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gl: add a method to get DMA formats and modifiers

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By calling the internal function gst_gl_context_egl_fetch_dma_formats() the an
array of structures holding a DMA fourcc format and its modifiers (another array of
structure holing modifier and if it's external only) will be stored.

Users would call gst_gl_context_egl_get_format_modifiers() to get the array of
modifiers of a specific DMA fourcc format.

Co-authored-by: He Junyan <junyan.he@intel.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4680>
This commit is contained in:
Víctor Manuel Jáquez Leal 2023-04-17 18:05:23 +02:00 committed by GStreamer Marge Bot
parent 4008b872bb
commit 7eed950caa
2 changed files with 274 additions and 0 deletions
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256
subprojects/gst-plugins-base/gst-libs/gst/gl/egl/gstglcontext_egl.c
View file

@ -59,6 +59,19 @@
#define GST_CAT_DEFAULT gst_gl_context_debug #define GST_CAT_DEFAULT gst_gl_context_debug
typedef struct _GstGLDmaFormat GstGLDmaFormat;
/**
* GstGLDmaFormat: (skip)
*
* Opaque struct
*/
struct _GstGLDmaFormat
{
gint fourcc;
GArray *modifiers;
};
static gboolean gst_gl_context_egl_create_context (GstGLContext * context, static gboolean gst_gl_context_egl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error); GstGLAPI gl_api, GstGLContext * other_context, GError ** error);
static void gst_gl_context_egl_destroy_context (GstGLContext * context); static void gst_gl_context_egl_destroy_context (GstGLContext * context);
@ -1195,6 +1208,8 @@ gst_gl_context_egl_destroy_context (GstGLContext * context)
gst_object_unref (window); gst_object_unref (window);
} }
g_clear_pointer (&egl->dma_formats, g_array_unref);
gst_gl_context_egl_activate (context, FALSE); gst_gl_context_egl_activate (context, FALSE);
if (egl->egl_surface) { if (egl->egl_surface) {
@ -1506,3 +1521,244 @@ failure:
gst_object_unref (display_egl); gst_object_unref (display_egl);
return FALSE; return FALSE;
} }
#if GST_GL_HAVE_DMABUF
static int
_compare_dma_formats (gconstpointer a, gconstpointer b)
{
return ((((GstGLDmaFormat *) a)->fourcc) - (((GstGLDmaFormat *) b)->fourcc));
}
static void
_free_dma_formats (gpointer data)
{
GstGLDmaFormat *format = data;
if (format->modifiers)
g_array_unref (format->modifiers);
}
/**
* gst_gl_context_egl_get_dma_formats: (skip)
* @context: A #GstGLContextEGL object
*
* Returns: %TRUE if the array of DMABufs modifiers were fetched. Otherwise,
* %FALSE
*/
static gboolean
gst_gl_context_egl_fetch_dma_formats (GstGLContext * context)
{
GstGLContextEGL *egl;
EGLDisplay egl_dpy = EGL_DEFAULT_DISPLAY;
GstGLDisplayEGL *gl_dpy_egl;
EGLint *formats = NULL, num_formats, mods_len = 0;
guint i, j;
gboolean ret;
EGLuint64KHR *modifiers = NULL;
EGLBoolean *ext_only = NULL;
GArray *dma_formats;
EGLBoolean (*gst_eglQueryDmaBufFormatsEXT) (EGLDisplay dpy,
EGLint max_formats, EGLint * formats, EGLint * num_formats);
EGLBoolean (*gst_eglQueryDmaBufModifiersEXT) (EGLDisplay dpy,
EGLint format, EGLint max_modifiers, EGLuint64KHR * modifiers,
EGLBoolean * external_only, EGLint * num_modifiers);
egl = GST_GL_CONTEXT_EGL (context);
GST_OBJECT_LOCK (context);
if (egl->dma_formats) {
GST_OBJECT_UNLOCK (context);
return TRUE;
}
GST_OBJECT_UNLOCK (context);
if (!gst_gl_context_check_feature (context,
"EGL_EXT_image_dma_buf_import_modifiers")) {
GST_WARNING_OBJECT (context, "\"EGL_EXT_image_dma_buf_import_modifiers\" "
"feature is not available");
goto failed;
}
gst_eglQueryDmaBufFormatsEXT =
gst_gl_context_get_proc_address (context, "eglQueryDmaBufFormatsEXT");
if (!gst_eglQueryDmaBufFormatsEXT) {
GST_ERROR_OBJECT (context, "\"eglQueryDmaBufFormatsEXT\" not exposed by the"
" implementation as required by EGL >= 1.2");
goto failed;
}
gst_eglQueryDmaBufModifiersEXT =
gst_gl_context_get_proc_address (context, "eglQueryDmaBufModifiersEXT");
if (!gst_eglQueryDmaBufModifiersEXT) {
GST_ERROR_OBJECT (context, "\"eglQueryDmaBufModifiersEXT\" not exposed by "
"the implementation as required by EGL >= 1.2");
