mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
113 lines
3.7 KiB
Objective-C
113 lines
3.7 KiB
Objective-C
/*
|
|
* Copyright (C) 2010 Ole André Vadla Ravnås <oleavr@soundrop.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#if !HAVE_IOS
|
|
#import <AppKit/AppKit.h>
|
|
#endif
|
|
#include "corevideotexturecache.h"
|
|
#include "coremediabuffer.h"
|
|
|
|
GstCoreVideoTextureCache *
|
|
gst_core_video_texture_cache_new (GstGLContext * ctx)
|
|
{
|
|
CVReturn err;
|
|
|
|
g_return_val_if_fail (ctx != NULL, NULL);
|
|
|
|
GstCoreVideoTextureCache *cache = g_new0 (GstCoreVideoTextureCache, 1);
|
|
cache->ctx = gst_object_ref (ctx);
|
|
|
|
#if !HAVE_IOS
|
|
CGLPixelFormatAttribute attribs[1] = { 0 };
|
|
int numPixelFormats;
|
|
CGLPixelFormatObj pixelFormat;
|
|
CGLChoosePixelFormat (attribs, &pixelFormat, &numPixelFormats); // 5
|
|
NSOpenGLContext *platform_ctx = (NSOpenGLContext *) gst_gl_context_get_gl_context (ctx);
|
|
err = CVOpenGLTextureCacheCreate (kCFAllocatorDefault, NULL,
|
|
[platform_ctx CGLContextObj], pixelFormat,
|
|
NULL, &cache->cache);
|
|
#else
|
|
err = CVOpenGLESTextureCacheCreate (kCFAllocatorDefault, NULL,
|
|
(CVEAGLContext) gst_gl_context_get_gl_context (ctx),
|
|
NULL, &cache->cache);
|
|
#endif
|
|
|
|
return cache;
|
|
}
|
|
|
|
void gst_core_video_texture_cache_free (GstCoreVideoTextureCache * cache)
|
|
{
|
|
g_return_if_fail (cache != NULL);
|
|
|
|
#if !HAVE_IOS
|
|
CVOpenGLTextureCacheRelease (cache->cache);
|
|
#else
|
|
/* FIXME: how do we release ->cache ? */
|
|
#endif
|
|
gst_object_unref (cache->ctx);
|
|
g_free (cache);
|
|
}
|
|
|
|
gboolean
|
|
gst_core_video_texture_cache_upload (GstVideoGLTextureUploadMeta * meta, guint texture_id[4])
|
|
{
|
|
g_return_val_if_fail (meta != NULL, FALSE);
|
|
|
|
GstCoreVideoTextureCache *cache = (GstCoreVideoTextureCache *) meta->user_data;
|
|
const GstGLFuncs *gl = cache->ctx->gl_vtable;
|
|
#if !HAVE_IOS
|
|
CVOpenGLTextureRef texture = NULL;
|
|
#else
|
|
CVOpenGLESTextureRef texture = NULL;
|
|
#endif
|
|
GstVideoMeta *video_meta = gst_buffer_get_video_meta (meta->buffer);
|
|
GstCoreMediaMeta *cv_meta = (GstCoreMediaMeta *) gst_buffer_get_meta (meta->buffer,
|
|
gst_core_media_meta_api_get_type ());
|
|
#if !HAVE_IOS
|
|
CVOpenGLTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
|
|
cache->cache, cv_meta->pixel_buf, NULL, &texture);
|
|
#else
|
|
CVOpenGLESTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
|
|
cache->cache, cv_meta->image_buf, NULL, GL_TEXTURE_2D,
|
|
GL_RGBA, video_meta->width, video_meta->height, GL_RGBA, GL_UNSIGNED_BYTE,
|
|
0, &texture);
|
|
#endif
|
|
GLuint fboId;
|
|
gl->GenFramebuffers (1, &fboId);
|
|
gl->BindFramebuffer (GL_FRAMEBUFFER, fboId);
|
|
|
|
gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
|
|
#if !HAVE_IOS
|
|
CVOpenGLTextureGetTarget(texture), CVOpenGLTextureGetName(texture),
|
|
#else
|
|
CVOpenGLESTextureGetTarget(texture), CVOpenGLESTextureGetName(texture),
|
|
#endif
|
|
0);
|
|
gl->BindTexture (GL_TEXTURE_2D, texture_id[0]);
|
|
gl->CopyTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, 0, 0, video_meta->width, video_meta->height, 0);
|
|
gl->BindTexture (GL_TEXTURE_2D, 0);
|
|
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
|
|
gl->DeleteFramebuffers (1, &fboId);
|
|
|
|
return TRUE;
|
|
}
|