/*
-======================================================================
-clip.c
+ ======================================================================
+ clip.c
-Functions for LWO2 image references.
+ Functions for LWO2 image references.
-Ernie Wright 17 Sep 00
-====================================================================== */
+ Ernie Wright 17 Sep 00
+ ====================================================================== */
#include "../picointernal.h"
#include "lwo2.h"
/*
-======================================================================
-lwFreeClip()
-
-Free memory used by an lwClip.
-====================================================================== */
-
-void lwFreeClip( lwClip *clip )
-{
- if ( clip ) {
- lwListFree( clip->ifilter, (void *) lwFreePlugin );
- lwListFree( clip->pfilter, (void *) lwFreePlugin );
-
- switch ( clip->type ) {
- case ID_STIL:
- _pico_free( clip->source.still.name);
- break;
-
- case ID_ISEQ:
- _pico_free( clip->source.seq.prefix );
- _pico_free( clip->source.seq.suffix );
- break;
-
- case ID_ANIM:
- _pico_free( clip->source.anim.name );
- _pico_free( clip->source.anim.server );
- _pico_free( clip->source.anim.data );
- break;
-
- case ID_XREF:
- _pico_free( clip->source.xref.string );
- break;
-
- case ID_STCC:
- _pico_free( clip->source.cycle.name );
- break;
-
- default:
- break;
- }
-
- _pico_free( clip );
- }
+ ======================================================================
+ lwFreeClip()
+
+ Free memory used by an lwClip.
+ ====================================================================== */
+
+void lwFreeClip( lwClip *clip ){
+ if ( clip ) {
+ lwListFree( clip->ifilter, (void *) lwFreePlugin );
+ lwListFree( clip->pfilter, (void *) lwFreePlugin );
+
+ switch ( clip->type ) {
+ case ID_STIL:
+ _pico_free( clip->source.still.name );
+ break;
+
+ case ID_ISEQ:
+ _pico_free( clip->source.seq.prefix );
+ _pico_free( clip->source.seq.suffix );
+ break;
+
+ case ID_ANIM:
+ _pico_free( clip->source.anim.name );
+ _pico_free( clip->source.anim.server );
+ _pico_free( clip->source.anim.data );
+ break;
+
+ case ID_XREF:
+ _pico_free( clip->source.xref.string );
+ break;
+
+ case ID_STCC:
+ _pico_free( clip->source.cycle.name );
+ break;
+
+ default:
+ break;
+ }
+
+ _pico_free( clip );
+ }
}
/*
-======================================================================
-lwGetClip()
+ ======================================================================
+ lwGetClip()
-Read image references from a CLIP chunk in an LWO2 file.
-====================================================================== */
-
-lwClip *lwGetClip( picoMemStream_t *fp, int cksize )
-{
- lwClip *clip;
- lwPlugin *filt;
- unsigned int id;
- unsigned short sz;
- int pos, rlen;
-
-
- /* allocate the Clip structure */
-
- clip = _pico_calloc( 1, sizeof( lwClip ));
- if ( !clip ) goto Fail;
-
- clip->contrast.val = 1.0f;
- clip->brightness.val = 1.0f;
- clip->saturation.val = 1.0f;
- clip->gamma.val = 1.0f;
-
- /* remember where we started */
-
- set_flen( 0 );
- pos = _pico_memstream_tell( fp );
-
- /* index */
-
- clip->index = getI4( fp );
-
- /* first subchunk header */
-
- clip->type = getU4( fp );
- sz = getU2( fp );
- if ( 0 > get_flen() ) goto Fail;
-
- sz += sz & 1;
- set_flen( 0 );
-
- switch ( clip->type ) {
- case ID_STIL:
- clip->source.still.name = getS0( fp );
- break;
-
- case ID_ISEQ:
- clip->source.seq.digits = getU1( fp );
- clip->source.seq.flags = getU1( fp );
- clip->source.seq.offset = getI2( fp );
- getU2( fp ); /* not sure what this is yet */
- clip->source.seq.start = getI2( fp );
- clip->source.seq.end = getI2( fp );
- clip->source.seq.prefix = getS0( fp );
- clip->source.seq.suffix = getS0( fp );
- break;
-
- case ID_ANIM:
- clip->source.anim.name = getS0( fp );
- clip->source.anim.server = getS0( fp );
