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Move GLES calls to the context thread. Fix CVOpenGLESTextureCacheCreateTextureFromImage usage on iOS.
216 lines
6.8 KiB
Objective-C
216 lines
6.8 KiB
Objective-C
/*
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* Copyright (C) 2010 Ole André Vadla Ravnås <oleavr@soundrop.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#if !HAVE_IOS
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#import <AppKit/AppKit.h>
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#include <gst/gl/cocoa/gstglcontext_cocoa.h>
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#endif
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#include "corevideotexturecache.h"
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#include "coremediabuffer.h"
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#include "corevideobuffer.h"
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#include "vtutil.h"
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typedef struct _ContextThreadData
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{
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GstCoreVideoTextureCache *cache;
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GstBuffer *input_buffer;
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GstBuffer *output_buffer;
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} ContextThreadData;
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GstCoreVideoTextureCache *
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gst_core_video_texture_cache_new (GstGLContext * ctx)
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{
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g_return_val_if_fail (ctx != NULL, NULL);
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GstCoreVideoTextureCache *cache = g_new0 (GstCoreVideoTextureCache, 1);
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cache->ctx = gst_object_ref (ctx);
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gst_video_info_init (&cache->input_info);
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cache->convert = gst_gl_color_convert_new (cache->ctx);
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#if !HAVE_IOS
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CGLPixelFormatObj pixelFormat =
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gst_gl_context_cocoa_get_pixel_format (GST_GL_CONTEXT_COCOA (ctx));
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CGLContextObj platform_ctx =
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(CGLContextObj) gst_gl_context_get_gl_context (ctx);
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CVOpenGLTextureCacheCreate (kCFAllocatorDefault, NULL, platform_ctx,
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pixelFormat, NULL, &cache->cache);
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#else
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CFMutableDictionaryRef cache_attrs =
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CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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gst_vtutil_dict_set_i32 (cache_attrs,
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kCVOpenGLESTextureCacheMaximumTextureAgeKey, 0);
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CVOpenGLESTextureCacheCreate (kCFAllocatorDefault, (CFDictionaryRef) cache_attrs,
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(CVEAGLContext) gst_gl_context_get_gl_context (ctx), NULL, &cache->cache);
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#endif
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return cache;
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}
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void
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gst_core_video_texture_cache_free (GstCoreVideoTextureCache * cache)
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{
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g_return_if_fail (cache != NULL);
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#if !HAVE_IOS
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CVOpenGLTextureCacheRelease (cache->cache);
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#else
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/* FIXME: how do we release ->cache ? */
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#endif
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gst_object_unref (cache->convert);
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gst_object_unref (cache->ctx);
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g_free (cache);
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}
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void
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gst_core_video_texture_cache_set_format (GstCoreVideoTextureCache * cache,
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const gchar * input_format, GstCaps * out_caps)
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{
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GstCaps *in_caps;
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GstCapsFeatures *features;
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g_return_if_fail (gst_caps_is_fixed (out_caps));
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out_caps = gst_caps_copy (out_caps);
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features = gst_caps_get_features (out_caps, 0);
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gst_caps_features_add (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
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gst_video_info_from_caps (&cache->output_info, out_caps);
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in_caps = gst_caps_copy (out_caps);
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gst_caps_set_simple (in_caps, "format", G_TYPE_STRING, input_format, NULL);
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features = gst_caps_get_features (in_caps, 0);
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gst_caps_features_add (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
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gst_video_info_from_caps (&cache->input_info, in_caps);
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gst_gl_color_convert_set_caps (cache->convert, in_caps, out_caps);
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gst_caps_unref (out_caps);
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gst_caps_unref (in_caps);
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}
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static CVPixelBufferRef
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cv_pixel_buffer_from_gst_buffer (GstBuffer * buffer)
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{
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GstCoreMediaMeta *cm_meta =
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(GstCoreMediaMeta *) gst_buffer_get_meta (buffer,
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gst_core_media_meta_api_get_type ());
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GstCoreVideoMeta *cv_meta =
