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applemedia: ensure all textures are released before texturecache is released

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It was previously possible for videotexturecache to be finalized before all of
its textures. Finalizing outstanding textures in this circumstance leads
to a crash. This patch ensure resources are freed in the proper order.

https://bugzilla.gnome.org/show_bug.cgi?id=779247
This commit is contained in:
Nick Kallen 2017-02-26 10:24:46 +01:00 committed by Sebastian Dröge
parent be1eeba67d
commit e557e93f3b
1 changed files with 29 additions and 15 deletions
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44
sys/applemedia/videotexturecache.m
View file

@ -42,6 +42,13 @@ typedef struct _ContextThreadData
GstMemory *memory;
} ContextThreadData;
typedef struct _TextureWrapper
{
CVOpenGLESTextureCacheRef *cache;
CVOpenGLESTextureRef texture;
} TextureWrapper;
GstVideoTextureCache *
gst_video_texture_cache_new (GstGLContext * ctx)
{
@ -129,6 +136,12 @@ gst_video_texture_cache_set_format (GstVideoTextureCache * cache,
}
#if HAVE_IOS
void gst_video_texture_cache_release_texture(TextureWrapper *data) {
CFRelease(data->texture);
CFRelease(data->cache);
g_free(data);
}
static void
_do_create_memory (GstGLContext * context, ContextThreadData * data)
{
@ -141,6 +154,7 @@ _do_create_memory (GstGLContext * context, ContextThreadData * data)
GstGLTextureTarget gl_target;
GstAppleCoreVideoMemory *memory;
GstIOSGLMemory *gl_memory;
GstVideoGLTextureType textype;
switch (GST_VIDEO_INFO_FORMAT (&cache->input_info)) {
case GST_VIDEO_FORMAT_BGRA:
@ -151,16 +165,10 @@ _do_create_memory (GstGLContext * context, ContextThreadData * data)
GL_RGBA, GL_UNSIGNED_BYTE, 0, &texture) != kCVReturnSuccess)
goto error;
gl_target = gst_gl_texture_target_from_gl (CVOpenGLESTextureGetTarget (texture));
memory = gst_apple_core_video_memory_new_wrapped (gpixbuf, plane, size);
gl_memory = gst_ios_gl_memory_new_wrapped (context, memory,
gl_target, GST_VIDEO_GL_TEXTURE_TYPE_RGBA,
CVOpenGLESTextureGetName (texture),
&cache->input_info,
0, NULL, texture, (GDestroyNotify) CFRelease);
break;
textype = GST_VIDEO_GL_TEXTURE_TYPE_RGBA;
plane = 0;
goto success;
case GST_VIDEO_FORMAT_NV12: {
GstVideoGLTextureType textype;
GLenum texifmt, texfmt;
if (plane == 0)
@ -177,21 +185,27 @@ _do_create_memory (GstGLContext * context, ContextThreadData * data)
texfmt, GL_UNSIGNED_BYTE, plane, &texture) != kCVReturnSuccess)
goto error;
gl_target = gst_gl_texture_target_from_gl (CVOpenGLESTextureGetTarget (texture));
memory = gst_apple_core_video_memory_new_wrapped (gpixbuf, plane, size);
gl_memory = gst_ios_gl_memory_new_wrapped (context, memory,
gl_target, textype, CVOpenGLESTextureGetName (texture), &cache->input_info,
plane, NULL, texture, (GDestroyNotify) CFRelease);
break;
goto success;
}
default:
g_warn_if_reached ();
goto error;
}
success: {
TextureWrapper *texture_data = g_new(TextureWrapper, 1);
texture_data->cache = CFRetain(cache->cache);
texture_data->texture = texture;
gl_target = gst_gl_texture_target_from_gl (CVOpenGLESTextureGetTarget (texture));
memory = gst_apple_core_video_memory_new_wrapped (gpixbuf, plane, size);
gl_memory = gst_ios_gl_memory_new_wrapped (context, memory,
gl_target, textype, CVOpenGLESTextureGetName (texture), &cache->input_info,
plane, NULL, texture_data, (GDestroyNotify) gst_video_texture_cache_release_texture);
data->memory = GST_MEMORY_CAST (gl_memory);
return;
}
error:
data->memory = NULL;