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FS-7506 FS-7513: set banner with video_banner_text variable set before calling in, NEEDS DOCS params are parsable inside a {} string

This commit is contained in:
Anthony Minessale 2015-02-11 14:07:06 -06:00 committed by Michael Jerris
parent 9d7eef28e6
commit 0697db4fb4
9 changed files with 1067 additions and 196 deletions
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7
Makefile.am
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@ -153,9 +153,9 @@ libfreeswitch_spandsp_la_SOURCES = libs/spandsp/src/plc.c libs/spandsp/src/alloc
libfreeswitch_spandsp_la_CFLAGS = -Ilibs/spandsp/src $(CORE_CFLAGS) $(AM_CFLAGS)
CORE_LIBS+=libfreeswitch_spandsp.la
lib_LTLIBRARIES = libfreeswitch.la
libfreeswitch_la_CFLAGS = $(CORE_CFLAGS) $(SQLITE_CFLAGS) $(CURL_CFLAGS) $(PCRE_CFLAGS) $(SPEEX_CFLAGS) $(LIBEDIT_CFLAGS) $(openssl_CFLAGS) $(AM_CFLAGS)
libfreeswitch_la_CFLAGS = $(CORE_CFLAGS) $(SQLITE_CFLAGS) $(FREETYPE_CFLAGS) $(CURL_CFLAGS) $(PCRE_CFLAGS) $(SPEEX_CFLAGS) $(LIBEDIT_CFLAGS) $(openssl_CFLAGS) $(AM_CFLAGS)
libfreeswitch_la_LDFLAGS = -version-info 1:0:0 $(AM_LDFLAGS) $(PLATFORM_CORE_LDFLAGS) -no-undefined
libfreeswitch_la_LIBADD = $(CORE_LIBS) $(APR_LIBS) $(SQLITE_LIBS) $(CURL_LIBS) $(PCRE_LIBS) $(SPEEX_LIBS) $(LIBEDIT_LIBS) $(openssl_LIBS) $(VPX_LIBS) $(PLATFORM_CORE_LIBS)
libfreeswitch_la_LIBADD = $(CORE_LIBS) $(APR_LIBS) $(SQLITE_LIBS) $(FREETYPE_LIBS) $(CURL_LIBS) $(PCRE_LIBS) $(SPEEX_LIBS) $(LIBEDIT_LIBS) $(openssl_LIBS) $(VPX_LIBS) $(PLATFORM_CORE_LIBS)
libfreeswitch_la_DEPENDENCIES = $(BUILT_SOURCES)
if HAVE_ODBC
@ -215,6 +215,8 @@ library_include_HEADERS = \
src/include/switch_curl.h \
src/include/switch_json.h \
src/include/switch_stfu.h \
src/include/switch_utf8.h \
src/include/switch_vpx.h \
libs/libteletone/src/libteletone_detect.h \
libs/libteletone/src/libteletone_generate.h \
libs/libteletone/src/libteletone.h \
@ -293,6 +295,7 @@ libfreeswitch_la_SOURCES = \
src/switch_curl.c \
src/switch_hashtable.c\
src/switch_stfu.c \
src/switch_utf8.c \
libs/libtpl-1.5/src/tpl.c \
libs/libteletone/src/libteletone_detect.c \
libs/libteletone/src/libteletone_generate.c \

1
configure.ac
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@ -1192,6 +1192,7 @@ module_enabled() {
grep -v -e "\#" -e "^\$" modules.conf | sed -e "s|^.*/||" | grep "^${1}\$" >/dev/null
}
PKG_CHECK_MODULES([FREETYPE], [freetype2 >= 2.4.9])
PKG_CHECK_MODULES([SQLITE], [sqlite3 >= 3.6.20])
PKG_CHECK_MODULES([CURL], [libcurl >= 7.19])
PKG_CHECK_MODULES([PCRE], [libpcre >= 7.8])

38
src/include/switch_core_video.h
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@ -22,6 +22,7 @@
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Anthony Minessale II <anthm@freeswitch.org>
*
*
* switch_core_video.h -- Core Video header
@ -35,32 +36,14 @@
opportunity to thank libvpx for all the awesome stuff it does and for making my life much easier.
*/
#ifndef SWITCH_VIDEO_H
#define SWITCH_VIDEO_H
#include "vpx/vpx_image.h"
#include "vpx/vpx_integer.h"
#include <switch.h>
SWITCH_BEGIN_EXTERN_C
#define SWITCH_IMG_FMT_PLANAR VPX_IMG_FMT_PLANAR
#define SWITCH_IMG_FMT_UV_FLIP VPX_IMG_FMT_UV_FLIP
#define SWITCH_IMG_FMT_HAS_ALPHA VPX_IMG_FMT_HAS_ALPHA
#define SWITCH_PLANE_PACKED VPX_PLANE_PACKED
#define SWITCH_PLANE_Y VPX_PLANE_Y
#define SWITCH_PLANE_U VPX_PLANE_U
#define SWITCH_PLANE_V VPX_PLANE_V
#define SWITCH_PLANE_ALPHA VPX_PLANE_ALPHA
#ifndef VPX_IMG_FMT_HIGH /* not available in libvpx 1.3.0 (see commit hash e97aea28) */
#define VPX_IMG_FMT_HIGH 0x800 /**< Image uses 16bit framebuffer */
#endif
#define SWITCH_IMG_FMT_HIGH VPX_IMG_FMT_HIGH
#define SWITCH_IMG_FMT_I420 VPX_IMG_FMT_I420
typedef struct switch_yuv_color_s {
uint8_t y;
uint8_t u;
@ -68,9 +51,6 @@ typedef struct switch_yuv_color_s {
} switch_yuv_color_t;
typedef vpx_img_fmt_t switch_img_fmt_t;
typedef vpx_image_t switch_image_t;
/**\brief Representation of a rectangle on a surface */
typedef struct switch_image_rect {
@ -80,6 +60,7 @@ typedef struct switch_image_rect {
unsigned int h; /**< height */
} switch_image_rect_t;
/*!\brief Open a descriptor, allocating storage for the underlying image
*
* Returns a descriptor for storing an image of the given format. The
@ -193,7 +174,16 @@ SWITCH_DECLARE(void) switch_img_fill(switch_image_t *img, int x, int y, int w, i
SWITCH_DECLARE(void) switch_img_draw_pixel(switch_image_t *img, int x, int y, switch_yuv_color_t color);
SWITCH_DECLARE(void) switch_color_set(switch_yuv_color_t *color, char *color_str);
SWITCH_DECLARE(void) switch_color_set(switch_yuv_color_t *color, const char *color_str);
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_create(switch_img_txt_handle_t **handleP, const char *font_family,
const char *font_color, uint16_t font_size, double angle, switch_memory_pool_t *pool);
SWITCH_DECLARE(void) switch_img_txt_handle_destroy(switch_img_txt_handle_t **handleP);
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_handle_t *handle, switch_image_t *img,
int x, int y, const char *text,
const char *font_family, const char *font_color, uint16_t font_size, double angle);
/** @} */

6
src/include/switch_types.h
View File

@ -40,7 +40,7 @@
#include <switch.h>
#include <switch_json.h>
#include <switch_core_video.h>