goto failed;
}
gl_dpy_egl = gst_gl_display_egl_from_gl_display (context->display);
if (!gl_dpy_egl) {
GST_WARNING_OBJECT (context,
"Failed to retrieve GstGLDisplayEGL from %" GST_PTR_FORMAT,
context->display);
goto failed;
}
egl_dpy =
(EGLDisplay) gst_gl_display_get_handle (GST_GL_DISPLAY (gl_dpy_egl));
gst_object_unref (gl_dpy_egl);
ret = gst_eglQueryDmaBufFormatsEXT (egl_dpy, 0, NULL, &num_formats);
if (!ret) {
GST_WARNING_OBJECT (context, "Failed to get number of DMABuf formats: %s",
gst_egl_get_error_string (eglGetError ()));
goto failed;
}
if (num_formats == 0) {
GST_INFO_OBJECT (context, "No DMABuf formats available");
goto failed;
}
formats = g_new (EGLint, num_formats);
ret = gst_eglQueryDmaBufFormatsEXT (egl_dpy, num_formats, formats,
&num_formats);
if (!ret) {
GST_ERROR_OBJECT (context, "Failed to get number of DMABuf formats: %s",
gst_egl_get_error_string (eglGetError ()));
goto failed;
}
if (num_formats == 0) {
GST_ERROR_OBJECT (context, "No DMABuf formats available");
goto failed;
}
dma_formats = g_array_sized_new (FALSE, FALSE, sizeof (GstGLDmaFormat),
num_formats);
g_array_set_clear_func (dma_formats, _free_dma_formats);
for (i = 0; i < num_formats; i++) {
EGLint num_mods = 0;
GstVideoFormat gst_format;
GstGLDmaFormat dma_frmt;
gst_format = gst_video_dma_drm_fourcc_to_format (formats[i]);
if (gst_format == GST_VIDEO_FORMAT_UNKNOWN)
continue;
dma_frmt.fourcc = formats[i];
dma_frmt.modifiers = NULL;
ret = gst_eglQueryDmaBufModifiersEXT (egl_dpy, formats[i], 0,
NULL, NULL, &num_mods);
if (!ret) {
GST_WARNING_OBJECT (context, "Failed to get number of DMABuf modifiers: "
"%s", gst_egl_get_error_string (eglGetError ()));
continue;
}
if (num_mods > 0) {
if (mods_len == 0) {
modifiers = g_new (EGLuint64KHR, num_mods);
ext_only = g_new (EGLBoolean, num_mods);
mods_len = num_mods;
} else if (mods_len < num_mods) {
modifiers = g_renew (EGLuint64KHR, modifiers, num_mods);
ext_only = g_renew (EGLBoolean, ext_only, num_mods);
mods_len = num_mods;
}
ret = gst_eglQueryDmaBufModifiersEXT (egl_dpy, formats[i], num_mods,
modifiers, ext_only, &num_mods);
if (!ret) {
GST_ERROR_OBJECT (context, "Failed to get number of DMABuf modifiers: "
"%s", gst_egl_get_error_string (eglGetError ()));
continue;
}
dma_frmt.modifiers = g_array_sized_new (FALSE, FALSE,
sizeof (GstGLDmaModifier), num_mods);
dma_frmt.modifiers = g_array_set_size (dma_frmt.modifiers, num_mods);
for (j = 0; j < num_mods; j++) {
GstGLDmaModifier *modifier =
&g_array_index (dma_frmt.modifiers, GstGLDmaModifier, j);
modifier->modifier = modifiers[j];
modifier->external_only = ext_only[j];
}
}
g_array_append_val (dma_formats, dma_frmt);
}
g_array_sort (dma_formats, _compare_dma_formats);
GST_OBJECT_LOCK (context);
egl->dma_formats = dma_formats;
GST_OBJECT_UNLOCK (context);
g_free (formats);
g_free (modifiers);
g_free (ext_only);
return TRUE;
failed:
{
g_free (formats);
GST_OBJECT_UNLOCK (context);
return FALSE;
}
}
#endif /* GST_GL_HAVE_DMABUF */
/**
* gst_gl_context_egl_get_format_modifiers: (skip)
* @context: an EGL #GStGLContext
* @fourcc: the FourCC format to look up
* @modifiers: (out) (nullable) (element-type GstGLDmaModifier) (transfer none):
* #GArray of modifiers for @fourcc
*
* Don't modify the content of @modifiers.
*
* Returns: %TRUE if the @modifiers for @fourcc were fetched correctly.
*
* Since: 1.24
*/
gboolean
gst_gl_context_egl_get_format_modifiers (GstGLContext * context, gint fourcc,
const GArray ** modifiers)
{
#if GST_GL_HAVE_DMABUF
GstGLContextEGL *egl;
GstGLDmaFormat *format;
guint index;
gboolean ret = FALSE;
g_return_val_if_fail (GST_IS_GL_CONTEXT_EGL (context), FALSE);
if (!gst_gl_context_egl_fetch_dma_formats (context))
return FALSE;
egl = GST_GL_CONTEXT_EGL (context);
GST_OBJECT_LOCK (context);
if (!egl->dma_formats)
goto beach;
if (!g_array_binary_search (egl->dma_formats, &fourcc, _compare_dma_formats,
&index))
goto beach;
format = &g_array_index (egl->dma_formats, GstGLDmaFormat, index);
if (!format)
goto beach;
*modifiers = format->modifiers;
ret = TRUE;
beach:
GST_OBJECT_UNLOCK (context);
return ret;
#endif
return FALSE;
}

