From d21447d096a320a08b3efb2b8768fad0dcdcfd64 Mon Sep 17 00:00:00 2001 From: Vincent Sanders Date: Thu, 5 May 2016 22:28:51 +0100 Subject: move frontends into sub directory --- frontends/atari/bitmap.c | 455 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 455 insertions(+) create mode 100644 frontends/atari/bitmap.c (limited to 'frontends/atari/bitmap.c') diff --git a/frontends/atari/bitmap.c b/frontends/atari/bitmap.c new file mode 100644 index 000000000..a159a6659 --- /dev/null +++ b/frontends/atari/bitmap.c @@ -0,0 +1,455 @@ +/* + * Copyright 2010 Ole Loots + * + * This file is part of NetSurf, http://www.netsurf-browser.org/ + * + * NetSurf 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; version 2 of the License. + * + * NetSurf 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 this program. If not, see . + */ + +#include +#include +#include +#include +#include + +#include "utils/nsoption.h" +#include "utils/log.h" +#include "image/bitmap.h" +#include "desktop/mouse.h" + +#include "atari/bitmap.h" +#include "atari/plot/plot.h" + + +/* + * param bpp bits per pixel, + * param w width of the buffer (in pixel) + * param h height of the buffer (in pixel) + * param flags MFDB_FLAG_NOALLOC | MFDB_FLAG_ZEROMEM | MFDB_FLAG_STAND + * returns size of the fd_addr buffer required or allocated +*/ +int init_mfdb(int bpp, int w, int h, uint32_t flags, MFDB * out ) +{ + int dststride; + dststride = MFDB_STRIDE( w ); + int size = MFDB_SIZE( bpp, dststride, h ); + if( bpp > 0 ) { + if( (flags & MFDB_FLAG_NOALLOC) == 0 ) { + out->fd_addr = malloc( size ); + if( out->fd_addr == NULL ){ + return( 0 ); + } + if( (flags & MFDB_FLAG_ZEROMEM) ){ + memset( out->fd_addr, 0, size ); + } + } + out->fd_stand = (flags & MFDB_FLAG_STAND) ? 1 : 0; + out->fd_nplanes = (short)bpp; + out->fd_r1 = out->fd_r2 = out->fd_r3 = 0; + } else { + memset( out, 0, sizeof(MFDB) ); + } + out->fd_w = dststride; + out->fd_h = h; + out->fd_wdwidth = dststride >> 4; + return( size ); +} + + +/** + * Create a bitmap. + * + * \param w width of image in pixels + * \param h height of image in pixels + * \param bpp number of BYTES per pixel + * \param rowstride linewidth in bytes + * \param state a flag word indicating the initial state + * \param pixdata NULL or an memory address to use as the bitmap pixdata + * \return an opaque struct bitmap, or NULL on memory exhaustion + */ +static void *atari_bitmap_create_ex( int w, int h, short bpp, int rowstride, unsigned int state, void * pixdata ) +{ + struct bitmap * bitmap; + + LOG("width %d (rowstride: %d, bpp: %d), height %d, state %u", w, rowstride, bpp, h, state); + + if( rowstride == 0) { + rowstride = bpp * w; + } + + assert( rowstride >= (w * bpp) ); + bitmap = calloc(1 , sizeof(struct bitmap) ); + if (bitmap) { + if( pixdata == NULL) { + bitmap->pixdata = calloc(1, (rowstride * h)+128); + } + else { + bitmap->pixdata = pixdata; + } + + if (bitmap->pixdata != NULL) { + bitmap->width = w; + bitmap->height = h; + bitmap->opaque = (state & BITMAP_OPAQUE) ? true : false; + bitmap->bpp = bpp; + bitmap->resized = NULL; + bitmap->rowstride = rowstride; + } else { + free(bitmap); + bitmap=NULL; + LOG("Out of memory!"); + } + } + LOG("bitmap %p", bitmap); + return bitmap; +} + + +/* exported interface documented in atari/bitmap.h */ +void *atari_bitmap_create(int w, int h, unsigned int state) +{ + return atari_bitmap_create_ex( w, h, NS_BMP_DEFAULT_BPP, w * NS_BMP_DEFAULT_BPP, state, NULL ); +} + +/** + * The bitmap image has changed, so flush any persistant cache. + * + * \param