberto Togni

Browse Source 
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4720 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
melanson 2002-02-16 01:30:11 +00:00
parent 0b9a7c54b9
commit df4c97fb19
1 changed files with 32 additions and 20 deletions
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52
fli.c
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@ -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];