#include <switch_vpx.h>
SWITCH_BEGIN_EXTERN_C
#define SWITCH_ENT_ORIGINATE_DELIM ":_:"
@ -2215,8 +2215,6 @@ typedef switch_status_t (*switch_core_codec_control_func_t) (switch_codec_t *cod
void **ret_data);
typedef switch_status_t (*switch_image_write_callback_t) (switch_core_session_t *session, switch_frame_t *frame, switch_image_t *img, void *user_data);
typedef switch_status_t (*switch_core_codec_init_func_t) (switch_codec_t *, switch_codec_flag_t, const switch_codec_settings_t *codec_settings);
typedef switch_status_t (*switch_core_codec_fmtp_parse_func_t) (const char *fmtp, switch_codec_fmtp_t *codec_fmtp);
typedef switch_status_t (*switch_core_codec_destroy_func_t) (switch_codec_t *);
@ -2501,6 +2499,8 @@ typedef struct switch_waitlist_s {
struct switch_vb_s;
typedef struct switch_vb_s switch_vb_t;
struct switch_img_txt_handle_s;
typedef struct switch_img_txt_handle_s switch_img_txt_handle_t;
SWITCH_END_EXTERN_C
#endif

119
src/include/switch_utf8.h Normal file
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@ -0,0 +1,119 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Seven Du <dujinfang@gmail.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Anthony Minessale II <anthm@freeswitch.org>
*
*
* switch_utf8.h UTf8
*
*/
/*
Basic UTF-8 manipulation routines
by Jeff Bezanson
placed in the public domain Fall 2005
This code is designed to provide the utilities you need to manipulate
UTF-8 as an internal string encoding. These functions do not perform the
error checking normally needed when handling UTF-8 data, so if you happen
to be from the Unicode Consortium you will want to flay me alive.
I do this because error checking can be performed at the boundaries (I/O),
with these routines reserved for higher performance on data known to be
valid.
*/
#include <switch.h>
/* is c the start of a utf8 sequence? */
#define isutf(c) (((c)&0xC0)!=0x80)
/* convert UTF-8 data to wide character */
SWITCH_DECLARE(int) switch_u8_toucs(uint32_t *dest, int sz, char *src, int srcsz);
/* the opposite conversion */
SWITCH_DECLARE(int) switch_u8_toutf8(char *dest, int sz, uint32_t *src, int srcsz);
/* single character to UTF-8 */
SWITCH_DECLARE(int) switch_u8_wc_toutf8(char *dest, uint32_t ch);
/* character number to byte offset */
SWITCH_DECLARE(int) switch_u8_offset(char *str, int charnum);
/* byte offset to character number */
SWITCH_DECLARE(int) switch_u8_charnum(char *s, int offset);
/* return next character, updating an index variable */
SWITCH_DECLARE(uint32_t) switch_u8_nextchar(char *s, int *i);
/* move to next character */
SWITCH_DECLARE(void) switch_u8_inc(char *s, int *i);
/* move to previous character */
SWITCH_DECLARE(void) switch_u8_dec(char *s, int *i);
/* returns length of next utf-8 sequence */
SWITCH_DECLARE(int) switch_u8_seqlen(char *s);
/* assuming src points to the character after a backslash, read an
escape sequence, storing the result in dest and returning the number of
input characters processed */
SWITCH_DECLARE(int) switch_u8_read_escape_sequence(char *src, uint32_t *dest);
/* given a wide character, convert it to an ASCII escape sequence stored in
buf, where buf is "sz" bytes. returns the number of characters output.*/
SWITCH_DECLARE(int) switch_u8_escape_wchar(char *buf, int sz, uint32_t ch);
/* convert a string "src" containing escape sequences to UTF-8 */
SWITCH_DECLARE(int) switch_u8_unescape(char *buf, int sz, char *src);
/* convert UTF-8 "src" to ASCII with escape sequences.
if escape_quotes is nonzero, quote characters will be preceded by
backslashes as well. */
SWITCH_DECLARE(int) switch_u8_escape(char *buf, int sz, char *src, int escape_quotes);
/* utility predicates used by the above */
int octal_digit(char c);
int hex_digit(char c);
/* return a pointer to the first occurrence of ch in s, or NULL if not
found. character index of found character returned in *charn. */
SWITCH_DECLARE(char *) switch_u8_strchr(char *s, uint32_t ch, int *charn);
/* same as the above, but searches a buffer of a given size instead of
a NUL-terminated string. */
SWITCH_DECLARE(char *) switch_u8_memchr(char *s, uint32_t ch, size_t sz, int *charn);
/* count the number of characters in a UTF-8 string */
SWITCH_DECLARE(int) switch_u8_strlen(char *s);
SWITCH_DECLARE(int) switch_u8_is_locale_utf8(char *locale);
/* printf where the format string and arguments may be in UTF-8.
you can avoid this function and just use ordinary printf() if the current
locale is UTF-8. */
SWITCH_DECLARE(int) switch_u8_vprintf(char *fmt, va_list ap);
SWITCH_DECLARE(int) switch_u8_printf(char *fmt, ...);
SWITCH_DECLARE(uint32_t) switch_u8_get_char(char *s, int *i);

84
src/include/switch_vpx.h Normal file
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@ -0,0 +1,84 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Seven Du <dujinfang@gmail.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
*
* switch_vpx.h -- vpx resources
*
*/
/*! \file switch_vpx.h
\brief vpx resources
The things powered by libvpx are renamed into the switch_ namespace to provide a cleaner
look to things and helps me to document what parts of video I am using I'd like to take this
opportunity to thank libvpx for all the awesome stuff it does and for making my life much easier.
