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libobs: Add output duplicator support

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This adds support for the windows 8+ output duplicator feature which
allows the efficient capturing of a specific monitor connected to the
currently used device.
This commit is contained in:
jp9000
2014-12-29 00:29:55 -08:00
parent a5447b5fd8
commit 44b8c24f34
7 changed files with 315 additions and 0 deletions
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5
libobs/graphics/graphics-imports.c
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@@ -175,6 +175,11 @@ bool load_graphics_imports(struct gs_exports *exports, void *module,
#elif _WIN32
GRAPHICS_IMPORT(device_gdi_texture_available);
GRAPHICS_IMPORT(device_shared_texture_available);
GRAPHICS_IMPORT_OPTIONAL(device_get_duplicator_monitor_info);
GRAPHICS_IMPORT_OPTIONAL(device_duplicator_create);
GRAPHICS_IMPORT_OPTIONAL(gs_duplicator_destroy);
GRAPHICS_IMPORT_OPTIONAL(gs_duplicator_update_frame);
GRAPHICS_IMPORT_OPTIONAL(gs_duplicator_get_texture);
GRAPHICS_IMPORT_OPTIONAL(device_texture_create_gdi);
GRAPHICS_IMPORT_OPTIONAL(gs_texture_get_dc);
GRAPHICS_IMPORT_OPTIONAL(gs_texture_release_dc);

10
libobs/graphics/graphics-internal.h
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@@ -232,6 +232,16 @@ struct gs_exports {
bool (*device_gdi_texture_available)(void);
bool (*device_shared_texture_available)(void);
bool (*device_get_duplicator_monitor_info)(gs_device_t *device,
int monitor_idx, struct gs_monitor_info *monitor_info);
gs_duplicator_t *(*device_duplicator_create)(gs_device_t *device,
int monitor_idx);
void (*gs_duplicator_destroy)(gs_duplicator_t *duplicator);
bool (*gs_duplicator_update_frame)(gs_duplicator_t *duplicator);
gs_texture_t *(*gs_duplicator_get_texture)(gs_duplicator_t *duplicator);
gs_texture_t *(*device_texture_create_gdi)(gs_device_t *device,
uint32_t width, uint32_t height);

54
libobs/graphics/graphics.c
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@@ -1967,6 +1967,60 @@ bool gs_shared_texture_available(void)
return thread_graphics->exports.device_shared_texture_available();
}
bool gs_get_duplicator_monitor_info(int monitor_idx,
struct gs_monitor_info *monitor_info)
{
if (!thread_graphics)
return false;
if (!thread_graphics->exports.device_get_duplicator_monitor_info)
return false;
return thread_graphics->exports.device_get_duplicator_monitor_info(
thread_graphics->device, monitor_idx,
monitor_info);
}
gs_duplicator_t *gs_duplicator_create(int monitor_idx)
{
if (!thread_graphics)
return NULL;
if (!thread_graphics->exports.device_duplicator_create)
return NULL;
return thread_graphics->exports.device_duplicator_create(
thread_graphics->device, monitor_idx);
}
void gs_duplicator_destroy(gs_duplicator_t *duplicator)
{
if (!thread_graphics)
return;
if (!thread_graphics->exports.gs_duplicator_destroy)
return;
thread_graphics->exports.gs_duplicator_destroy(duplicator);
}
bool gs_duplicator_update_frame(gs_duplicator_t *duplicator)
{
if (!thread_graphics)
return true;
if (!thread_graphics->exports.gs_duplicator_get_texture)
return true;
return thread_graphics->exports.gs_duplicator_update_frame(duplicator);
}
gs_texture_t *gs_duplicator_get_texture(gs_duplicator_t *duplicator)
{
if (!thread_graphics)
return NULL;
if (!thread_graphics->exports.gs_duplicator_get_texture)
return NULL;
return thread_graphics->exports.gs_duplicator_get_texture(duplicator);
}
/** creates a windows GDI-lockable texture */
gs_texture_t *gs_texture_create_gdi(uint32_t width, uint32_t height)
{

25
libobs/graphics/graphics.h
View File

@@ -168,6 +168,14 @@ enum gs_texture_type {
GS_TEXTURE_CUBE
};
struct gs_monitor_info {
int rotation_degrees;
long x;
long y;
long cx;
long cy;
};
struct gs_tvertarray {
size_t width;
void *array;
@@ -712,6 +720,23 @@ EXPORT bool gs_texture_rebind_iosurface(gs_texture_t *texture,
EXPORT bool gs_gdi_texture_available(void);
EXPORT bool gs_shared_texture_available(void);
struct gs_duplicator;
typedef struct gs_duplicator gs_duplicator_t;
/**
* Gets information about the monitor at the specific index, returns false
* when there is no monitor at the specified index
*/
EXPORT bool gs_get_duplicator_monitor_info(int monitor_idx,
struct gs_monitor_info *monitor_info);
/** creates a windows 8+ output duplicator (monitor capture) */
EXPORT gs_duplicator_t *gs_duplicator_create(int monitor_idx);
EXPORT void gs_duplicator_destroy(gs_duplicator_t *duplicator);
EXPORT bool gs_duplicator_update_frame(gs_duplicator_t *duplicator);
EXPORT gs_texture_t *gs_duplicator_get_texture(gs_duplicator_t *duplicator);
/** creates a windows GDI-lockable texture */
EXPORT gs_texture_t *gs_texture_create_gdi(uint32_t width, uint32_t height);