- rlen = get_flen();
- clip->source.anim.data = getbytes( fp, sz - rlen );
- break;
-
- case ID_XREF:
- clip->source.xref.index = getI4( fp );
- clip->source.xref.string = getS0( fp );
- break;
-
- case ID_STCC:
- clip->source.cycle.lo = getI2( fp );
- clip->source.cycle.hi = getI2( fp );
- clip->source.cycle.name = getS0( fp );
- break;
-
- default:
- break;
- }
-
- /* error while reading current subchunk? */
-
- rlen = get_flen();
- if ( rlen < 0 || rlen > sz ) goto Fail;
-
- /* skip unread parts of the current subchunk */
-
- if ( rlen < sz )
- _pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
-
- /* end of the CLIP chunk? */
-
- rlen = _pico_memstream_tell( fp ) - pos;
- if ( cksize < rlen ) goto Fail;
- if ( cksize == rlen )
- return clip;
-
- /* process subchunks as they're encountered */
-
- id = getU4( fp );
- sz = getU2( fp );
- if ( 0 > get_flen() ) goto Fail;
-
- while ( 1 ) {
- sz += sz & 1;
- set_flen( 0 );
-
- switch ( id ) {
- case ID_TIME:
- clip->start_time = getF4( fp );
- clip->duration = getF4( fp );
- clip->frame_rate = getF4( fp );
- break;
-
- case ID_CONT:
- clip->contrast.val = getF4( fp );
- clip->contrast.eindex = getVX( fp );
- break;
-
- case ID_BRIT:
- clip->brightness.val = getF4( fp );
- clip->brightness.eindex = getVX( fp );
- break;
-
- case ID_SATR:
- clip->saturation.val = getF4( fp );
- clip->saturation.eindex = getVX( fp );
- break;
-
- case ID_HUE:
- clip->hue.val = getF4( fp );
- clip->hue.eindex = getVX( fp );
- break;
-
- case ID_GAMM:
- clip->gamma.val = getF4( fp );
- clip->gamma.eindex = getVX( fp );
- break;
-
- case ID_NEGA:
- clip->negative = getU2( fp );
- break;
-
- case ID_IFLT:
- case ID_PFLT:
- filt = _pico_calloc( 1, sizeof( lwPlugin ));
- if ( !filt ) goto Fail;
-
- filt->name = getS0( fp );
- filt->flags = getU2( fp );
- rlen = get_flen();
- filt->data = getbytes( fp, sz - rlen );
-
- if ( id == ID_IFLT ) {
- lwListAdd( (void *) &clip->ifilter, filt );
- clip->nifilters++;
- }
- else {
- lwListAdd( (void *) &clip->pfilter, filt );
- clip->npfilters++;
- }
- break;
-
- default:
- break;
- }
-
- /* error while reading current subchunk? */
-
- rlen = get_flen();
- if ( rlen < 0 || rlen > sz ) goto Fail;
-
- /* skip unread parts of the current subchunk */
-
- if ( rlen < sz )
- _pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
-
- /* end of the CLIP chunk? */
-
- rlen = _pico_memstream_tell( fp ) - pos;
- if ( cksize < rlen ) goto Fail;
- if ( cksize == rlen ) break;
-
- /* get the next chunk header */
-
- set_flen( 0 );
- id = getU4( fp );
- sz = getU2( fp );
- if ( 6 != get_flen() ) goto Fail;
- }
-
- return clip;
+ Read image references from a CLIP chunk in an LWO2 file.
+ ====================================================================== */
+
+lwClip *lwGetClip( picoMemStream_t *fp, int cksize ){
+ lwClip *clip;
+ lwPlugin *filt;
+ unsigned int id;
+ unsigned short sz;
+ int pos, rlen;
+
+
+ /* allocate the Clip structure */
+
+ clip = _pico_calloc( 1, sizeof( lwClip ) );
+ if ( !clip ) {
+ goto Fail;
+ }
+
+ clip->contrast.val = 1.0f;
+ clip->brightness.val = 1.0f;
+ clip->saturation.val = 1.0f;
+ clip->gamma.val = 1.0f;
+
+ /* remember where we started */
+
+ set_flen( 0 );
+ pos = _pico_memstream_tell( fp );
+
+ /* index */
+
+ clip->index = getI4( fp );
+
+ /* first subchunk header */
+
+ clip->type = getU4( fp );
+ sz = getU2( fp );
+ if ( 0 > get_flen() ) {
+ goto Fail;
+ }
+
+ sz += sz & 1;
+ set_flen( 0 );
+
+ switch ( clip->type ) {
+ case ID_STIL:
+ clip->source.still.name = getS0( fp );
+ break;
+
+ case ID_ISEQ:
+ clip->source.seq.digits = getU1( fp );
+ clip->source.seq.flags = getU1( fp );
+ clip->source.seq.offset = getI2( fp );
+ getU2( fp ); /* not sure what this is yet */
+ clip->source.seq.start = getI2( fp );
+ clip->source.seq.end = getI2( fp );