*/
#ifndef SWITCH_VPX_H
#define SWITCH_VPX_H
#include <switch.h>
#include "vpx/vpx_image.h"
#include "vpx/vpx_integer.h"
SWITCH_BEGIN_EXTERN_C
#define SWITCH_IMG_FMT_PLANAR VPX_IMG_FMT_PLANAR
#define SWITCH_IMG_FMT_UV_FLIP VPX_IMG_FMT_UV_FLIP
#define SWITCH_IMG_FMT_HAS_ALPHA VPX_IMG_FMT_HAS_ALPHA
#define SWITCH_PLANE_PACKED VPX_PLANE_PACKED
#define SWITCH_PLANE_Y VPX_PLANE_Y
#define SWITCH_PLANE_U VPX_PLANE_U
#define SWITCH_PLANE_V VPX_PLANE_V
#define SWITCH_PLANE_ALPHA VPX_PLANE_ALPHA
#ifndef VPX_IMG_FMT_HIGH /* not available in libvpx 1.3.0 (see commit hash e97aea28) */
#define VPX_IMG_FMT_HIGH 0x800 /**< Image uses 16bit framebuffer */
#endif
#define SWITCH_IMG_FMT_HIGH VPX_IMG_FMT_HIGH
#define SWITCH_IMG_FMT_I420 VPX_IMG_FMT_I420
typedef vpx_img_fmt_t switch_img_fmt_t;
typedef vpx_image_t switch_image_t;
SWITCH_END_EXTERN_C
#endif
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
*/

295
src/mod/applications/mod_conference/mod_conference.c
View File

@ -358,8 +358,14 @@ typedef struct mcu_layer_s {
int member_id;
int idx;
int tagged;
int screen_w;
int screen_h;
int x_pos;
int y_pos;
switch_image_t *img;
switch_image_t *cur_img;
switch_image_t *banner_img;
switch_img_txt_handle_t *txthandle;
} mcu_layer_t;
typedef struct mcu_canvas_s {
@ -702,132 +708,6 @@ typedef struct layout_group_s {
} layout_group_t;
#include "utf8.h"
static const u_int32_t offsetsFromUTF8[6] = {
0x00000000UL, 0x00003080UL, 0x000E2080UL,
0x03C82080UL, 0xFA082080UL, 0x82082080UL
};
/* reads the next utf-8 sequence out of a string, updating an index */
uint32_t get_utf8_char(char *s, int *i)
{
u_int32_t ch = 0;
int sz = 0;
do {
ch <<= 6;
ch += (unsigned char)s[(*i)++];
sz++;
} while (s[*i] && !isutf(s[*i]));
ch -= offsetsFromUTF8[sz-1];
return ch;
}
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
static void draw_bitmap(switch_image_t *img, FT_Bitmap* bitmap, FT_Int x, FT_Int y, switch_yuv_color_t color)
{
FT_Int i, j, p, q;
FT_Int x_max = x + bitmap->width;
FT_Int y_max = y + bitmap->rows;
switch (bitmap->pixel_mode) {
case FT_PIXEL_MODE_GRAY: // it should always be GRAY since we use FT_LOAD_RENDER?
break;
case FT_PIXEL_MODE_NONE:
case FT_PIXEL_MODE_MONO:
case FT_PIXEL_MODE_GRAY2:
case FT_PIXEL_MODE_GRAY4:
case FT_PIXEL_MODE_LCD:
case FT_PIXEL_MODE_LCD_V:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "unsupported pixel mode %d\n", bitmap->pixel_mode);
return;
}
for ( i = x, p = 0; i < x_max; i++, p++ ) {
for ( j = y, q = 0; j < y_max; j++, q++ ) {
if ( i < 0 || j < 0 || i >= img->d_w || j >= img->d_h) continue;
if (bitmap->buffer[q * bitmap->width + p] > 128) {
switch_img_draw_pixel(img, i, j, color);
}
}
}
}
SWITCH_DECLARE(void) switch_img_draw_text(switch_image_t *img, int x, int y, switch_yuv_color_t color, uint16_t font_size, char *text)
{
FT_Library library;
FT_Face face;
FT_GlyphSlot slot;
FT_Matrix matrix; /* transformation matrix */
FT_Vector pen; /* untransformed origin */
FT_Error error;
// char* font_family = "/usr/local/freeswitch/SimHei.ttf";
char* font_family = "/usr/local/freeswitch/Arial.ttf";
double angle;
int target_height;
int index = 0;
FT_ULong ch;
if (zstr(text)) return;
angle = 0; // (45.0 / 360 ) * 3.14159 * 2;
target_height = img->d_h;
error = FT_Init_FreeType( &library ); /* initialize library */
if (error) return;
error = FT_New_Face(library, font_family, 0, &face); /* create face object */
if (error) return;
/* use 50pt at 100dpi */
error = FT_Set_Char_Size(face, 64 * font_size, 0, 96, 96); /* set character size */
if (error) return;
slot = face->glyph;
/* set up matrix */
matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
pen.x = x * 64;
pen.y = (target_height - y) * 64;
while(*(text + index)) {
ch = get_utf8_char(text, &index);
if (ch == '\n') {
pen.x = x * 64;
pen.y -= (font_size + font_size / 4) * 64;
continue;
}
/* set transformation */
FT_Set_Transform(face, &matrix, &pen);
/* load glyph image into the slot (erase previous one) */
error = FT_Load_Char(face, ch, FT_LOAD_RENDER);
if (error) continue;
/* now, draw to our target surface (convert position) */
draw_bitmap(img, &slot->bitmap, slot->bitmap_left, target_height - slot->bitmap_top + font_size, color);
/* increment pen position */
pen.x += slot->advance.x;
pen.y += slot->advance.y;
}
FT_Done_Face(face);
FT_Done_FreeType(library);
}
static void conference_parse_layouts(conference_obj_t *conference)
{
@ -1021,32 +901,22 @@ static void reset_image(switch_image_t *img, switch_yuv_color_t *color)
static void reset_layer(mcu_canvas_t *canvas, mcu_layer_t *layer)
{
int x = 0, y = 0;
int screen_w = 0, screen_h = 0;
layer->tagged = 0;
screen_w = canvas->img->d_w * layer->geometry.scale / SCALE_FACTOR;
screen_h = canvas->img->d_h * layer->geometry.scale / SCALE_FACTOR;
switch_img_free(&layer->banner_img);
if (screen_w % 2) screen_w++; // round to even
if (screen_h % 2) screen_h++; // round to even
x = canvas->img->d_w * layer->geometry.x / SCALE_FACTOR;
y = canvas->img->d_h * layer->geometry.y / SCALE_FACTOR;
if (layer->img && (layer->img->d_w != screen_w || layer->img->d_h != screen_h)) {
