AC_SUBST(FUSE_CFLAGS)
AC_SUBST(FUSE_LIBS)
+PKG_CHECK_MODULES([CAIRO], [cairo],
+ [have_cairo=yes], [have_cairo=no])
+AC_SUBST(CAIRO_CFLAGS)
+AC_SUBST(CAIRO_LIBS)
+
#
# Parse arguments
# This parses all arguments that are given via "--enable-XY" or "--with-XY" and
[specify list of optional render backends])])
enable_renderer_bbulk="no"
enable_renderer_gltex="no"
+enable_renderer_cairo="no"
if test "x$with_renderers" = "x" ; then
enable_renderer_bbulk="yes (default)"
enable_renderer_gltex="yes (default)"
+ enable_renderer_cairo="no (default)"
with_renderers="bbulk,gltex (default)"
else
SAVEIFS="$IFS"
enable_renderer_bbulk="yes"
elif test "x$i" = "xgltex" ; then
enable_renderer_gltex="yes"
+ elif test "x$i" = "xcairo" ; then
+ enable_renderer_cairo="yes"
else
IFS="$SAVEIFS"
AC_ERROR([Unknown renderer $i])
renderer_gltex_missing="enable-renderer-gltex"
fi
+# renderer cairo
+renderer_cairo_avail=no
+renderer_cairo_missing=""
+if test ! "x$enable_renderer_cairo" = "xno" ; then
+ renderer_cairo_avail=yes
+ if test "x$have_cairo" = "xno" ; then
+ renderer_cairo_avail=no
+ renderer_cairo_missing="cairo"
+ fi
+
+ if test "x$renderer_cairo_avail" = "xno" ; then
+ if test "x$enable_renderer_cairo" = "xyes" ; then
+ AC_ERROR([missing for renderer-cairo: $renderer_cairo_missing])
+ fi
+ fi
+else
+ renderer_cairo_missing="enable-renderer-cairo"
+fi
+
# font unifont
font_unifont_avail=no
font_unifont_missing=""
fi
fi
+# renderer cairo
+renderer_cairo_enabled=no
+if test "x$renderer_cairo_avail" = "xyes" ; then
+ if test "x${enable_renderer_cairo% *}" = "xyes" ; then
+ renderer_cairo_enabled=yes
+ fi
+fi
+
# renderer bbulk
renderer_bbulk_enabled=no
if test "x$renderer_bbulk_avail" = "xyes" ; then
AM_CONDITIONAL([BUILD_ENABLE_RENDERER_GLTEX],
[test "x$renderer_gltex_enabled" = "xyes"])
+# renderer cairo
+if test "x$renderer_cairo_enabled" = "xyes" ; then
+ AC_DEFINE([BUILD_ENABLE_RENDERER_CAIRO], [1],
+ [Build cairo rendering backend])
+fi
+
+AM_CONDITIONAL([BUILD_ENABLE_RENDERER_CAIRO],
+ [test "x$renderer_cairo_enabled" = "xyes"])
+
# font unifont
if test "x$font_unifont_enabled" = "xyes" ; then
AC_DEFINE([BUILD_ENABLE_FONT_UNIFONT], [1],
Renderers:
bbulk: $renderer_bbulk_enabled ($renderer_bbulk_avail: $renderer_bbulk_missing)
gltex: $renderer_gltex_enabled ($renderer_gltex_avail: $renderer_gltex_missing)
+ cairo: $renderer_cairo_enabled ($renderer_cairo_avail: $renderer_cairo_missing)
Session Types:
dummy: $session_dummy_enabled ($session_dummy_avail: $session_dummy_missing)
--- /dev/null
+/*
+ * kmscon - Cairo Text Renderer Backend
+ *
+ * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@googlemail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * Cairo based text renderer
+ */
+
+#include <cairo.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include "log.h"
+#include "shl_hashtable.h"
+#include "text.h"
+#include "uterm_video.h"
+
+#define LOG_SUBSYSTEM "text_cairo"
+
+struct tc_glyph {
+ const struct kmscon_glyph *glyph;
+ cairo_surface_t *surf;
