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[300/906] use libpng in glpixbufoverlay filter.

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This commit is contained in:
Julien Isorce 2009-01-22 02:19:31 +01:00 committed by Matthew Waters
parent 3b9456e384
commit 1f89d69c74
3 changed files with 125 additions and 32 deletions
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11
gst/gl/gstglbumper.c
View file

@ -37,8 +37,8 @@
#include "config.h"
#endif
#include "gstglbumper.h"
#include <png.h>
#include "gstglbumper.h"
#define GST_CAT_DEFAULT gst_gl_bumper_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
@ -154,16 +154,15 @@ gst_gl_bumper_init_resources (GstGLFilter *filter)
{
GstGLBumper *bumper = GST_GL_BUMPER (filter);
GstGLDisplay *display = filter->display;
GError *error = NULL;
png_structp png_ptr;
png_infop info_ptr;
unsigned int sig_read = 0;
guint sig_read = 0;
png_uint_32 width = 0;
png_uint_32 height = 0;
int bit_depth = 0;
int color_type = 0;
int interlace_type = 0;
gint bit_depth = 0;
gint color_type = 0;
gint interlace_type = 0;
png_FILE_p fp = NULL;
guint y = 0;
guchar *raw_data = NULL;

140
gst/gl/gstglpixbufoverlay.c
View file

@ -36,9 +36,9 @@
#include "config.h"
#endif
#include <png.h>
#include <gstglfilter.h>
#include <gstgleffectssources.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#define GST_TYPE_GL_PIXBUFOVERLAY (gst_gl_pixbufoverlay_get_type())
#define GST_GL_PIXBUFOVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_PIXBUFOVERLAY,GstGLPixbufOverlay))
@ -54,8 +54,8 @@ struct _GstGLPixbufOverlay
gchar *location;
gboolean pbuf_has_changed;
GdkPixbuf *pixbuf;
gfloat width, height;
guchar *pixbuf;
gint width, height;
GLuint pbuftexture;
// gboolean stretch;
@ -89,6 +89,8 @@ static void gst_gl_pixbufoverlay_reset_resources (GstGLFilter* filter);
static gboolean gst_gl_pixbufoverlay_filter (GstGLFilter * filter,
GstGLBuffer * inbuf, GstGLBuffer * outbuf);
static gboolean gst_gl_pixbufoverlay_loader (GstGLFilter* filter);
static const GstElementDetails element_details = GST_ELEMENT_DETAILS (
"Gstreamer OpenGL PixbufOverlay",
"Filter/Effect",
@ -191,8 +193,8 @@ gst_gl_pixbufoverlay_draw_texture (GstGLPixbufOverlay * pixbufoverlay, GLuint te
if (pixbufoverlay->pbuftexture == 0) return;
// if (pixbufoverlay->stretch) {
width = pixbufoverlay->width;
height = pixbufoverlay->height;
width = (gfloat) pixbufoverlay->width;
height = (gfloat) pixbufoverlay->height;
// }
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@ -235,7 +237,7 @@ gst_gl_pixbufoverlay_init (GstGLPixbufOverlay * pixbufoverlay,
static void
gst_gl_pixbufoverlay_reset_resources (GstGLFilter* filter)
{
// GstGLPixbufOverlay* pixbufoverlay = GST_GL_PIXBUFOVERLAY(filter);
// GstGLPixbufOverlay* pixbufoverlay = GST_GL_PIXBUFOVERLAY(filter);
}
static void
@ -301,13 +303,17 @@ static void init_pixbuf_texture (GstGLDisplay *display, gpointer data)
{
GstGLPixbufOverlay *pixbufoverlay = GST_GL_PIXBUFOVERLAY (data);
glDeleteTextures (1, &pixbufoverlay->pbuftexture);
glGenTextures (1, &pixbufoverlay->pbuftexture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, pixbufoverlay->pbuftexture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
(gint)pixbufoverlay->width, (gint)pixbufoverlay->height, 0,
gdk_pixbuf_get_has_alpha (pixbufoverlay->pixbuf) ? GL_RGBA : GL_RGB,
GL_UNSIGNED_BYTE, gdk_pixbuf_get_pixels (pixbufoverlay->pixbuf));
if (pixbufoverlay->pixbuf) {
glDeleteTextures (1, &pixbufoverlay->pbuftexture);
glGenTextures (1, &pixbufoverlay->pbuftexture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, pixbufoverlay->pbuftexture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
(gint)pixbufoverlay->width, (gint)pixbufoverlay->height, 0,
GL_RGB, GL_UNSIGNED_BYTE, pixbufoverlay->pixbuf); //FIXME: RGBA
}
else
display->isAlive = FALSE;
}
static gboolean
@ -315,19 +321,20 @@ gst_gl_pixbufoverlay_filter (GstGLFilter* filter, GstGLBuffer* inbuf,
GstGLBuffer* outbuf)
{
GstGLPixbufOverlay* pixbufoverlay = GST_GL_PIXBUFOVERLAY(filter);
GError *error = NULL;
if (pixbufoverlay->pbuf_has_changed && (pixbufoverlay->location != NULL)) {
pixbufoverlay->pixbuf = gdk_pixbuf_new_from_file (pixbufoverlay->location, &error);
if (pixbufoverlay->pixbuf != NULL) {
pixbufoverlay->width = (gfloat) gdk_pixbuf_get_width (pixbufoverlay->pixbuf);
pixbufoverlay->height = (gfloat) gdk_pixbuf_get_height (pixbufoverlay->pixbuf);
if (pixbufoverlay->pixbuf) {
free (pixbufoverlay->pixbuf);
pixbufoverlay->pixbuf = NULL;
}
if (!gst_gl_pixbufoverlay_loader (filter))
pixbufoverlay->pixbuf = NULL;
/* if loader failed then display is turned off */
gst_gl_display_thread_add (filter->display, init_pixbuf_texture, pixbufoverlay);
gdk_pixbuf_unref (pixbufoverlay->pixbuf);
} else {
if (error != NULL && error->message != NULL)
g_warning ("unable to load %s: %s", pixbufoverlay->location, error->message);
}
pixbufoverlay->pbuf_has_changed = FALSE;
}
@ -336,3 +343,90 @@ gst_gl_pixbufoverlay_filter (GstGLFilter* filter, GstGLBuffer* inbuf,
return TRUE;
}
static void
user_warning_fn(png_structp png_ptr, png_const_charp warning_msg)
{
g_warning("%s\n", warning_msg);
}
#define LOAD_ERROR(msg) { GST_WARNING ("unable to load %s: %s", pixbufoverlay->location, msg); return FALSE; }
static gboolean
gst_gl_pixbufoverlay_loader (GstGLFilter* filter)
{
GstGLPixbufOverlay* pixbufoverlay = GST_GL_PIXBUFOVERLAY(filter);
GstGLDisplay *display = filter->display;
png_structp png_ptr;
png_infop info_ptr;
guint sig_read = 0;
png_uint_32 width = 0;
png_uint_32 height = 0;
gint bit_depth = 0;
gint color_type = 0;
gint interlace_type = 0;
png_FILE_p fp = NULL;
guint y = 0;
guchar **rows = NULL;
if (!filter->display)
return TRUE;
if ((fp = fopen(pixbufoverlay->location, "rb")) == NULL)
LOAD_ERROR ("file not found");
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (png_ptr == NULL)
{
fclose(fp);
LOAD_ERROR ("failed to initialize the png_struct");
}
png_set_error_fn (png_ptr, NULL, NULL, user_warning_fn);
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL)
{
fclose(fp);
png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL);
LOAD_ERROR ("failed to initialize the memory for image information");
}
png_init_io(png_ptr, fp);
png_set_sig_bytes(png_ptr, sig_read);
png_read_info(png_ptr, info_ptr);
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
&interlace_type, int_p_NULL, int_p_NULL);
if (color_type != PNG_COLOR_TYPE_RGB) //FIXME: RGBA
{
fclose(fp);
png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL);
LOAD_ERROR ("color type is not rgb");
}
pixbufoverlay->width = width;
pixbufoverlay->height = height;
pixbufoverlay->pixbuf = (guchar*) malloc ( sizeof(guchar) * width * height * 3 );
rows = (guchar**)malloc(sizeof(guchar*) * height);
for (y = 0; y < height; ++y)
rows[y] = (guchar*) (pixbufoverlay->pixbuf + y * width * 3);
png_read_image(png_ptr, rows);
free(rows);
png_read_end(png_ptr, info_ptr);
png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
fclose(fp);
return TRUE;
}