if (layer->img && (layer->img->d_w != layer->screen_w || layer->img->d_h != layer->screen_h)) {
switch_img_free(&layer->img);
}
if (!layer->img) {
layer->img = switch_img_alloc(NULL, SWITCH_IMG_FMT_I420, screen_w, screen_h, 1);
layer->img = switch_img_alloc(NULL, SWITCH_IMG_FMT_I420, layer->screen_w, layer->screen_h, 1);
}
switch_assert(layer->img);
reset_image(layer->img, &canvas->bgcolor);
switch_img_patch(canvas->img, layer->img, x, y);
switch_img_patch(canvas->img, layer->img, layer->x_pos, layer->y_pos);
switch_img_free(&layer->cur_img);
}
@ -1054,29 +924,27 @@ static void reset_layer(mcu_canvas_t *canvas, mcu_layer_t *layer)
static void scale_and_patch(conference_obj_t *conference, mcu_layer_t *layer)
{
int ret;
int x = 0, y = 0;
switch_image_t *IMG = conference->canvas->img, *img = layer->cur_img;
if (layer->geometry.scale) {
int screen_w = 0, screen_h = 0, img_w = 0, img_h = 0;
int img_w = 0, img_h = 0;
double screen_aspect = 0, img_aspect = 0;
img_w = layer->screen_w = IMG->d_w * layer->geometry.scale / SCALE_FACTOR;
img_h = layer->screen_h = IMG->d_h * layer->geometry.scale / SCALE_FACTOR;
img_w = screen_w = IMG->d_w * layer->geometry.scale / SCALE_FACTOR;
img_h = screen_h = IMG->d_h * layer->geometry.scale / SCALE_FACTOR;
layer->x_pos = IMG->d_w * layer->geometry.x / SCALE_FACTOR;
layer->y_pos = IMG->d_h * layer->geometry.y / SCALE_FACTOR;
x = IMG->d_w * layer->geometry.x / SCALE_FACTOR;
y = IMG->d_h * layer->geometry.y / SCALE_FACTOR;
screen_aspect = (double) screen_w / screen_h;
screen_aspect = (double) layer->screen_w / layer->screen_h;
img_aspect = (double) img->d_w / img->d_h;
if (screen_aspect > img_aspect) {
img_w = img_aspect * screen_h;
x += (screen_w - img_w) / 2;
img_w = img_aspect * layer->screen_h;
layer->x_pos += (layer->screen_w - img_w) / 2;
} else if (screen_aspect < img_aspect) {
img_h = screen_w / img_aspect;
y += (screen_h - img_h) / 2;
img_h = layer->screen_w / img_aspect;
layer->y_pos += (layer->screen_h - img_h) / 2;
}
@ -1121,11 +989,15 @@ static void scale_and_patch(conference_obj_t *conference, mcu_layer_t *layer)
// reserv the bottom room for text, e.g. caller id
// switch_img_set_rect(layer->img, 0, 0, layer->img->d_w, layer->img->d_h - 20);
}
switch_img_patch(IMG, layer->img, x, y);
switch_img_patch(IMG, layer->img, layer->x_pos, layer->y_pos);
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "insert at %d,%d\n", x, y);
switch_img_patch(IMG, img, x, y);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "insert at %d,%d\n", 0, 0);
switch_img_patch(IMG, img, 0, 0);
}
if (layer->banner_img) {
switch_img_patch(IMG, layer->banner_img, layer->x_pos, layer->y_pos + (layer->screen_h - layer->banner_img->d_h));
}
}
@ -1165,6 +1037,10 @@ static void detach_video_layer(conference_member_t *member)
conf_api_sub_position(member, NULL, "0:0:0");
}
if (layer->txthandle) {
switch_img_txt_handle_destroy(&layer->txthandle);
}
reset_layer(member->conference->canvas, layer);
layer->member_id = 0;
member->video_layer_id = -1;
@ -1172,13 +1048,74 @@ static void detach_video_layer(conference_member_t *member)
switch_mutex_unlock(member->conference->canvas->mutex);
}
static void layer_set_banner(mcu_layer_t *layer, const char *text)
{
switch_yuv_color_t fgcolor, bgcolor;
int font_size = 24;
const char *fg = "#cccccc";
const char *bg = "#142e55";
char *parsed = NULL;
switch_event_t *params = NULL;
const char *font_face = "/usr/share/fonts/truetype/freefont/FreeSansOblique.ttf";
const char *var;
if (*text == '{') {
if (switch_event_create_brackets((char *)text, '{', '}', ',', &params, &parsed, SWITCH_FALSE) != SWITCH_STATUS_SUCCESS || !parsed) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Parse Error!\n");
} else {
text = parsed;
}
}
if (params) {
if ((var = switch_event_get_header(params, "fg"))) {
fg = var;
}
if ((var = switch_event_get_header(params, "bg"))) {
bg = var;
}
if ((var = switch_event_get_header(params, "font_face"))) {
font_face = var;
}
if ((var = switch_event_get_header(params, "font_size"))) {
int tmp = atoi(var);
if (tmp >= 5 && tmp <= 50) {
font_size = tmp;
}
}
}
switch_color_set(&fgcolor, fg);
switch_color_set(&bgcolor, bg);
switch_img_free(&layer->banner_img);
layer->banner_img = switch_img_alloc(NULL, SWITCH_IMG_FMT_I420, layer->screen_w, font_size * 2, 1);
if (layer->txthandle) {
switch_img_txt_handle_destroy(&layer->txthandle);
}
switch_img_txt_handle_create(&layer->txthandle, font_face, fg, font_size, 0, NULL);
reset_image(layer->banner_img, &bgcolor);
switch_img_txt_handle_render(layer->txthandle, layer->banner_img, font_size / 2, font_size / 2, text, NULL, NULL, 0, 0);
switch_safe_free(parsed);
if (params) switch_event_destroy(&params);
}
static switch_status_t attach_video_layer(conference_member_t *member, int idx)
{
mcu_layer_t *layer = NULL;
switch_channel_t *channel = NULL;
const char *res_id = NULL;
switch_status_t status = SWITCH_STATUS_SUCCESS;
const char *banner = NULL;
if (!member->session) abort();
switch_mutex_lock(member->conference->canvas->mutex);
@ -1206,6 +1143,10 @@ static switch_status_t attach_video_layer(conference_member_t *member, int idx)
}
}
