From 0036cca83011affbe91ec5434ced5041be3e5d4a Mon Sep 17 00:00:00 2001
From: Pawel Osciak <posciak@chromium.org>
Date: Mon, 11 Jul 2016 18:25:17 +0900
Subject: [PATCH] CHROMIUM: v4l: Add VP9 low-level decoder API controls.

Signed-off-by: Pawel Osciak <posciak@chromium.org>

[fbuergisser@chromium.org: original patch modified as h264 headers were moved
 to other header files which cause a failure when applying the original patch.
 Keeping part of the original patch for context.]

[acourbot@chromium.org: moved controls to a "legacy" VP9 files as we
will merge the upstream ones.]
---
 include/uapi/linux/media/vp9-ctrls-legacy.h | 162 ++++++++++++++++++++
 include/uapi/linux/videodev2.h              |   2 +
 2 files changed, 164 insertions(+)
 create mode 100644 include/uapi/linux/media/vp9-ctrls-legacy.h

diff --git a/include/uapi/linux/media/vp9-ctrls-legacy.h b/include/uapi/linux/media/vp9-ctrls-legacy.h
new file mode 100644
index 0000000..411fca7
--- /dev/null
+++ b/include/uapi/linux/media/vp9-ctrls-legacy.h
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * These are the VP9 state controls for use with stateless VP9
+ * codec drivers.
+ *
+ * These headers are legacy VP9 headers and specific to Chromium only.
+ * Chromium needs to support pre v4.19 headers but will be removed in the
+ * future when Chromium will support only v4.19 and onward.
+ */
+
+#ifndef __LINUX_MEDIA_VP9_CTRLS_LEGACY_H_
+#define __LINUX_MEDIA_VP9_CTRLS_LEGACY_H_
+
+#define V4L2_CID_MPEG_VIDEO_VP9_FRAME_HDR		(V4L2_CID_MPEG_BASE+591)
+#define V4L2_CID_MPEG_VIDEO_VP9_DECODE_PARAM		(V4L2_CID_MPEG_BASE+592)
+#define V4L2_CID_MPEG_VIDEO_VP9_ENTROPY			(V4L2_CID_MPEG_BASE+593)
+
+#define V4L2_VP9_SGMNT_PARAM_FLAG_ENABLED		0x01
+#define V4L2_VP9_SGMNT_PARAM_FLAG_UPDATE_MAP		0x02
+#define V4L2_VP9_SGMNT_PARAM_FLAG_TEMPORAL_UPDATE	0x04
+#define V4L2_VP9_SGMNT_PARAM_FLAG_UPDATE_DATA		0x08
+#define V4L2_VP9_SGMNT_PARAM_FLAG_ABS_OR_DELTA_UPDATE	0x10
+struct v4l2_vp9_segmentation_params {
+	__u8 tree_probs[7];
+	__u8 pred_probs[3];
+	__u8 feature_enabled[8][4];
+	__s16 feature_data[8][4];
+
+	__u8 flags;
+};
+
+#define V4L2_VP9_LOOP_FLTR_FLAG_DELTA_ENABLED		0x01
+#define V4L2_VP9_LOOP_FLTR_FLAG_DELTA_UPDATE		0x02
+struct v4l2_vp9_loop_filter_params {
+	__u8 level;
+	__u8 sharpness;
+	__s8 deltas[4];
+	__s8 mode_deltas[2];
+	__u8 lvl_lookup[8][4][2];
+
+	__u8 flags;
+};
+
+#define V4L2_VP9_QUANT_PARAMS_FLAG_LOSSLESS		0x01
+struct v4l2_vp9_quantization_params {
+	__u8 base_q_idx;
+	__s8 delta_q_y_dc;
+	__s8 delta_q_uv_dc;
+	__s8 delta_q_uv_ac;
+
+	__u8 flags;
+};
+
+#define V4L2_VP9_FRAME_HDR_FLAG_SHOW_FRAME	0x01
+/* Error resilient mode enabled flag */
+#define V4L2_VP9_FRAME_HDR_FLAG_ERR_RES		0x02
+#define V4L2_VP9_FRAME_HDR_FLAG_FRAME_INTRA	0x04
+#define V4L2_VP9_FRAME_HDR_ALLOW_HIGH_PREC_MV	0x08
+#define V4L2_VP9_FRAME_HDR_REFRESH_FRAME_CTX	0x10
+#define V4L2_VP9_FRAME_HDR_PARALLEL_DEC_MODE	0x20
+struct v4l2_ctrl_vp9_frame_hdr {
+	__u8 profile;
+	/* 0: keyframe, 1: non-keyframe */
+	__u8 frame_type;
+
+	__u8 bit_depth;
+	__u8 color_space;
+	__u8 color_range;
+	__u8 subsampling_x;
+	__u8 subsampling_y;
