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-rw-r--r--libmpcodecs/vd_sgi.c343
1 files changed, 0 insertions, 343 deletions
diff --git a/libmpcodecs/vd_sgi.c b/libmpcodecs/vd_sgi.c
deleted file mode 100644
index 1ec9b2e868..0000000000
--- a/libmpcodecs/vd_sgi.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/*
- * Copyright (c) 2003 Todd Kirby <slapcat@pacbell.net>
- *
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <libavutil/intreadwrite.h>
-
-#include "config.h"
-#include "mp_msg.h"
-#include "mpbswap.h"
-#include "vd_internal.h"
-
-#define SGI_HEADER_LEN 512
-#define SGI_MAGIC 474
-
-#define SGI_GRAYSCALE_IMAGE 1
-#define SGI_RGB_IMAGE 3
-#define SGI_RGBA_IMAGE 4
-
-#define OUT_PIXEL_STRIDE 3 /* RGB */
-
-
-static const vd_info_t info =
-{
- "SGI Image decoder",
- "sgi",
- "Todd Kirby",
- "Todd Kirby",
- ""
-};
-
-LIBVD_EXTERN(sgi)
-
-typedef struct {
- short magic;
- char rle;
- char bytes_per_channel;
- unsigned short dimension;
- unsigned short xsize;
- unsigned short ysize;
- unsigned short zsize;
-} SGIInfo;
-
-static unsigned int outfmt = IMGFMT_BGR24;
-
-static unsigned short last_x = -1;
-static unsigned short last_y = -1;
-
-
-/* to set/get/query special features/parameters */
-static int
-control(sh_video_t* sh, int cmd, void *arg, ...)
-{
- switch (cmd)
- {
- case VDCTRL_QUERY_FORMAT:
- if (*((unsigned int *) arg) == outfmt) {
- return CONTROL_TRUE;
- }
- return CONTROL_FALSE;
- }
- return CONTROL_UNKNOWN;
-}
-
-
-/* init driver */
-static int
-init(sh_video_t *sh)
-{
- sh->context = calloc(1, sizeof(SGIInfo));
- last_x = -1;
-
- return 1;
-}
-
-
-/* uninit driver */
-static void
-uninit(sh_video_t *sh)
-{
- SGIInfo *info = sh->context;
- free(info);
-}
-
-
-/* expand an rle row into a channel */
-static void
-expandrow(unsigned char *optr, unsigned char *iptr, int chan_offset)
-{
- unsigned char pixel, count;
- optr += chan_offset;
-
- while (1) {
- pixel = *iptr++;
-
- if (!(count = (pixel & 0x7f))) {
- return;
- }
- if(pixel & 0x80) {
- while (count--) {
- *optr = *iptr;
- optr += OUT_PIXEL_STRIDE;
- iptr++;
- }
- } else {
- pixel = *iptr++;
-
- while (count--) {
- *optr = pixel;
- optr += OUT_PIXEL_STRIDE;
- }
- }
- }
-}
-
-
-/* expand an rle row into all 3 channels.
- a separate function for grayscale so we don't slow down the
- more common case rgb function with a bunch of ifs. */
-static void
-expandrow_gs(unsigned char *optr, unsigned char *iptr)
-{
- unsigned char pixel, count;
-
- while (1) {
- pixel = *iptr++;
-
- if (!(count = (pixel & 0x7f))) {
- return;
- }
- if(pixel & 0x80) {
- while (count--) {
- optr[0] = *iptr;
- optr[1] = *iptr;
- optr[2] = *iptr;
- optr += OUT_PIXEL_STRIDE;
- iptr++;
- }
- } else {
- pixel = *iptr++;
-
- while (count--) {
- optr[0] = pixel;
- optr[1] = pixel;
- optr[2] = pixel;
- optr += OUT_PIXEL_STRIDE;
- }
- }
- }
-}
-
-
-/* decode a run length encoded sgi image */
-static void
-decode_rle_sgi(SGIInfo *info, unsigned char *data, mp_image_t *mpi)
-{
- unsigned char *rle_data, *dest_row;
- uint32_t *starttab;
- int y, z, ysize, zsize, chan_offset;
- long start_offset;
-
- ysize = info->ysize;
- zsize = info->zsize;
-
- /* rle offset table is right after the header */
- starttab = (uint32_t*)(data + SGI_HEADER_LEN);
-
- for (z = 0; z < zsize; z++) {
-
- /* set chan_offset so RGB ends up BGR */
- chan_offset = (zsize - 1) - z;
-
- /* The origin for SGI images is the lower-left corner
- so read scan lines from bottom to top */
- for (y = ysize - 1; y >= 0; y--) {
- dest_row = mpi->planes[0] + mpi->stride[0] * (ysize - 1 - y);
-
- /* set start of next run (offsets are from start of header) */