6
gst/gl/gstopengl.c
View file

@ -53,7 +53,7 @@
#include "gstglimagesink.h"
#include "gstglcolorscale.h"
#include "gstgleffects.h"
#ifdef HAVE_GDKPIXBUF
#ifdef HAVE_GDKPIXBUF //FIXME: HAVE_LIBPNG
#include "gstglbumper.h"
#endif
@ -65,7 +65,7 @@ GType gst_gl_filtersobel_get_type (void);
GType gst_gl_filter_edge_get_type (void);
GType gst_gl_filter_laplacian_get_type (void);
GType gst_gl_filter_glass_get_type (void);
#ifdef HAVE_GDKPIXBUF
#ifdef HAVE_GDKPIXBUF //FIXME: HAVE_LIBPNG
GType gst_gl_pixbufoverlay_get_type (void);
GType gst_gl_differencematte_get_type (void);
GType gst_gl_bumper_get_type (void);
@ -94,7 +94,7 @@ plugin_init (GstPlugin * plugin)
GST_RANK_NONE, GST_TYPE_GL_FILTER_CUBE)) {
return FALSE;
}
#ifdef HAVE_GDKPIXBUF
#ifdef HAVE_GDKPIXBUF //FIXME: HAVE_LIBPNG
if (!gst_element_register (plugin, "glpixbufoverlay",
GST_RANK_NONE, gst_gl_pixbufoverlay_get_type())) {
return FALSE;