gstreamer/sys/applemedia/videotexturecache.m
Alessandro Decina f6154b4cc0 applemedia: always fill GstBuffers with GstMemory
Always fill buffers with our custom memory. The custom memory will avoid
mapping CV/CM buffers unless necessary.
2016-01-19 16:13:04 +11:00

285 lines
10 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>
#include <gst/gl/cocoa/gstglcontext_cocoa.h>
#include <gst/gl/gstglbufferpool.h>
#include "iosurfacememory.h"
#endif
#include "videotexturecache.h"
#include "coremediabuffer.h"
#include "corevideobuffer.h"
#include "vtutil.h"
typedef struct _ContextThreadData
{
GstVideoTextureCache *cache;
GstBuffer *input_buffer;
GstBuffer *output_buffer;
} ContextThreadData;
GstVideoTextureCache *
gst_video_texture_cache_new (GstGLContext * ctx)
{
g_return_val_if_fail (ctx != NULL, NULL);
GstVideoTextureCache *cache = g_new0 (GstVideoTextureCache, 1);
cache->ctx = gst_object_ref (ctx);
gst_video_info_init (&cache->input_info);
#if HAVE_IOS
CFMutableDictionaryRef cache_attrs =
CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
gst_vtutil_dict_set_i32 (cache_attrs,
kCVOpenGLESTextureCacheMaximumTextureAgeKey, 0);
CVOpenGLESTextureCacheCreate (kCFAllocatorDefault, (CFDictionaryRef) cache_attrs,
(CVEAGLContext) gst_gl_context_get_gl_context (ctx), NULL, &cache->cache);
#else
gst_ios_surface_memory_init ();
#if 0
cache->pool = GST_BUFFER_POOL (gst_gl_buffer_pool_new (ctx));
#endif
#endif
return cache;
}
void
gst_video_texture_cache_free (GstVideoTextureCache * cache)
{
g_return_if_fail (cache != NULL);
#if HAVE_IOS
CFRelease (cache->cache); /* iOS has no "CVOpenGLESTextureCacheRelease" */
#else
#if 0
gst_buffer_pool_set_active (cache->pool, FALSE);
gst_object_unref (cache->pool);
#endif
#endif
gst_object_unref (cache->ctx);
if (cache->in_caps)
gst_caps_unref (cache->in_caps);
if (cache->out_caps)
gst_caps_unref (cache->out_caps);
g_free (cache);
}
void
gst_video_texture_cache_set_format (GstVideoTextureCache * cache,
GstVideoFormat in_format, GstCaps * out_caps)
{
GstCaps *in_caps;
GstCapsFeatures *features;
g_return_if_fail (gst_caps_is_fixed (out_caps));
out_caps = gst_caps_copy (out_caps);
features = gst_caps_get_features (out_caps, 0);
gst_caps_features_add (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
gst_video_info_from_caps (&cache->output_info, out_caps);
in_caps = gst_caps_copy (out_caps);
gst_caps_set_simple (in_caps, "format",
G_TYPE_STRING, gst_video_format_to_string (in_format), NULL);
features = gst_caps_get_features (in_caps, 0);
gst_caps_features_add (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
gst_video_info_from_caps (&cache->input_info, in_caps);
if (cache->in_caps)
gst_caps_unref (cache->in_caps);
if (cache->out_caps)
gst_caps_unref (cache->out_caps);
cache->in_caps = in_caps;
cache->out_caps = out_caps;
#if 0
GstStructure *config = gst_buffer_pool_get_config (cache->pool);
gst_buffer_pool_config_set_params (config, cache->in_caps,
GST_VIDEO_INFO_SIZE (&cache->input_info), 0, 0);
gst_buffer_pool_config_set_allocator (config,
gst_allocator_find (GST_IO_SURFACE_MEMORY_ALLOCATOR_NAME), NULL);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_RECTANGLE);
gst_buffer_pool_set_config (cache->pool, config);
gst_buffer_pool_set_active (cache->pool, TRUE);
#endif
}
static CVPixelBufferRef
cv_pixel_buffer_from_gst_buffer (GstBuffer * buffer)
{
GstCoreMediaMeta *cm_meta =
(GstCoreMediaMeta *) gst_buffer_get_meta (buffer,
gst_core_media_meta_api_get_type ());
GstCoreVideoMeta *cv_meta =
(GstCoreVideoMeta *) gst_buffer_get_meta (buffer,
gst_core_video_meta_api_get_type ());
g_return_val_if_fail (cm_meta || cv_meta, NULL);
return cm_meta ? cm_meta->pixel_buf : cv_meta->pixbuf;
}
#if HAVE_IOS
static void
_do_get_gl_buffer (GstGLContext * context, ContextThreadData * data)
{
CVOpenGLESTextureRef texture = NULL;
GstVideoTextureCache *cache = data->cache;
CVPixelBufferRef pixel_buf = cv_pixel_buffer_from_gst_buffer (data->input_buffer);
GstGLTextureTarget gl_target;
GstGLBaseMemoryAllocator *base_mem_alloc;
GstGLVideoAllocationParams *params;
GstBuffer *output_buffer;
base_mem_alloc = GST_GL_BASE_MEMORY_ALLOCATOR (gst_gl_memory_allocator_get_default (cache->ctx));
output_buffer = gst_buffer_new ();
gst_buffer_copy_into (output_buffer, data->input_buffer, GST_BUFFER_COPY_METADATA, 0, -1);