+ uint8_t *data;
+};
+
+struct tc_cairo {
+ struct shl_hashtable *glyphs;
+ struct shl_hashtable *bold_glyphs;
+
+ bool new_stride;
+ unsigned int cur;
+ struct uterm_video_buffer buf[2];
+ cairo_surface_t *surf[2];
+ cairo_t *ctx[2];
+
+ bool use_indirect;
+ uint8_t *data[2];
+ struct uterm_video_buffer vbuf;
+};
+
+static int tc_init(struct kmscon_text *txt)
+{
+ struct tc_cairo *tc;
+
+ tc = malloc(sizeof(*tc));
+ if (!tc)
+ return -ENOMEM;
+
+ txt->data = tc;
+ return 0;
+}
+
+static void tc_destroy(struct kmscon_text *txt)
+{
+ struct tc_cairo *tc = txt->data;
+
+ free(tc);
+}
+
+static void free_glyph(void *data)
+{
+ struct tc_glyph *glyph = data;
+
+ cairo_surface_destroy(glyph->surf);
+ free(glyph->data);
+ free(glyph);
+}
+
+static unsigned int format_u2c(unsigned int f)
+{
+ switch (f) {
+ case UTERM_FORMAT_XRGB32:
+ return CAIRO_FORMAT_ARGB32;
+ case UTERM_FORMAT_RGB16:
+ return CAIRO_FORMAT_RGB16_565;
+ case UTERM_FORMAT_GREY:
+ return CAIRO_FORMAT_A8;
+ default:
+ return CAIRO_FORMAT_INVALID;
+ }
+}
+
+static int alloc_indirect(struct kmscon_text *txt,
+ unsigned int w, unsigned int h)
+{
+ struct tc_cairo *tc = txt->data;
+ unsigned int s, i, format;
+ int ret;
+
+ log_info("using blitting engine");
+
+ format = format_u2c(UTERM_FORMAT_XRGB32);
+ s = cairo_format_stride_for_width(format, w);
+
+ tc->data[0] = malloc(s * h);
+ tc->data[1] = malloc(s * h);
+ if (!tc->data[0] || !tc->data[1]) {
+ log_error("cannot allocate memory for render-buffer");
+ ret = -ENOMEM;
+ goto err_free;
+ }
+
+ for (i = 0; i < 2; ++i) {
+ tc->surf[i] = cairo_image_surface_create_for_data(tc->data[i],
+ format,
+ w, h, s);
+
+ ret = cairo_surface_status(tc->surf[i]);
+ if (ret != CAIRO_STATUS_SUCCESS) {
+ log_error("cannot create cairo surface: %d", ret);
+ goto err_cairo;
+ }
+ }
+
+ tc->vbuf.width = w;
+ tc->vbuf.height = h;
+ tc->vbuf.stride = s;
+ tc->vbuf.format = UTERM_FORMAT_XRGB32;
+ tc->use_indirect = true;
+ return 0;
+
+err_cairo:
+ cairo_surface_destroy(tc->surf[1]);
+ cairo_surface_destroy(tc->surf[0]);
+err_free:
+ free(tc->data[1]);
+ free(tc->data[0]);
+ tc->data[1] = NULL;
+ tc->data[0] = NULL;
+ return ret;
+}
+
+static int tc_set(struct kmscon_text *txt)
+{
+ struct tc_cairo *tc = txt->data;
+ int ret, ret2;
+ unsigned int format, w, h;
+ struct uterm_mode *m;
+
+ memset(tc, 0, sizeof(*tc));
+ m = uterm_display_get_current(txt->disp);
+ w = uterm_mode_get_width(m);
+ h = uterm_mode_get_height(m);
+
+ ret = shl_hashtable_new(&tc->glyphs, shl_direct_hash,
+ shl_direct_equal, NULL,
+ free_glyph);
+ if (ret)
+ return ret;
+
+ ret = shl_hashtable_new(&tc->bold_glyphs, shl_direct_hash,
+ shl_direct_equal, NULL,
+ free_glyph);
+ if (ret)
+ goto err_htable;
+
+ /*
+ * TODO: It is actually faster to use a local shadow buffer and then
+ * blit all data to the framebuffer afterwards. Reads seem to be
+ * horribly slow on some mmap'ed framebuffers. However, that's not true
+ * for all so we actually don't know which to use here.