+ clip->source.seq.prefix = getS0( fp );
+ clip->source.seq.suffix = getS0( fp );
+ break;
+
+ case ID_ANIM:
+ clip->source.anim.name = getS0( fp );
+ clip->source.anim.server = getS0( fp );
+ rlen = get_flen();
+ clip->source.anim.data = getbytes( fp, sz - rlen );
+ break;
+
+ case ID_XREF:
+ clip->source.xref.index = getI4( fp );
+ clip->source.xref.string = getS0( fp );
+ break;
+
+ case ID_STCC:
+ clip->source.cycle.lo = getI2( fp );
+ clip->source.cycle.hi = getI2( fp );
+ clip->source.cycle.name = getS0( fp );
+ break;
+
+ default:
+ break;
+ }
+
+ /* error while reading current subchunk? */
+
+ rlen = get_flen();
+ if ( rlen < 0 || rlen > sz ) {
+ goto Fail;
+ }
+
+ /* skip unread parts of the current subchunk */
+
+ if ( rlen < sz ) {
+ _pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
+ }
+
+ /* end of the CLIP chunk? */
+
+ rlen = _pico_memstream_tell( fp ) - pos;
+ if ( cksize < rlen ) {
+ goto Fail;
+ }
+ if ( cksize == rlen ) {
+ return clip;
+ }
+
+ /* process subchunks as they're encountered */
+
+ id = getU4( fp );
+ sz = getU2( fp );
+ if ( 0 > get_flen() ) {
+ goto Fail;
+ }
+
+ while ( 1 ) {
+ sz += sz & 1;
+ set_flen( 0 );
+
+ switch ( id ) {
+ case ID_TIME:
+ clip->start_time = getF4( fp );
+ clip->duration = getF4( fp );
+ clip->frame_rate = getF4( fp );
+ break;
+
+ case ID_CONT:
+ clip->contrast.val = getF4( fp );
+ clip->contrast.eindex = getVX( fp );
+ break;
+
+ case ID_BRIT:
+ clip->brightness.val = getF4( fp );
+ clip->brightness.eindex = getVX( fp );
+ break;
+
+ case ID_SATR:
+ clip->saturation.val = getF4( fp );
+ clip->saturation.eindex = getVX( fp );
+ break;
+
+ case ID_HUE:
+ clip->hue.val = getF4( fp );
+ clip->hue.eindex = getVX( fp );
+ break;
+
+ case ID_GAMM:
+ clip->gamma.val = getF4( fp );
+ clip->gamma.eindex = getVX( fp );
+ break;
+
+ case ID_NEGA:
+ clip->negative = getU2( fp );
+ break;
+
+ case ID_IFLT:
+ case ID_PFLT:
+ filt = _pico_calloc( 1, sizeof( lwPlugin ) );
+ if ( !filt ) {
+ goto Fail;
+ }
+
+ filt->name = getS0( fp );
+ filt->flags = getU2( fp );
+ rlen = get_flen();
+ filt->data = getbytes( fp, sz - rlen );
+
+ if ( id == ID_IFLT ) {
+ lwListAdd( (void *) &clip->ifilter, filt );
+ clip->nifilters++;
+ }
+ else {
+ lwListAdd( (void *) &clip->pfilter, filt );
+ clip->npfilters++;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ /* error while reading current subchunk? */
+
+ rlen = get_flen();
+ if ( rlen < 0 || rlen > sz ) {
+ goto Fail;
+ }
+
+ /* skip unread parts of the current subchunk */
+
+ if ( rlen < sz ) {
+ _pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
+ }
+
+ /* end of the CLIP chunk? */
+
+ rlen = _pico_memstream_tell( fp ) - pos;
+ if ( cksize < rlen ) {
+ goto Fail;
+ }
+ if ( cksize == rlen ) {
+ break;
+ }
+
+ /* get the next chunk header */
+
+ set_flen( 0 );
+ id = getU4( fp );
+ sz = getU2( fp );
+ if ( 6 != get_flen() ) {
+ goto Fail;
+ }
+ }
+
+ return clip;
Fail:
- lwFreeClip( clip );
- return NULL;
+ lwFreeClip( clip );
+ return NULL;
}
/*
-======================================================================
-lwFindClip()
-
-Returns an lwClip pointer, given a clip index.
-====================================================================== */
-
-lwClip *lwFindClip( lwClip *list, int index )
-{
- lwClip *clip;
-
- clip = list;
- while ( clip ) {
- if ( clip->index == index ) break;
- clip = clip->next;
- }
- return clip;
+ ======================================================================
+ lwFindClip()
+
+ Returns an lwClip pointer, given a clip index.
+ ====================================================================== */
+
+lwClip *lwFindClip( lwClip *list, int index ){
+ lwClip *clip;
+
+ clip = list;
+ while ( clip ) {
+ if ( clip->index == index ) {
+ break;
+ }
+ clip = clip->next;
+ }
+ return clip;
}
projects / xonotic / netradiant.git / blobdiff