[Mesa-dev] [PATCH 1/3] radeon/uvd: handle HEVC main 10 decode

[Boyuan Zhang]

Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
---
 src/gallium/drivers/radeon/radeon_uvd.c | 69 +++++++++++++++++++++++++++------
 1 file changed, 58 insertions(+), 11 deletions(-)

diff --git a/src/gallium/drivers/radeon/radeon_uvd.c b/src/gallium/drivers/radeon/radeon_uvd.c
index 6ea07be..164a2ae 100644
--- a/src/gallium/drivers/radeon/radeon_uvd.c
+++ b/src/gallium/drivers/radeon/radeon_uvd.c
@@ -207,7 +207,7 @@ static uint32_t profile2stream_type(struct ruvd_decoder *dec, unsigned family)
 	}
 }
 
-static unsigned calc_ctx_size(struct ruvd_decoder *dec)
+static unsigned calc_ctx_size_h265_main(struct ruvd_decoder *dec)
 {
 	unsigned width = align(dec->base.width, VL_MACROBLOCK_WIDTH);
 	unsigned height = align(dec->base.height, VL_MACROBLOCK_HEIGHT);
@@ -224,6 +224,39 @@ static unsigned calc_ctx_size(struct ruvd_decoder *dec)
 	return ((width + 255) / 16) * ((height + 255) / 16) * 16 * max_references + 52 * 1024;
 }
 
+static unsigned calc_ctx_size_h265_main10(struct ruvd_decoder *dec, struct pipe_h265_picture_desc *pic)
+{
+	unsigned block_size, log2_ctb_size, width_in_ctb, height_in_ctb, num_16x16_block_per_ctb;
+	unsigned context_buffer_size_per_ctb_row, cm_buffer_size, max_mb_address, db_left_tile_pxl_size;
+	unsigned db_left_tile_ctx_size = 4096 / 16 * (32 + 16 * 4);
+
+	unsigned width = align(dec->base.width, VL_MACROBLOCK_WIDTH);
+	unsigned height = align(dec->base.height, VL_MACROBLOCK_HEIGHT);
+	unsigned coeff_10bit = (pic->pps->sps->bit_depth_luma_minus8 || pic->pps->sps->bit_depth_chroma_minus8) ? 2 : 1;
+
+	unsigned max_references = dec->base.max_references + 1;
+
+	if (dec->base.width * dec->base.height >= 4096*2000)
+		max_references = MAX2(max_references, 8);
+	else
+		max_references = MAX2(max_references, 17);
+
+	block_size = (1 << (pic->pps->sps->log2_min_luma_coding_block_size_minus3 + 3));
+	log2_ctb_size = block_size + pic->pps->sps->log2_diff_max_min_luma_coding_block_size;
+
+	width_in_ctb = (width + ((1 << log2_ctb_size) - 1)) >> log2_ctb_size;
+	height_in_ctb = (height + ((1 << log2_ctb_size) - 1)) >> log2_ctb_size;
+
+	num_16x16_block_per_ctb = ((1 << log2_ctb_size) >> 4) * ((1 << log2_ctb_size) >> 4);
+	context_buffer_size_per_ctb_row = align(width_in_ctb * num_16x16_block_per_ctb * 16, 256);
+	max_mb_address = (unsigned) ceil(height * 8 / 2048.0);
+
+	cm_buffer_size = max_references * context_buffer_size_per_ctb_row * height_in_ctb;
+	db_left_tile_pxl_size = coeff_10bit * (max_mb_address * 2 * 2048 + 1024);
+
+	return cm_buffer_size + db_left_tile_ctx_size + db_left_tile_pxl_size;
+}
+
 /* calculate size of reference picture buffer */
 static unsigned calc_dpb_size(struct ruvd_decoder *dec)
 {
@@ -305,7 +338,10 @@ static unsigned calc_dpb_size(struct ruvd_decoder *dec)
 
 		width = align (width, 16);
 		height = align (height, 16);
-		dpb_size = align((width * height * 3) / 2, 256) * max_references;
+		if (dec->base.profile == PIPE_VIDEO_PROFILE_HEVC_MAIN_10)
+			dpb_size = align((width * height * 9) / 4, 256) * max_references;
+		else
+			dpb_size = align((width * height * 3) / 2, 256) * max_references;
 		break;
 
 	case PIPE_VIDEO_FORMAT_VC1:
@@ -593,6 +629,15 @@ static struct ruvd_h265 get_h265_msg(struct ruvd_decoder *dec, struct pipe_video
 			result.direct_reflist[i][j] = pic->RefPicList[i][j];
 	}
 
+	if ((pic->base.profile == PIPE_VIDEO_PROFILE_HEVC_MAIN_10) &&
+		(target->buffer_format == PIPE_FORMAT_NV12)) {
+		result.p010_mode = 0;
+		result.luma_10to8 = 5;
+		result.chroma_10to8 = 5;
+		result.sclr_luma10to8 = 4;
+		result.sclr_chroma10to8 = 4;
+	}
+
 	/* TODO
 	result.highestTid;
 	result.isNonRef;
@@ -968,6 +1013,17 @@ static void ruvd_end_frame(struct pipe_video_codec *decoder,
 
 	case PIPE_VIDEO_FORMAT_HEVC:
 		dec->msg->body.decode.codec.h265 = get_h265_msg(dec, target, (struct pipe_h265_picture_desc*)picture);
+		if (dec->ctx.res == NULL) {
+			unsigned ctx_size;
+			if (dec->base.profile == PIPE_VIDEO_PROFILE_HEVC_MAIN_10)
+				ctx_size = calc_ctx_size_h265_main10(dec, (struct pipe_h265_picture_desc*)picture);
+			else
+				ctx_size = calc_ctx_size_h265_main(dec);
+			if (!rvid_create_buffer(dec->screen, &dec->ctx, ctx_size, PIPE_USAGE_DEFAULT)) {
+				RVID_ERR("Can't allocated context buffer.\n");
+			}
+			rvid_clear_buffer(decoder->context, &dec->ctx);
+		}
 		break;
 
 	case PIPE_VIDEO_FORMAT_VC1:
@@ -1120,15 +1176,6 @@ struct pipe_video_codec *ruvd_create_decoder(struct pipe_context *context,
 
 	rvid_clear_buffer(context, &dec->dpb);
 
-	if (u_reduce_video_profile(dec->base.profile) == PIPE_VIDEO_FORMAT_HEVC) {
-		unsigned ctx_size = calc_ctx_size(dec);
-		if (!rvid_create_buffer(dec->screen, &dec->ctx, ctx_size, PIPE_USAGE_DEFAULT)) {
-			RVID_ERR("Can't allocated context buffer.\n");
-			goto error;
-		}
-		rvid_clear_buffer(context, &dec->ctx);
-	}
-
 	map_msg_fb_it_buf(dec);
 	dec->msg->size = sizeof(*dec->msg);
 	dec->msg->msg_type = RUVD_MSG_CREATE;
-- 
2.1.4