if ((banner = switch_channel_get_variable_dup(channel, "video_banner_text", SWITCH_FALSE, -1))) {
layer_set_banner(layer, banner);
}
layer->member_id = member->id;
member->video_layer_id = idx;
check_used_layers(member->conference);
@ -1239,6 +1180,17 @@ static void init_canvas_layers(conference_obj_t *conference, video_layout_t *vla
layer->geometry.floor = vlayout->images[i].floor;
layer->idx = i;
layer->screen_w = conference->canvas->img->d_w * layer->geometry.scale / SCALE_FACTOR;
layer->screen_h = conference->canvas->img->d_h * layer->geometry.scale / SCALE_FACTOR;
if (layer->screen_w % 2) layer->screen_w++; // round to even
if (layer->screen_h % 2) layer->screen_h++; // round to even
layer->x_pos = conference->canvas->img->d_w * layer->geometry.x / SCALE_FACTOR;
layer->y_pos = conference->canvas->img->d_h * layer->geometry.y / SCALE_FACTOR;
if (layer->geometry.floor) {
conference->canvas->layout_floor_id = i;
}
@ -1570,18 +1522,24 @@ static void *SWITCH_THREAD_FUNC conference_video_muxing_thread_run(switch_thread
}
}
if (1) {
if (0) {
switch_img_txt_handle_t *txthandle = NULL;
switch_yuv_color_t color;
switch_color_set(&color, "#FFFFFF");
switch_img_draw_text(conference->canvas->img, 10, 10, color, 12, "AVA 123 你好 FreeSWITCH\nFreeSWITCH Rocks!");
switch_img_draw_text(conference->canvas->img, 10, 40, color, 16, "AVA 123 你好 FreeSWITCH\nFreeSWITCH Rocks!");
switch_img_draw_text(conference->canvas->img, 10, 80, color, 24, "AVA 123 你好 FreeSWITCH\nFreeSWITCH Rocks!");
switch_img_draw_text(conference->canvas->img, 10, 160, color, 36, "AVA 123 你好 FreeSWITCH\nFreeSWITCH Rocks!");
switch_img_draw_text(conference->canvas->img, 10, 300, color, 72, "AVA 123 你好 FreeSWITCH\nFreeSWITCH Rocks!");
switch_img_fill(conference->canvas->img, 300, 10, 400, 40, color);
switch_img_txt_handle_create(&txthandle, "/usr/share/fonts/truetype/Microsoft/Verdana.ttf",
"#FFFFFF", 24, 0, NULL);
switch_img_txt_handle_render(txthandle, conference->canvas->img, 10, 10, "W00t this works!", NULL, NULL, 0, 0);
switch_color_set(&color, "#FF0000");
switch_img_draw_text(conference->canvas->img, 300, 10, color, 32, "FreeSWITCH");
switch_img_fill(conference->canvas->img, 300, 10, 400, 40, color);
switch_img_txt_handle_render(txthandle, conference->canvas->img, 300, 22, "W00t this works!", NULL, NULL, 0, 0);
switch_img_txt_handle_destroy(&txthandle);
//switch_img_draw_text(conference->canvas->img, 300, 10, color, 32, "FreeSWITCH");
}
if (used) {
@ -1654,6 +1612,11 @@ static void *SWITCH_THREAD_FUNC conference_video_muxing_thread_run(switch_thread
switch_img_free(&layer->cur_img);
switch_img_free(&layer->img);
switch_img_free(&layer->banner_img);
if (layer->txthandle) {
switch_img_txt_handle_destroy(&layer->txthandle);
}
}
for (i = 0; write_codecs[i] && switch_core_codec_ready(&write_codecs[i]->codec) && i < MAX_MUX_CODECS; i++) {

197
src/switch_core_video.c
View File

@ -22,6 +22,7 @@
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Anthony Minessale II <anthm@freeswitch.org>
*
*
* switch_core_video.c -- Core Video
@ -29,6 +30,7 @@
*/
#include <switch.h>
#include <switch_utf8.h>
SWITCH_DECLARE(switch_image_t *)switch_img_alloc(switch_image_t *img,
@ -247,7 +249,7 @@ SWITCH_DECLARE(void) switch_img_add_text(void *buffer, int w, int x, int y, char
}
}
SWITCH_DECLARE(void) switch_color_set(switch_yuv_color_t *color, char *color_str)
SWITCH_DECLARE(void) switch_color_set(switch_yuv_color_t *color, const char *color_str)
{
uint8_t y = 134;
uint8_t u = 128;
@ -256,8 +258,13 @@ SWITCH_DECLARE(void) switch_color_set(switch_yuv_color_t *color, char *color_str
if (color_str != NULL && strlen(color_str) == 7) {
uint8_t red, green, blue;
char str[7];
int i;
color_str++;
strncpy(str, color_str, 6);
for(i = 0; i < 6; i++) {
str[i] = switch_toupper(str[i]);
}
red = (str[0] >= 'A' ? (str[0] - 'A' + 10) * 16 : (str[0] - '0') * 16) + (str[1] >= 'A' ? (str[1] - 'A' + 10) : (str[0] - '0'));
green = (str[2] >= 'A' ? (str[2] - 'A' + 10) * 16 : (str[2] - '0') * 16) + (str[3] >= 'A' ? (str[3] - 'A' + 10) : (str[0] - '0'));
blue = (str[4] >= 'A' ? (str[4] - 'A' + 10) * 16 : (str[4] - '0') * 16) + (str[5] >= 'A' ? (str[5] - 'A' + 10) : (str[0] - '0'));
@ -273,6 +280,194 @@ SWITCH_DECLARE(void) switch_color_set(switch_yuv_color_t *color, char *color_str
color->v = v;
}
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
struct switch_img_txt_handle_s {
FT_Library library;
FT_Face face;
char *font_family;
double angle;
uint16_t font_size;
switch_yuv_color_t color;
switch_image_t *img;
switch_memory_pool_t *pool;
int free_pool;
};
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_create(switch_img_txt_handle_t **handleP, const char *font_family,
const char *font_color, uint16_t font_size, double angle, switch_memory_pool_t *pool)
{
int free_pool = 0;
switch_img_txt_handle_t *new_handle;
if (!pool) {
free_pool = 1;
switch_core_new_memory_pool(&pool);
}
new_handle = switch_core_alloc(pool, sizeof(*new_handle));
if (FT_Init_FreeType(&new_handle->library)) {
return SWITCH_STATUS_FALSE;
}
new_handle->pool = pool;
new_handle->free_pool = free_pool;