+ */
+ ret = uterm_display_get_buffers(txt->disp, tc->buf,
+ UTERM_FORMAT_XRGB32 |
+ UTERM_FORMAT_RGB16);
+ if (ret) {
+ log_warning("cannot get buffers for display %p",
+ txt->disp);
+ ret = alloc_indirect(txt, w, h);
+ if (ret)
+ goto err_htable_bold;
+ } else {
+ format = format_u2c(tc->buf[0].format);
+ tc->surf[0] = cairo_image_surface_create_for_data(
+ tc->buf[0].data,
+ format,
+ tc->buf[0].width,
+ tc->buf[0].height,
+ tc->buf[0].stride);
+ format = format_u2c(tc->buf[1].format);
+ tc->surf[1] = cairo_image_surface_create_for_data(
+ tc->buf[1].data,
+ format,
+ tc->buf[1].width,
+ tc->buf[1].height,
+ tc->buf[1].stride);
+
+ ret = cairo_surface_status(tc->surf[0]);
+ ret2 = cairo_surface_status(tc->surf[1]);
+ if (ret != CAIRO_STATUS_SUCCESS ||
+ ret2 != CAIRO_STATUS_SUCCESS) {
+ log_error("cannot create cairo surface: %d %d",
+ ret, ret2);
+ cairo_surface_destroy(tc->surf[1]);
+ cairo_surface_destroy(tc->surf[0]);
+ ret = alloc_indirect(txt, w, h);
+ if (ret)
+ goto err_htable_bold;
+ }
+ }
+
+ tc->ctx[0] = cairo_create(tc->surf[0]);
+ tc->ctx[1] = cairo_create(tc->surf[1]);
+ ret = cairo_status(tc->ctx[0]);
+ ret2 = cairo_status(tc->ctx[1]);
+ if (ret != CAIRO_STATUS_SUCCESS || ret2 != CAIRO_STATUS_SUCCESS) {
+ log_error("cannot create cairo contexts: %d %d", ret, ret2);
+ goto err_ctx;
+ }
+
+ txt->cols = w / txt->font->attr.width;
+ txt->rows = h / txt->font->attr.height;
+
+ return 0;
+
+err_ctx:
+ cairo_destroy(tc->ctx[1]);
+ cairo_destroy(tc->ctx[0]);
+ cairo_surface_destroy(tc->surf[1]);
+ cairo_surface_destroy(tc->surf[0]);
+ free(tc->data[1]);
+ free(tc->data[0]);
+err_htable_bold:
+ shl_hashtable_free(tc->bold_glyphs);
+err_htable:
+ shl_hashtable_free(tc->glyphs);
+ return ret;
+}
+
+static void tc_unset(struct kmscon_text *txt)
+{
+ struct tc_cairo *tc = txt->data;
+
+ cairo_destroy(tc->ctx[1]);
+ cairo_destroy(tc->ctx[0]);
+ cairo_surface_destroy(tc->surf[1]);
+ cairo_surface_destroy(tc->surf[0]);
+ free(tc->data[1]);
+ free(tc->data[0]);
+ shl_hashtable_free(tc->bold_glyphs);
+ shl_hashtable_free(tc->glyphs);
+}
+
+static int find_glyph(struct kmscon_text *txt, struct tc_glyph **out,
+ uint32_t id, const uint32_t *ch, size_t len, bool bold)
+{
+ struct tc_cairo *tc = txt->data;
+ struct tc_glyph *glyph;
+ struct shl_hashtable *gtable;
+ struct kmscon_font *font;
+ const struct uterm_video_buffer *buf;
+ uint8_t *dst, *src;
+ unsigned int format, i;
+ int ret, stride;
+ bool res;
+
+ if (bold) {
+ gtable = tc->bold_glyphs;
+ font = txt->bold_font;
+ } else {
+ gtable = tc->glyphs;
+ font = txt->font;
+ }
+
+ res = shl_hashtable_find(gtable, (void**)&glyph,
+ (void*)(unsigned long)id);
+ if (res) {
+ *out = glyph;
+ return 0;
+ }
+
+ glyph = malloc(sizeof(*glyph));
+ if (!glyph)
+ return -ENOMEM;
+ memset(glyph, 0, sizeof(*glyph));
+
+ if (!len)
+ ret = kmscon_font_render_empty(font, &glyph->glyph);
+ else
+ ret = kmscon_font_render(font, id, ch, len, &glyph->glyph);
+
+ if (ret) {
+ ret = kmscon_font_render_inval(font, &glyph->glyph);
+ if (ret)
+ goto err_free;
+ }
+
+ buf = &glyph->glyph->buf;
+ format = format_u2c(buf->format);
+ glyph->surf = cairo_image_surface_create_for_data(buf->data,
+ format,
+ buf->width,
+ buf->height,
+ buf->stride);
+ ret = cairo_surface_status(glyph->surf);