CVOpenGLESTextureCacheFlush (cache->cache, 0);
switch (GST_VIDEO_INFO_FORMAT (&cache->input_info)) {
case GST_VIDEO_FORMAT_BGRA:
/* avfvideosrc does BGRA on iOS when doing GLMemory */
if (CVOpenGLESTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
cache->cache, pixel_buf, NULL, GL_TEXTURE_2D, GL_RGBA,
GST_VIDEO_INFO_WIDTH (&cache->input_info),
GST_VIDEO_INFO_HEIGHT (&cache->input_info),
GL_RGBA, GL_UNSIGNED_BYTE, 0, &texture) != kCVReturnSuccess)
goto error;
gl_target = gst_gl_texture_target_from_gl (CVOpenGLESTextureGetTarget (texture));
params = gst_gl_video_allocation_params_new_wrapped_texture (cache->ctx,
NULL, &cache->input_info, 0, NULL, gl_target,
CVOpenGLESTextureGetName (texture), texture,
(GDestroyNotify) CFRelease);
gst_buffer_append_memory (output_buffer,
(GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
(GstGLAllocationParams *) params));
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
break;
case GST_VIDEO_FORMAT_NV12: {
GstVideoGLTextureType textype;
GLenum texifmt, texfmt;
textype = gst_gl_texture_type_from_format (cache->ctx, GST_VIDEO_FORMAT_NV12, 0);
texifmt = gst_gl_format_from_gl_texture_type (textype);
texfmt = gst_gl_sized_gl_format_from_gl_format_type (cache->ctx, texifmt, GL_UNSIGNED_BYTE);
/* vtdec does NV12 on iOS when doing GLMemory */
if (CVOpenGLESTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
cache->cache, pixel_buf, NULL, GL_TEXTURE_2D, texifmt,
GST_VIDEO_INFO_WIDTH (&cache->input_info),
GST_VIDEO_INFO_HEIGHT (&cache->input_info),
texfmt, GL_UNSIGNED_BYTE, 0, &texture) != kCVReturnSuccess)
goto error;
gl_target = gst_gl_texture_target_from_gl (CVOpenGLESTextureGetTarget (texture));
params = gst_gl_video_allocation_params_new_wrapped_texture (cache->ctx,
NULL, &cache->input_info, 0, NULL, gl_target,
CVOpenGLESTextureGetName (texture), texture,
(GDestroyNotify) CFRelease);
gst_buffer_append_memory (output_buffer,
(GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
(GstGLAllocationParams *) params));
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
textype = gst_gl_texture_type_from_format (cache->ctx, GST_VIDEO_FORMAT_NV12, 1);
texifmt = gst_gl_format_from_gl_texture_type (textype);
texfmt = gst_gl_sized_gl_format_from_gl_format_type (cache->ctx, texifmt, GL_UNSIGNED_BYTE);
if (CVOpenGLESTextureCacheCreateTextureFromImage (kCFAllocatorDefault,
cache->cache, pixel_buf, NULL, GL_TEXTURE_2D, texifmt,
GST_VIDEO_INFO_WIDTH (&cache->input_info) / 2,
GST_VIDEO_INFO_HEIGHT (&cache->input_info) / 2,
texfmt, GL_UNSIGNED_BYTE, 1, &texture) != kCVReturnSuccess)
goto error;
gl_target = gst_gl_texture_target_from_gl (CVOpenGLESTextureGetTarget (texture));
params = gst_gl_video_allocation_params_new_wrapped_texture (cache->ctx,
NULL, &cache->input_info, 1, NULL, gl_target,
CVOpenGLESTextureGetName (texture), texture,
(GDestroyNotify) CFRelease);
gst_buffer_append_memory (output_buffer,
(GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
(GstGLAllocationParams *) params));
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
break;
}
default:
g_warn_if_reached ();
goto error;
}
gst_object_unref (base_mem_alloc);
data->output_buffer = output_buffer;
return;
error:
data->output_buffer = NULL;
}
#else /* !HAVE_IOS */
static void
_do_get_gl_buffer (GstGLContext * context, ContextThreadData * data)
{
GstVideoTextureCache *cache = data->cache;
CVPixelBufferRef pixel_buf = cv_pixel_buffer_from_gst_buffer (data->input_buffer);
IOSurfaceRef surface = CVPixelBufferGetIOSurface (pixel_buf);
data->output_buffer = gst_buffer_new ();
gst_buffer_copy_into (data->output_buffer, data->input_buffer, GST_BUFFER_COPY_METADATA, 0, -1);
for (int i = 0; i < GST_VIDEO_INFO_N_PLANES (&cache->input_info); i++) {
GstIOSurfaceMemory *mem;
CFRetain (pixel_buf);
mem = gst_io_surface_memory_wrapped (cache->ctx,
surface, GST_GL_TEXTURE_TARGET_RECTANGLE, &cache->input_info,
i, NULL, pixel_buf, (GDestroyNotify) CFRelease);
gst_buffer_append_memory (data->output_buffer, (GstMemory *) mem);
}
}
#endif
GstBuffer *
gst_video_texture_cache_get_gl_buffer (GstVideoTextureCache * cache,
GstBuffer * cv_buffer)
{
ContextThreadData data = {cache, cv_buffer, NULL};
gst_gl_context_thread_add (cache->ctx,
(GstGLContextThreadFunc) _do_get_gl_buffer, &data);
gst_buffer_unref (cv_buffer);
return data.output_buffer;
}