new_handle->font_family = switch_core_strdup(new_handle->pool, font_family);
new_handle->font_size = font_size;
new_handle->angle = angle;
switch_color_set(&new_handle->color, font_color);
*handleP = new_handle;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(void) switch_img_txt_handle_destroy(switch_img_txt_handle_t **handleP)
{
switch_img_txt_handle_t *old_handle = *handleP;
switch_memory_pool_t *pool;
*handleP = NULL;
if (old_handle->library) {
FT_Done_FreeType(old_handle->library);
old_handle->library = NULL;
}
pool = old_handle->pool;
if (old_handle->free_pool) {
switch_core_destroy_memory_pool(&pool);
pool = NULL;
old_handle = NULL;
}
}
static void draw_bitmap(switch_image_t *img, FT_Bitmap* bitmap, FT_Int x, FT_Int y, switch_yuv_color_t color)
{
FT_Int i, j, p, q;
FT_Int x_max = x + bitmap->width;
FT_Int y_max = y + bitmap->rows;
switch (bitmap->pixel_mode) {
case FT_PIXEL_MODE_GRAY: // it should always be GRAY since we use FT_LOAD_RENDER?
break;
case FT_PIXEL_MODE_NONE:
case FT_PIXEL_MODE_MONO:
case FT_PIXEL_MODE_GRAY2:
case FT_PIXEL_MODE_GRAY4:
case FT_PIXEL_MODE_LCD:
case FT_PIXEL_MODE_LCD_V:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "unsupported pixel mode %d\n", bitmap->pixel_mode);
return;
}
for ( i = x, p = 0; i < x_max; i++, p++ ) {
for ( j = y, q = 0; j < y_max; j++, q++ ) {
if ( i < 0 || j < 0 || i >= img->d_w || j >= img->d_h) continue;
if (bitmap->buffer[q * bitmap->width + p] > 128) {
switch_img_draw_pixel(img, i, j, color);
}
}
}
}
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_handle_t *handle, switch_image_t *img,
int x, int y, const char *text,
const char *font_family, const char *font_color, uint16_t font_size, double angle)
{
FT_GlyphSlot slot;
FT_Matrix matrix; /* transformation matrix */
FT_Vector pen; /* untransformed origin */
FT_Error error;
int target_height;
int index = 0;
FT_ULong ch;
FT_Face face;
if (zstr(text)) return SWITCH_STATUS_FALSE;
if (font_family) {
handle->font_family = switch_core_strdup(handle->pool, font_family);
} else {
font_family = handle->font_family;
}
if (font_size) {
handle->font_size = font_size;
} else {
font_size = handle->font_size;
}
if (font_color) {
switch_color_set(&handle->color, font_color);
}
handle->angle = angle;
//angle = 0; (45.0 / 360 ) * 3.14159 * 2;
target_height = img->d_h;
error = FT_New_Face(handle->library, font_family, 0, &face); /* create face object */
if (error) {printf("WTF %s %d\n", font_family, __LINE__); return SWITCH_STATUS_FALSE;}
/* use 50pt at 100dpi */
error = FT_Set_Char_Size(face, 64 * font_size, 0, 96, 96); /* set character size */
if (error) {printf("WTF %d\n", __LINE__); return SWITCH_STATUS_FALSE;}
slot = face->glyph;
/* set up matrix */
matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
pen.x = x * 64;
pen.y = (target_height - y) * 64;
while(*(text + index)) {
ch = switch_u8_get_char((char *)text, &index);
if (ch == '\n') {
pen.x = x * 64;
pen.y -= (font_size + font_size / 4) * 64;
continue;
}
/* set transformation */
FT_Set_Transform(face, &matrix, &pen);
/* load glyph image into the slot (erase previous one) */
error = FT_Load_Char(face, ch, FT_LOAD_RENDER);
if (error) continue;
/* now, draw to our target surface (convert position) */
draw_bitmap(img, &slot->bitmap, slot->bitmap_left, target_height - slot->bitmap_top + font_size, handle->color);
/* increment pen position */
pen.x += slot->advance.x;
pen.y += slot->advance.y;
}
FT_Done_Face(face);
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c

516
src/switch_utf8.c Normal file
View File

@ -0,0 +1,516 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Seven Du <dujinfang@gmail.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Anthony Minessale II <anthm@freeswitch.org>
*
*
* switch_utf8.c UTf8
*
*/
#include "switch_utf8.h"
/*
Basic UTF-8 manipulation routines
by Jeff Bezanson
placed in the public domain Fall 2005
This code is designed to provide the utilities you need to manipulate
UTF-8 as an internal string encoding. These functions do not perform the
error checking normally needed when handling UTF-8 data, so if you happen
to be from the Unicode Consortium you will want to flay me alive.
I do this because error checking can be performed at the boundaries (I/O),
with these routines reserved for higher performance on data known to be
valid.
*/
static const uint32_t offsetsFromUTF8[6] = {
0x00000000UL, 0x00003080UL, 0x000E2080UL,
0x03C82080UL, 0xFA082080UL, 0x82082080UL
};
static const char trailingBytesForUTF8[256] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
};
/* returns length of next utf-8 sequence */
SWITCH_DECLARE(int) switch_u8_seqlen(char *s)
{
return trailingBytesForUTF8[(unsigned int)(unsigned char)s[0]] + 1;
}
/* conversions without error checking
only works for valid UTF-8, i.e. no 5- or 6-byte sequences
srcsz = source size in bytes, or -1 if 0-terminated
sz = dest size in # of wide characters
returns # characters converted
dest will always be L'\0'-terminated, even if there isn't enough room
for all the characters.
if sz = srcsz+1 (i.e. 4*srcsz+4 bytes), there will always be enough space.