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(GstCoreVideoMeta *) gst_buffer_get_meta (buffer,
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gst_core_video_meta_api_get_type ());
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g_return_val_if_fail (cm_meta || cv_meta, NULL);
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return cm_meta ? cm_meta->pixel_buf : cv_meta->pixbuf;
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}
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static gboolean
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gl_mem_from_buffer (GstCoreVideoTextureCache * cache,
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GstBuffer * buffer, GstMemory **mem1, GstMemory **mem2)
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{
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#if !HAVE_IOS
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CVOpenGLTextureRef texture = NULL;
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#else
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CVOpenGLESTextureRef texture = NULL;
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#endif
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CVPixelBufferRef pixel_buf = cv_pixel_buffer_from_gst_buffer (buffer);
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*mem1 = NULL;
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*mem2 = NULL;
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#if !HAVE_IOS
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CVOpenGLTextureCacheFlush (cache->cache, 0);
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if (CVOpenGLTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
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cache->cache, pixel_buf, NULL, &texture) != kCVReturnSuccess)
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goto error;
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*mem1 = (GstMemory *) gst_gl_memory_wrapped_texture (cache->ctx,
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CVOpenGLTextureGetName (texture), CVOpenGLTextureGetTarget (texture),
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&cache->input_info, 0, NULL, texture, (GDestroyNotify) CFRelease);
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#else
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CVOpenGLESTextureCacheFlush (cache->cache, 0);
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if (CVOpenGLESTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
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cache->cache, pixel_buf, NULL, GL_TEXTURE_2D, GL_LUMINANCE,
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GST_VIDEO_INFO_WIDTH (&cache->input_info),
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GST_VIDEO_INFO_HEIGHT (&cache->input_info),
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GL_LUMINANCE, GL_UNSIGNED_BYTE, 0, &texture) != kCVReturnSuccess)
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goto error;
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*mem1 = (GstMemory *) gst_gl_memory_wrapped_texture (cache->ctx,
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CVOpenGLESTextureGetName (texture), CVOpenGLESTextureGetTarget (texture),
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&cache->input_info, 0, NULL, texture, (GDestroyNotify) CFRelease);
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if (CVOpenGLESTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
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cache->cache, pixel_buf, NULL, GL_TEXTURE_2D, GL_LUMINANCE_ALPHA,
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GST_VIDEO_INFO_WIDTH (&cache->input_info) / 2,
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GST_VIDEO_INFO_HEIGHT (&cache->input_info) / 2,
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GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, 1, &texture) != kCVReturnSuccess)
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goto error;
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*mem2 = (GstMemory *) gst_gl_memory_wrapped_texture (cache->ctx,
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CVOpenGLESTextureGetName (texture), CVOpenGLESTextureGetTarget (texture),
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&cache->input_info, 0, NULL, texture, (GDestroyNotify) CFRelease);
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#endif
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return TRUE;
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error:
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if (*mem1)
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gst_memory_unref (*mem1);
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if (*mem2)
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gst_memory_unref (*mem2);
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return FALSE;
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}
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static void
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_do_get_gl_buffer (GstGLContext * context, ContextThreadData * data)
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{
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GstMemory *mem1 = NULL, *mem2 = NULL;
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GstCoreVideoTextureCache *cache = data->cache;
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GstBuffer *buffer = data->input_buffer;
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if (!gl_mem_from_buffer (cache, buffer, &mem1, &mem2)) {
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gst_buffer_unref (buffer);
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data->output_buffer = NULL;
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return;
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}
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gst_buffer_append_memory (buffer, mem1);
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if (mem2)
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gst_buffer_append_memory (buffer, mem2);
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data->output_buffer = gst_gl_color_convert_perform (cache->convert, buffer);
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gst_buffer_unref (buffer);
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}
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GstBuffer *
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gst_core_video_texture_cache_get_gl_buffer (GstCoreVideoTextureCache * cache,
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GstBuffer * cv_buffer)
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{
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ContextThreadData data = {cache, cv_buffer, NULL};
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gst_gl_context_thread_add (cache->ctx,
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(GstGLContextThreadFunc) _do_get_gl_buffer, &data);
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return data.output_buffer;
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}
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