bitmap a bitmap, as returned by bitmap_create() + */ +static void bitmap_modified(void *bitmap) +{ + struct bitmap *bm = bitmap; + if( bm->resized != NULL ) { + atari_bitmap_destroy( bm->resized ); + bm->resized = NULL; + } + if( bm->converted ){ + if( bm->pixdata != bm->native.fd_addr ){ + free( bm->native.fd_addr ); + } + bm->native.fd_addr = NULL; + bm->converted = false; + } +} + + +/* exported interface documented in atari/bitmap.h */ +void *atari_bitmap_realloc( int w, int h, short bpp, int rowstride, unsigned int state, void * bmp ) +{ + struct bitmap * bitmap = bmp; + int newsize = rowstride * h; + + if( bitmap == NULL ) { + return( NULL ); + } + + assert( bitmap->pixdata != NULL ); + int oldsize = bitmap->rowstride * bitmap->height; + bool doalloc = (state & BITMAP_GROW) ? (newsize > oldsize) : (newsize != oldsize); + if( newsize > oldsize ) + assert( doalloc == true ); + if( doalloc ) { + // TODO: set red band to a specific value and check the red band + // on bitmap_destroy() + bitmap->pixdata = realloc( bitmap->pixdata, newsize + 128 ); + if( bitmap->pixdata == NULL ) + return( NULL ); + } + + if( state & BITMAP_CLEAR ){ + memset( bitmap->pixdata, 0x00, newsize + 128 ); + } + + bitmap->width = w; + bitmap->height = h; + bitmap->bpp = bpp; + bitmap->resized = NULL; + bitmap->rowstride = rowstride; + bitmap_modified( bitmap ); + return( bitmap ); +} + + +/** + * Return a pointer to the pixel data in a bitmap. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return pointer to the pixel buffer + * + * The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end + * of rows. The width of a row in bytes is given by bitmap_get_rowstride(). + */ +static unsigned char *bitmap_get_buffer(void *bitmap) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return NULL; + } + + return bm->pixdata; +} + + +/* exported interface documented in atari/bitmap.h */ +size_t atari_bitmap_buffer_size(void *bitmap) +{ + struct bitmap * bm = bitmap; + if( bm == NULL ) + return 0; + return( bm->rowstride * bm->height ); +} + + +/* exported interface documented in atari/bitmap.h */ +size_t atari_bitmap_get_rowstride(void *bitmap) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return 0; + } + return bm->rowstride; +} + + +/* exported interface documented in atari/bitmap.h */ +void atari_bitmap_destroy(void *bitmap) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return; + } + + if( bm->resized != NULL ) { + atari_bitmap_destroy(bm->resized); + } + if( bm->converted && ( bm->native.fd_addr != bm->pixdata ) ) { + free( bm->native.fd_addr ); + } + free(bm->pixdata); + free(bm); +} + + +/** + * Save a bitmap in the platform's native format. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \param path pathname for file + * \param flags flags controlling how the bitmap is saved. + * \return true on success, false on error and error reported + */ + +static bool bitmap_save(void *bitmap, const char *path, unsigned flags) +{ + return true; +} + + +/** + * Sets whether a bitmap should be plotted opaque + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \param opaque whether the bitmap should be plotted opaque + */ +static void bitmap_set_opaque(void *bitmap, bool opaque) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return; + } + + LOG("setting bitmap %p to %s", bm, opaque ? "opaque" : "transparent"); + bm->opaque = opaque; +} + + +/** + * Tests whether a bitmap has an opaque alpha channel + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return whether the bitmap is opaque + */ +static bool bitmap_test_opaque(void *bitmap) +{ + int tst; + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return false; + } + + if( nsoption_int(atari_transparency) == 0 ){ + return( true ); + } + + tst = bm->width * bm->height; + + while (tst-- > 0) { + if (bm->pixdata[(tst << 2) + 3] != 0xff) { + LOG("bitmap %p has transparency", bm); + return false; + } + } + LOG("bitmap %p is opaque", bm); + return true; +} + + +/* exported interface documented in atari/bitmap.h */ +bool atari_bitmap_get_opaque(void *bitmap) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return false; + } + + return bm->opaque; +} + + +/* exported interface documented in atari/bitmap.h */ +int atari_bitmap_get_width(void *bitmap) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return 0; + } + + return(bm->width); +} + + +/* exported interface documented in atari/bitmap.h */ +int atari_bitmap_get_height(void *bitmap) +{ + struct bitmap *bm = bitmap; + + if (bitmap == NULL) { + LOG("NULL bitmap!"); + return 0; + } + return(bm->height); +} + + +/** + * Gets the number of BYTES per pixel. + */ +static size_t bitmap_get_bpp(void *bitmap) +{ + struct bitmap *bm = bitmap; + return bm->bpp; +} + +/* exported interface documented in atari/bitmap.h */ +bool atari_bitmap_resize(struct bitmap *img, HermesHandle hermes_h, + HermesFormat *fmt, int nw, int nh) +{ + unsigned int state = 0; + short bpp = bitmap_get_bpp( img ); + int stride = atari_bitmap_get_rowstride( img ); + int err; + + if( img->resized != NULL ) { + if( img->resized->width != nw || img->resized->height != nh ) { + atari_bitmap_destroy( img->resized ); + img->resized = NULL; + } else { + /* the bitmap is already resized */ + return(true); + } + } + + /* allocate the mem for resized bitmap */ + if (img->opaque == true) { + state |= BITMAP_OPAQUE; + } + img->resized = atari_bitmap_create_ex( nw, nh, bpp, nw*bpp, state, NULL ); + if( img->resized == NULL ) { + printf("W: %d, H: %d, bpp: %d\n", nw, nh, bpp); + assert(img->resized); + return(false); + } + + /* allocate an converter, only for resizing */ + err = Hermes_ConverterRequest( hermes_h, + fmt, + fmt + ); + if( err == 0 ) { + return(false); + } + + err = Hermes_ConverterCopy( hermes_h, + img->pixdata, + 0, /* x src coord of top left in pixel coords */ + 0, /* y src coord of top left in pixel coords */ + atari_bitmap_get_width( img ), + atari_bitmap_get_height( img ), + stride, /* stride as bytes */ + img->resized->pixdata, + 0, /* x dst coord of top left in pixel coords */ + 0, /* y dst coord of top left in pixel coords */ + nw, nh, + atari_bitmap_get_rowstride(img->resized) /* stride as bytes */ + ); + if( err == 0 ) { + atari_bitmap_destroy( img->resized ); + img->resized = NULL; + return(false); + } + + return(true); +} + +static nserror bitmap_render(struct bitmap *bitmap, struct hlcache_handle *content) +{ + return NSERROR_NOT_IMPLEMENTED; +} + +static struct gui_bitmap_table bitmap_table = { + .create = atari_bitmap_create, + .destroy = atari_bitmap_destroy, + .set_opaque = bitmap_set_opaque, + .get_opaque = atari_bitmap_get_opaque, + .test_opaque = bitmap_test_opaque, + .get_buffer = bitmap_get_buffer, + .get_rowstride = atari_bitmap_get_rowstride, + .get_width = atari_bitmap_get_width, + .get_height = atari_bitmap_get_height, + .get_bpp = bitmap_get_bpp, + .save = bitmap_save, + .modified = bitmap_modified, + .render = bitmap_render, +}; + +struct gui_bitmap_table *atari_bitmap_table = &bitmap_table; + +/* + * Local Variables: + * c-basic-offset:8 + * End: + */ -- cgit v1.2.3