- start_offset = AV_RB32(&starttab[y + z * ysize]);
-
- rle_data = &data[start_offset];
-
- if(info->zsize == SGI_GRAYSCALE_IMAGE) {
- expandrow_gs(dest_row, rle_data);
- } else {
- expandrow(dest_row, rle_data, chan_offset);
- }
- }
- }
-}
-
-
-/* decode an sgi image */
-static void
-decode_uncompressed_sgi(SGIInfo *info, unsigned char *data, mp_image_t *mpi)
-{
- unsigned char *src_row, *dest_row;
- int x, y, z, xsize, ysize, zsize, chan_offset;
-
- xsize = info->xsize;
- ysize = info->ysize;
- zsize = info->zsize;
-
- /* skip header */
- data += SGI_HEADER_LEN;
-
- for (z = 0; z < zsize; z++) {
-
- /* set row ptr to start of current plane */
- src_row = data + (xsize * ysize * z);
-
- /* set chan_offset for RGB -> BGR */
- chan_offset = (zsize - 1) - z;
-
- /* the origin for SGI images is the lower-left corner
- so read scan lines from bottom to top. */
- for (y = ysize - 1; y >= 0; y--) {
- dest_row = mpi->planes[0] + mpi->stride[0] * y;
- for (x = 0; x < xsize; x++) {
-
- /* we only do 24 bit output so promote 8 bit pixels to 24 */
- if (zsize == SGI_GRAYSCALE_IMAGE) {
- /* write greyscale value into all channels */
- dest_row[0] = src_row[x];
- dest_row[1] = src_row[x];
- dest_row[2] = src_row[x];
- } else {
- dest_row[chan_offset] = src_row[x];
- }
-
- dest_row += OUT_PIXEL_STRIDE;
- }
-
- /* move to next row of the current source plane */
- src_row += xsize;
- }
- }
-}
-
-
-/* read sgi header fields */
-static void
-read_sgi_header(unsigned char *buf, SGIInfo *info)
-{
- /* sgi data is always stored in big endian byte order */
- info->magic = AV_RB16(&buf[0]);
- info->rle = buf[2];
- info->bytes_per_channel = buf[3];
- info->dimension = AV_RB16(&buf[4]);
- info->xsize = AV_RB16(&buf[6]);
- info->ysize = AV_RB16(&buf[8]);
- info->zsize = AV_RB16(&buf[10]);
-}
-
-
-/* decode a frame */
-static
-mp_image_t *decode(sh_video_t *sh, void *raw, int len, int flags)
-{
- SGIInfo *info = sh->context;
- unsigned char *data = raw;
- mp_image_t *mpi;
-
- if (len <= 0) {
- return NULL; /* skip frame */
- }
-
- read_sgi_header(data, info);
-
- /* make sure this is an SGI image file */
- if (info->magic != SGI_MAGIC) {
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Bad magic number in image.\n");
- return NULL;
- }
-
- /* check image depth */
- if (info->bytes_per_channel != 1) {
- mp_msg(MSGT_DECVIDEO, MSGL_INFO,
- "Unsupported bytes per channel value %i.\n", info->bytes_per_channel);
- return NULL;
- }
-
- /* check image dimension */
- if (info->dimension != 2 && info->dimension != 3) {
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Unsupported image dimension %i.\n",
- info->dimension);
- return NULL;
- }
-
- /* change rgba images to rgb so alpha channel will be ignored */
- if (info->zsize == SGI_RGBA_IMAGE) {
- info->zsize = SGI_RGB_IMAGE;
- }
-
- /* check image depth */
- if (info->zsize != SGI_RGB_IMAGE && info->zsize != SGI_GRAYSCALE_IMAGE) {
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Unsupported image depth.\n");
- return NULL;
- }
-
- /* (re)init libvo if image size is changed */
- if (last_x != info->xsize || last_y != info->ysize)
- {
- last_x = info->xsize;
- last_y = info->ysize;
-
- if (!mpcodecs_config_vo(sh, info->xsize, info->ysize, outfmt)) {
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Config vo failed:\n");
- return NULL;
- }
- }
-
- if (!(mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
- info->xsize, info->ysize))) {
- return NULL;
- }
-
- if (info->rle) {
- decode_rle_sgi(info, data, mpi);
- } else {
- decode_uncompressed_sgi(info, data, mpi);
- }
-
- return mpi;
-}
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