+ if (ret == CAIRO_STATUS_INVALID_STRIDE) {
+ stride = cairo_format_stride_for_width(format, buf->width);
+ if (!tc->new_stride) {
+ tc->new_stride = true;
+ log_debug("wrong stride, copy buffer (%d => %d)",
+ buf->stride, stride);
+ }
+
+ glyph->data = malloc(stride * buf->height);
+ if (!glyph->data) {
+ log_error("cannot allocate memory for glyph storage");
+ ret = -ENOMEM;
+ goto err_cairo;
+ }
+
+ src = buf->data;
+ dst = glyph->data;
+ for (i = 0; i < buf->height; ++i) {
+ memcpy(dst, src, buf->width);
+ dst += stride;
+ src += buf->stride;
+ }
+
+ cairo_surface_destroy(glyph->surf);
+ glyph->surf = cairo_image_surface_create_for_data(glyph->data,
+ format,
+ buf->width,
+ buf->height,
+ stride);
+ ret = cairo_surface_status(glyph->surf);
+ }
+ if (ret != CAIRO_STATUS_SUCCESS) {
+ log_error("cannot create cairo-glyph: %d %p %d %d %d %d",
+ ret, buf->data, format, buf->width, buf->height,
+ buf->stride);
+ ret = -EFAULT;
+ goto err_cairo;
+ }
+
+ ret = shl_hashtable_insert(gtable, (void*)(long)id, glyph);
+ if (ret)
+ goto err_cairo;
+
+ *out = glyph;
+ return 0;
+
+err_cairo:
+ cairo_surface_destroy(glyph->surf);
+ free(glyph->data);
+err_free:
+ free(glyph);
+ return ret;
+}
+
+static int tc_prepare(struct kmscon_text *txt)
+{
+ struct tc_cairo *tc = txt->data;
+ int ret;
+
+ ret = uterm_display_use(txt->disp, NULL);
+ if (ret < 0) {
+ log_error("cannot use display %p", txt->disp);
+ return ret;
+ }
+
+ tc->cur = ret;
+
+ return 0;
+}
+
+static int tc_draw(struct kmscon_text *txt,
+ uint32_t id, const uint32_t *ch, size_t len,
+ unsigned int width,
+ unsigned int posx, unsigned int posy,
+ const struct tsm_screen_attr *attr)
+{
+ struct tc_cairo *tc = txt->data;
+ cairo_t *cr = tc->ctx[tc->cur];
+ struct tc_glyph *glyph;
+ int ret;
+
+ if (!width)
+ return 0;
+
+ ret = find_glyph(txt, &glyph, id, ch, len, attr->bold);
+ if (ret)
+ return ret;
+
+ cairo_rectangle(cr,
+ posx * txt->font->attr.width,
+ posy * txt->font->attr.height,
+ txt->font->attr.width,
+ txt->font->attr.height);
+
+ if (attr->inverse)
+ cairo_set_source_rgb(cr, attr->fr / 255.0, attr->fg / 255.0,
+ attr->fb / 255.0);
+ else
+ cairo_set_source_rgb(cr, attr->br / 255.0, attr->bg / 255.0,
+ attr->bb / 255.0);
+
+ cairo_fill(cr);
+
+ if (attr->inverse)
+ cairo_set_source_rgb(cr, attr->br / 255.0, attr->bg / 255.0,
+ attr->bb / 255.0);
+ else
+ cairo_set_source_rgb(cr, attr->fr / 255.0, attr->fg / 255.0,
+ attr->fb / 255.0);
+
+ cairo_mask_surface(cr, glyph->surf,
+ posx * txt->font->attr.width,
+ posy * txt->font->attr.height);
+
+ return 0;
+}
+
+static int tc_render(struct kmscon_text *txt)
+{
+ struct tc_cairo *tc = txt->data;
+ int ret;
+
+ cairo_surface_flush(tc->surf[tc->cur]);
+
+ if (!tc->use_indirect)
+ return 0;
+
+ tc->vbuf.data = tc->data[tc->cur];
+ ret = uterm_display_blit(txt->disp, &tc->vbuf, 0, 0);
+ if (ret) {
+ log_error("cannot blit back-buffer to display: %d", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+struct kmscon_text_ops kmscon_text_cairo_ops = {
+ .name = "cairo",
+ .owner = NULL,
+ .init = tc_init,
+ .destroy = tc_destroy,
+ .set = tc_set,
+ .unset = tc_unset,
+ .prepare = tc_prepare,
+ .draw = tc_draw,
+ .render = tc_render,
+ .abort = NULL,
+};
projects / platform / upstream / kmscon.git / commitdiff