*/
SWITCH_DECLARE(int) switch_u8_toucs(uint32_t *dest, int sz, char *src, int srcsz)
{
uint32_t ch;
char *src_end = src + srcsz;
int nb;
int i=0;
while (i < sz-1) {
nb = trailingBytesForUTF8[(unsigned char)*src];
if (srcsz == -1) {
if (*src == 0)
goto done_toucs;
}
else {
if (src + nb >= src_end)
goto done_toucs;
}
ch = 0;
switch (nb) {
/* these fall through deliberately */
case 3: ch += (unsigned char)*src++; ch <<= 6;
case 2: ch += (unsigned char)*src++; ch <<= 6;
case 1: ch += (unsigned char)*src++; ch <<= 6;
case 0: ch += (unsigned char)*src++;
}
ch -= offsetsFromUTF8[nb];
dest[i++] = ch;
}
done_toucs:
dest[i] = 0;
return i;
}
/* srcsz = number of source characters, or -1 if 0-terminated
sz = size of dest buffer in bytes
returns # characters converted
dest will only be '\0'-terminated if there is enough space. this is
for consistency; imagine there are 2 bytes of space left, but the next
character requires 3 bytes. in this case we could NUL-terminate, but in
general we can't when there's insufficient space. therefore this function
only NUL-terminates if all the characters fit, and there's space for
the NUL as well.
the destination string will never be bigger than the source string.
*/
SWITCH_DECLARE(int) switch_u8_toutf8(char *dest, int sz, uint32_t *src, int srcsz)
{
uint32_t ch;
int i = 0;
char *dest_end = dest + sz;
while (srcsz<0 ? src[i]!=0 : i < srcsz) {
ch = src[i];
if (ch < 0x80) {
if (dest >= dest_end)
return i;
*dest++ = (char)ch;
}
else if (ch < 0x800) {
if (dest >= dest_end-1)
return i;
*dest++ = (ch>>6) | 0xC0;
*dest++ = (ch & 0x3F) | 0x80;
}
else if (ch < 0x10000) {
if (dest >= dest_end-2)
return i;
*dest++ = (ch>>12) | 0xE0;
*dest++ = ((ch>>6) & 0x3F) | 0x80;
*dest++ = (ch & 0x3F) | 0x80;
}
else if (ch < 0x110000) {
if (dest >= dest_end-3)
return i;
*dest++ = (ch>>18) | 0xF0;
*dest++ = ((ch>>12) & 0x3F) | 0x80;
*dest++ = ((ch>>6) & 0x3F) | 0x80;
*dest++ = (ch & 0x3F) | 0x80;
}
i++;
}
if (dest < dest_end)
*dest = '\0';
return i;
}
SWITCH_DECLARE(int) switch_u8_wc_toutf8(char *dest, uint32_t ch)
{
if (ch < 0x80) {
dest[0] = (char)ch;
return 1;
}
if (ch < 0x800) {
dest[0] = (ch>>6) | 0xC0;
dest[1] = (ch & 0x3F) | 0x80;
return 2;
}
if (ch < 0x10000) {
dest[0] = (ch>>12) | 0xE0;
dest[1] = ((ch>>6) & 0x3F) | 0x80;
dest[2] = (ch & 0x3F) | 0x80;
return 3;
}
if (ch < 0x110000) {
dest[0] = (ch>>18) | 0xF0;
dest[1] = ((ch>>12) & 0x3F) | 0x80;
dest[2] = ((ch>>6) & 0x3F) | 0x80;
dest[3] = (ch & 0x3F) | 0x80;
return 4;
}
return 0;
}
/* charnum => byte offset */
SWITCH_DECLARE(int) switch_u8_offset(char *str, int charnum)
{
int offs=0;
while (charnum > 0 && str[offs]) {
(void)(isutf(str[++offs]) || isutf(str[++offs]) ||
isutf(str[++offs]) || ++offs);
charnum--;
}
return offs;
}
/* byte offset => charnum */
SWITCH_DECLARE(int) switch_u8_charnum(char *s, int offset)
{
int charnum = 0, offs=0;
while (offs < offset && s[offs]) {
(void)(isutf(s[++offs]) || isutf(s[++offs]) ||
isutf(s[++offs]) || ++offs);
charnum++;
}
return charnum;
}
/* number of characters */
SWITCH_DECLARE(int) switch_u8_strlen(char *s)
{
int count = 0;
int i = 0;
while (switch_u8_nextchar(s, &i) != 0)
count++;
return count;
}
/* reads the next utf-8 sequence out of a string, updating an index */
SWITCH_DECLARE(uint32_t) switch_u8_nextchar(char *s, int *i)
{
uint32_t ch = 0;
int sz = 0;
do {
ch <<= 6;
ch += (unsigned char)s[(*i)++];
sz++;
} while (s[*i] && !isutf(s[*i]));
ch -= offsetsFromUTF8[sz-1];
return ch;
}
SWITCH_DECLARE(void) switch_u8_inc(char *s, int *i)
{
(void)(isutf(s[++(*i)]) || isutf(s[++(*i)]) ||
isutf(s[++(*i)]) || ++(*i));
}
SWITCH_DECLARE(void) switch_u8_dec(char *s, int *i)
{
(void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) ||
isutf(s[--(*i)]) || --(*i));
}
SWITCH_DECLARE(int) octal_digit(char c)
{
return (c >= '0' && c <= '7');
}
SWITCH_DECLARE(int) hex_digit(char c)
{
return ((c >= '0' && c <= '9') ||
(c >= 'A' && c <= 'F') ||
(c >= 'a' && c <= 'f'));
}
/* assumes that src points to the character after a backslash
returns number of input characters processed */
SWITCH_DECLARE(int) switch_u8_read_escape_sequence(char *str, uint32_t *dest)
{
uint32_t ch;
char digs[9]="\0\0\0\0\0\0\0\0";
int dno=0, i=1;
ch = (uint32_t)str[0]; /* take literal character */
if (str[0] == 'n')
ch = L'\n';
else if (str[0] == 't')
ch = L'\t';
else if (str[0] == 'r')
ch = L'\r';
else if (str[0] == 'b')
ch = L'\b';