18
subprojects/gst-plugins-base/gst-libs/gst/gl/egl/gstglcontext_egl.h
View file

@ -26,6 +26,7 @@
G_BEGIN_DECLS G_BEGIN_DECLS
typedef struct _GstGLDmaModifier GstGLDmaModifier;
typedef struct _GstGLContextEGL GstGLContextEGL; typedef struct _GstGLContextEGL GstGLContextEGL;
typedef struct _GstGLContextEGLClass GstGLContextEGLClass; typedef struct _GstGLContextEGLClass GstGLContextEGLClass;
@ -40,6 +41,17 @@ G_GNUC_INTERNAL GType gst_gl_context_egl_get_type (void);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstGLContextEGL, gst_object_unref) G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstGLContextEGL, gst_object_unref)
/**
* GstGLDmaModifier: (skip)
*
* Opaque struct
*/
struct _GstGLDmaModifier
{
/*< private >*/
guint64 modifier;
gboolean external_only;
};
/** /**
* GstGLContextEGL: * GstGLContextEGL:
@ -70,6 +82,8 @@ struct _GstGLContextEGL
gulong window_handle_signal; gulong window_handle_signal;
GstStructure *requested_config; GstStructure *requested_config;
GArray *dma_formats;
}; };
/** /**
@ -95,6 +109,10 @@ gpointer gst_gl_context_egl_get_proc_address (GstGLAPI gl_api, co
G_GNUC_INTERNAL G_GNUC_INTERNAL
gboolean gst_gl_context_egl_fill_info (GstGLContext * context, GError ** error); gboolean gst_gl_context_egl_fill_info (GstGLContext * context, GError ** error);
G_GNUC_INTERNAL
gboolean gst_gl_context_egl_get_format_modifiers (GstGLContext * context,
gint fourcc,
const GArray ** modifiers);
G_END_DECLS G_END_DECLS
#endif /* __GST_GL_CONTEXT_EGL_H__ */ #endif /* __GST_GL_CONTEXT_EGL_H__ */