am b097ece8: Merge "libadf: add helper to set up a simple post" (0ddf436e) · Commits · e / os / android_system_core

adf/libadf/adf.c

+102 −0

Original line number	Diff line number	Diff line
		@@ -706,3 +706,105 @@ void adf_format_str(__u32 format, char buf[ADF_FORMAT_STR_SIZE])
		buf[3] = (format >> 24) & 0xFF;
		buf[4] = '\0';
		}

		static bool adf_find_simple_post_overlay_engine(struct adf_device *dev,
		const __u32 *formats, size_t n_formats,
		adf_id_t interface, adf_id_t *overlay_engine)
		{
		adf_id_t *engs;
		ssize_t n_engs = adf_overlay_engines_for_interface(dev, interface, &engs);

		if (n_engs <= 0)
		return false;

		adf_id_t *filtered_engs;
		ssize_t n_filtered_engs = adf_overlay_engines_filter_by_format(dev,
		formats, n_formats, engs, n_engs, &filtered_engs);
		free(engs);

		if (n_filtered_engs <= 0)
		return false;

		*overlay_engine = filtered_engs[0];
		free(filtered_engs);
		return true;
		}

		static const __u32 any_rgb_format[] = {
		DRM_FORMAT_C8,
		DRM_FORMAT_RGB332,
		DRM_FORMAT_BGR233,
		DRM_FORMAT_XRGB1555,
		DRM_FORMAT_XBGR1555,
		DRM_FORMAT_RGBX5551,
		DRM_FORMAT_BGRX5551,
		DRM_FORMAT_ARGB1555,
		DRM_FORMAT_ABGR1555,
		DRM_FORMAT_RGBA5551,
		DRM_FORMAT_BGRA5551,
		DRM_FORMAT_RGB565,
		DRM_FORMAT_BGR565,
		DRM_FORMAT_RGB888,
		DRM_FORMAT_BGR888,
		DRM_FORMAT_XRGB8888,
		DRM_FORMAT_XBGR8888,
		DRM_FORMAT_RGBX8888,
		DRM_FORMAT_BGRX8888,
		DRM_FORMAT_XRGB2101010,
		DRM_FORMAT_XBGR2101010,
		DRM_FORMAT_RGBX1010102,
		DRM_FORMAT_BGRX1010102,
		DRM_FORMAT_ARGB2101010,
		DRM_FORMAT_ABGR2101010,
		DRM_FORMAT_RGBA1010102,
		DRM_FORMAT_BGRA1010102,
		DRM_FORMAT_ARGB8888,
		DRM_FORMAT_ABGR8888,
		DRM_FORMAT_RGBA8888,
		DRM_FORMAT_BGRA8888,
		};

		int adf_find_simple_post_configuration(struct adf_device *dev,
		const __u32 *formats, size_t n_formats,
		adf_id_t interface, adf_id_t overlay_engine)
		{
		adf_id_t *intfs;
		ssize_t n_intfs = adf_interfaces(dev, &intfs);

		if (n_intfs < 0)
		return n_intfs;
		else if (!n_intfs)
		return -ENODEV;

		adf_id_t *primary_intfs;
		ssize_t n_primary_intfs = adf_interfaces_filter_by_flag(dev,
		ADF_INTF_FLAG_PRIMARY, intfs, n_intfs, &primary_intfs);
		free(intfs);

		if (n_primary_intfs < 0)
		return n_primary_intfs;
		else if (!n_primary_intfs)
		return -ENODEV;

		if (!formats) {
		formats = any_rgb_format;
		n_formats = sizeof(any_rgb_format) / sizeof(any_rgb_format[0]);
		}

		bool found = false;
		ssize_t i = 0;
		for (i = 0; i < n_primary_intfs; i++) {
		found = adf_find_simple_post_overlay_engine(dev, formats, n_formats,
		primary_intfs[i], overlay_engine);
		if (found) {
		*interface = primary_intfs[i];
		break;
		}
		}
		free(primary_intfs);

		if (!found)
		return -ENODEV;

		return 0;
		}

adf/libadf/include/adf/adf.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -231,6 +231,20 @@ int adf_read_event(int fd, struct adf_event **event);
		*/
		void adf_format_str(__u32 format, char buf[ADF_FORMAT_STR_SIZE]);

		/**
		* Finds an appropriate interface and overlay engine for a simple post.
		*
		* Specifically, finds the primary interface, and an overlay engine
		* that can be attached to the primary interface and supports one of the
		* specified formats. The caller may pass a NULL formats list, to indicate that
		* any RGB format is acceptable.
		*
		* On error, returns -errno.
		*/
		int adf_find_simple_post_configuration(struct adf_device *dev,
		const __u32 *formats, size_t n_formats,
		adf_id_t interface, adf_id_t overlay_engine);

		__END_DECLS

		#endif /* _LIBADF_ADF_H_ */