else if (str[0] == 'f')
ch = L'\f';
else if (str[0] == 'v')
ch = L'\v';
else if (str[0] == 'a')
ch = L'\a';
else if (octal_digit(str[0])) {
i = 0;
do {
digs[dno++] = str[i++];
} while (octal_digit(str[i]) && dno < 3);
ch = strtol(digs, NULL, 8);
}
else if (str[0] == 'x') {
while (hex_digit(str[i]) && dno < 2) {
digs[dno++] = str[i++];
}
if (dno > 0)
ch = strtol(digs, NULL, 16);
}
else if (str[0] == 'u') {
while (hex_digit(str[i]) && dno < 4) {
digs[dno++] = str[i++];
}
if (dno > 0)
ch = strtol(digs, NULL, 16);
}
else if (str[0] == 'U') {
while (hex_digit(str[i]) && dno < 8) {
digs[dno++] = str[i++];
}
if (dno > 0)
ch = strtol(digs, NULL, 16);
}
*dest = ch;
return i;
}
/* convert a string with literal \uxxxx or \Uxxxxxxxx characters to UTF-8
example: u8_unescape(mybuf, 256, "hello\\u220e")
note the double backslash is needed if called on a C string literal */
SWITCH_DECLARE(int) switch_u8_unescape(char *buf, int sz, char *src)
{
int c=0, amt;
uint32_t ch;
char temp[4];
while (*src && c < sz) {
if (*src == '\\') {
src++;
amt = switch_u8_read_escape_sequence(src, &ch);
}
else {
ch = (uint32_t)*src;
amt = 1;
}
src += amt;
amt = switch_u8_wc_toutf8(temp, ch);
if (amt > sz-c)
break;
memcpy(&buf[c], temp, amt);
c += amt;
}
if (c < sz)
buf[c] = '\0';
return c;
}
SWITCH_DECLARE(int) switch_u8_escape_wchar(char *buf, int sz, uint32_t ch)
{
if (ch == L'\n')
return snprintf(buf, sz, "\\n");
else if (ch == L'\t')
return snprintf(buf, sz, "\\t");
else if (ch == L'\r')
return snprintf(buf, sz, "\\r");
else if (ch == L'\b')
return snprintf(buf, sz, "\\b");
else if (ch == L'\f')
return snprintf(buf, sz, "\\f");
else if (ch == L'\v')
return snprintf(buf, sz, "\\v");
else if (ch == L'\a')
return snprintf(buf, sz, "\\a");
else if (ch == L'\\')
return snprintf(buf, sz, "\\\\");
else if (ch < 32 || ch == 0x7f)
return snprintf(buf, sz, "\\x%hhX", (unsigned char)ch);
else if (ch > 0xFFFF)
return snprintf(buf, sz, "\\U%.8X", (uint32_t)ch);
else if (ch >= 0x80 && ch <= 0xFFFF)
return snprintf(buf, sz, "\\u%.4hX", (unsigned short)ch);
return snprintf(buf, sz, "%c", (char)ch);
}
SWITCH_DECLARE(int) switch_u8_escape(char *buf, int sz, char *src, int escape_quotes)
{
int c=0, i=0, amt;
while (src[i] && c < sz) {
if (escape_quotes && src[i] == '"') {
amt = snprintf(buf, sz - c, "\\\"");
i++;
}
else {
amt = switch_u8_escape_wchar(buf, sz - c, switch_u8_nextchar(src, &i));
}
c += amt;
buf += amt;
}
if (c < sz)
*buf = '\0';
return c;
}
SWITCH_DECLARE(char *) switch_u8_strchr(char *s, uint32_t ch, int *charn)
{
int i = 0, lasti=0;
uint32_t c;
*charn = 0;
while (s[i]) {
c = switch_u8_nextchar(s, &i);
if (c == ch) {
return &s[lasti];
}
lasti = i;
(*charn)++;
}
return NULL;
}
SWITCH_DECLARE(char *) switch_u8_memchr(char *s, uint32_t ch, size_t sz, int *charn)
{
int i = 0, lasti=0;
uint32_t c;
int csz;
*charn = 0;
while (i < sz) {
c = csz = 0;
do {
c <<= 6;
c += (unsigned char)s[i++];
csz++;
} while (i < sz && !isutf(s[i]));
c -= offsetsFromUTF8[csz-1];
if (c == ch) {
return &s[lasti];
}
lasti = i;
(*charn)++;
}
return NULL;
}
SWITCH_DECLARE(int) switch_u8_is_locale_utf8(char *locale)
{
/* this code based on libutf8 */
const char* cp = locale;
for (; *cp != '\0' && *cp != '@' && *cp != '+' && *cp != ','; cp++) {
if (*cp == '.') {
const char* encoding = ++cp;
for (; *cp != '\0' && *cp != '@' && *cp != '+' && *cp != ','; cp++)
;
if ((cp-encoding == 5 && !strncmp(encoding, "UTF-8", 5))
|| (cp-encoding == 4 && !strncmp(encoding, "utf8", 4)))
return 1; /* it's UTF-8 */
break;
}
}
return 0;
}
SWITCH_DECLARE(int) switch_u8_vprintf(char *fmt, va_list ap)
{
int cnt, sz=0;
char *buf;
uint32_t *wcs;
sz = 512;
buf = (char*)alloca(sz);
try_print:
cnt = vsnprintf(buf, sz, fmt, ap);
if (cnt >= sz) {
buf = (char*)alloca(cnt - sz + 1);
sz = cnt + 1;
goto try_print;
}
wcs = (uint32_t*)alloca((cnt+1) * sizeof(uint32_t));
cnt = switch_u8_toucs(wcs, cnt+1, buf, cnt);
printf("%ls", (wchar_t*)wcs);
return cnt;
}
SWITCH_DECLARE(int) switch_u8_printf(char *fmt, ...)
{
int cnt;
va_list args;
va_start(args, fmt);
cnt = switch_u8_vprintf(fmt, args);
va_end(args);
return cnt;
}
/* reads the next utf-8 sequence out of a string, updating an index */
SWITCH_DECLARE(uint32_t) switch_u8_get_char(char *s, int *i)
{
u_int32_t ch = 0;
int sz = 0;
do {
ch <<= 6;
ch += (unsigned char)s[(*i)++];
sz++;
} while (s[*i] && !isutf(s[*i]));
ch -= offsetsFromUTF8[sz-1];
return ch;
}