+
+	__u32 frame_width;
+	__u32 frame_height;
+	__u32 render_width;
+	__u32 render_height;
+
+	__u8 reset_frame_context;
+
+	__u8 interpolation_filter;
+	__u8 frame_context_idx;
+
+	struct v4l2_vp9_loop_filter_params lf_params;
+	struct v4l2_vp9_quantization_params quant_params;
+	struct v4l2_vp9_segmentation_params sgmnt_params;
+
+	__u8 tile_cols_log2;
+	__u8 tile_rows_log2;
+
+	__u16 header_size_in_bytes;
+
+	__u8 flags;
+};
+
+struct v4l2_vp9_reference_frame {
+	 /* v4l2_buffer index */
+	__u32 buf_index;
+
+	__u32 frame_width;
+	__u32 frame_height;
+	__u8 bit_depth;
+	__u8 subsampling_x;
+	__u8 subsampling_y;
+};
+
+struct v4l2_ctrl_vp9_decode_param {
+	/* v4l2_buffer index for all reference frames (frame slots). */
+	__u32 ref_frames[8];
+
+	/* Active reference frames, [0]: last, [1]: golden, [2]: altref */
+	struct v4l2_vp9_reference_frame active_ref_frames[3];
+};
+
+struct v4l2_vp9_entropy_ctx {
+	__u8 tx_probs_8x8[2][1];
+	__u8 tx_probs_16x16[2][2];
+	__u8 tx_probs_32x32[2][3];
+
+	__u8 coef_probs[4][2][2][6][6][3];
+	__u8 skip_prob[3];
+	__u8 inter_mode_probs[7][3];
+	__u8 interp_filter_probs[4][2];
+	__u8 is_inter_prob[4];
+
+	__u8 comp_mode_prob[5];
+	__u8 single_ref_prob[5][2];
+	__u8 comp_ref_prob[5];
+
+	__u8 y_mode_probs[4][9];
+	__u8 uv_mode_probs[10][9];
+
+	__u8 partition_probs[16][3];
+
+	__u8 mv_joint_probs[3];
+	__u8 mv_sign_prob[2];
+	__u8 mv_class_probs[2][10];
+	__u8 mv_class0_bit_prob[2];
+	__u8 mv_bits_prob[2][10];
+	__u8 mv_class0_fr_probs[2][2][3];
+	__u8 mv_fr_probs[2][3];
+	__u8 mv_class0_hp_prob[2];
+	__u8 mv_hp_prob[2];
+};
+
+/* Entropy context state for current frame (frame_context_idx). */
+struct v4l2_ctrl_vp9_entropy {
+	__u8 tx_mode;
+	__u8 reference_mode;
+
+	/* Entropy context after load_probs2(). */
+	struct v4l2_vp9_entropy_ctx initial_entropy_ctx;
+
+	/*
+	 * Entropy context for the current decoding state: when passed to the
+	 * driver, contains the state of initial_entropy_ctx after parsing the
+	 * compressed header. After decoding is done (after vb2_buffer_done() is
+	 * called on the associated buffer), state as after refresh_probs().
+	 */
+	struct v4l2_vp9_entropy_ctx current_entropy_ctx;
+};
+
+
+#endif /* __LINUX_MEDIA_VP9_CTRLS_LEGACY_H_ */
\ No newline at end of file
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 41e0808..2d8f794 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -67,6 +67,7 @@
 #include <linux/v4l2-controls.h>
 #include <linux/media/h264-ctrls-legacy.h>
 #include <linux/media/vp8-ctrls-legacy.h>
+#include <linux/media/vp9-ctrls-legacy.h>
 
 /*
  * Common stuff for both V4L1 and V4L2
@@ -639,6 +640,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_VP8      v4l2_fourcc('V', 'P', '8', '0') /* VP8 */
 #define V4L2_PIX_FMT_VP8_FRAME v4l2_fourcc('V', 'P', '8', 'F') /* VP8 parsed frames */
 #define V4L2_PIX_FMT_VP9      v4l2_fourcc('V', 'P', '9', '0') /* VP9 */
+#define V4L2_PIX_FMT_VP9_FRAME v4l2_fourcc('V', 'P', '9', 'F') /* VP9 parsed frames */
 
 /*  Vendor-specific formats   */
 #define V4L2_PIX_FMT_CPIA1    v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */
-- 
2.26.2