--- /dev/null
+/*
+ * Copyright (C) STMicroelectronics SA 2015
+ * Authors: Yannick Fertre <yannick.fertre@st.com>
+ * Hugues Fruchet <hugues.fruchet@st.com>
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include "hva.h"
+#include "hva-hw.h"
+
+#define MAX_SPS_PPS_SIZE 128
+
+#define BITSTREAM_OFFSET_MASK 0x7F
+
+/* video max size*/
+#define H264_MAX_SIZE_W 1920
+#define H264_MAX_SIZE_H 1920
+
+/* macroBlocs number (width & height) */
+#define MB_W(w) ((w + 0xF) / 0x10)
+#define MB_H(h) ((h + 0xF) / 0x10)
+
+/* formula to get temporal or spatial data size */
+#define DATA_SIZE(w, h) (MB_W(w) * MB_H(h) * 16)
+
+#define SEARCH_WINDOW_BUFFER_MAX_SIZE(w) ((4 * MB_W(w) + 42) * 256 * 3 / 2)
+#define CABAC_CONTEXT_BUFFER_MAX_SIZE(w) (MB_W(w) * 16)
+#define CTX_MB_BUFFER_MAX_SIZE(w) (MB_W(w) * 16 * 8)
+#define SLICE_HEADER_SIZE (4 * 16)
+#define BRC_DATA_SIZE (5 * 16)
+
+/* source buffer copy in YUV 420 MB-tiled format with size=16*256*3/2 */
+#define CURRENT_WINDOW_BUFFER_MAX_SIZE (16 * 256 * 3 / 2)
+
+/*
+ * 4 lines of pixels (in Luma, Chroma blue and Chroma red) of top MB
+ * for deblocking with size=4*16*MBx*2
+ */
+#define LOCAL_RECONSTRUCTED_BUFFER_MAX_SIZE(w) (4 * 16 * MB_W(w) * 2)
+
+/* factor for bitrate and cpb buffer size max values if profile >= high */
+#define H264_FACTOR_HIGH 1200
+
+/* factor for bitrate and cpb buffer size max values if profile < high */
+#define H264_FACTOR_BASELINE 1000
+
+/* number of bytes for NALU_TYPE_FILLER_DATA header and footer */
+#define H264_FILLER_DATA_SIZE 6
+
+struct h264_profile {
+ enum v4l2_mpeg_video_h264_level level;
+ u32 max_mb_per_seconds;
+ u32 max_frame_size;
+ u32 max_bitrate;
+ u32 max_cpb_size;
+ u32 min_comp_ratio;
+};
+
+static const struct h264_profile h264_infos_list[] = {
+ {V4L2_MPEG_VIDEO_H264_LEVEL_1_0, 1485, 99, 64, 175, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_1B, 1485, 99, 128, 350, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_1_1, 3000, 396, 192, 500, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_1_2, 6000, 396, 384, 1000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_1_3, 11880, 396, 768, 2000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_2_0, 11880, 396, 2000, 2000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_2_1, 19800, 792, 4000, 4000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_2_2, 20250, 1620, 4000, 4000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_3_0, 40500, 1620, 10000, 10000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_3_1, 108000, 3600, 14000, 14000, 4},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_3_2, 216000, 5120, 20000, 20000, 4},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_4_0, 245760, 8192, 20000, 25000, 4},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_4_1, 245760, 8192, 50000, 62500, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_4_2, 522240, 8704, 50000, 62500, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_5_0, 589824, 22080, 135000, 135000, 2},
+ {V4L2_MPEG_VIDEO_H264_LEVEL_5_1, 983040, 36864, 240000, 240000, 2}
+};
+
+enum hva_brc_type {
+ BRC_TYPE_NONE = 0,
+ BRC_TYPE_CBR = 1,
+ BRC_TYPE_VBR = 2,
+ BRC_TYPE_VBR_LOW_DELAY = 3
+};
+
+enum hva_entropy_coding_mode {
+ CAVLC = 0,
+ CABAC = 1
+};
+
+enum hva_picture_coding_type {
+ PICTURE_CODING_TYPE_I = 0,
+ PICTURE_CODING_TYPE_P = 1,
+ PICTURE_CODING_TYPE_B = 2
+};
+
+enum hva_h264_sampling_mode {
+ SAMPLING_MODE_NV12 = 0,
+ SAMPLING_MODE_UYVY = 1,
+ SAMPLING_MODE_RGB3 = 3,
+ SAMPLING_MODE_XRGB4 = 4,
+ SAMPLING_MODE_NV21 = 8,
+ SAMPLING_MODE_VYUY = 9,
+ SAMPLING_MODE_BGR3 = 11,
+ SAMPLING_MODE_XBGR4 = 12,
+ SAMPLING_MODE_RGBX4 = 20,
+ SAMPLING_MODE_BGRX4 = 28
+};
+
+enum hva_h264_nalu_type {
+ NALU_TYPE_UNKNOWN = 0,
+ NALU_TYPE_SLICE = 1,
+ NALU_TYPE_SLICE_DPA = 2,
+ NALU_TYPE_SLICE_DPB = 3,
+ NALU_TYPE_SLICE_DPC = 4,
+ NALU_TYPE_SLICE_IDR = 5,
+ NALU_TYPE_SEI = 6,
+ NALU_TYPE_SPS = 7,
+ NALU_TYPE_PPS = 8,
+ NALU_TYPE_AU_DELIMITER = 9,
+ NALU_TYPE_SEQ_END = 10,
+ NALU_TYPE_STREAM_END = 11,
+ NALU_TYPE_FILLER_DATA = 12,
+ NALU_TYPE_SPS_EXT = 13,
+ NALU_TYPE_PREFIX_UNIT = 14,
+ NALU_TYPE_SUBSET_SPS = 15,
+ NALU_TYPE_SLICE_AUX = 19,
+ NALU_TYPE_SLICE_EXT = 20
+};
+
+enum hva_h264_sei_payload_type {
+ SEI_BUFFERING_PERIOD = 0,
+ SEI_PICTURE_TIMING = 1,
+ SEI_STEREO_VIDEO_INFO = 21,
+ SEI_FRAME_PACKING_ARRANGEMENT = 45
+};
+
+/**
+ * stereo Video Info struct
+ */
+struct hva_h264_stereo_video_sei {
+ u8 field_views_flag;
+ u8 top_field_is_left_view_flag;
+ u8 current_frame_is_left_view_flag;
+ u8 next_frame_is_second_view_flag;
+ u8 left_view_self_contained_flag;
+ u8 right_view_self_contained_flag;
+};
+
+/**
+ * @frame_width: width in pixels of the buffer containing the input frame
+ * @frame_height: height in pixels of the buffer containing the input frame
+ * @frame_num: the parameter to be written in the slice header
+ * @picture_coding_type: type I, P or B
+ * @pic_order_cnt_type: POC mode, as defined in H264 std : can be 0,1,2
+ * @first_picture_in_sequence: flag telling to encoder that this is the
+ * first picture in a video sequence.
+ * Used for VBR
+ * @slice_size_type: 0 = no constraint to close the slice
+ * 1= a slice is closed as soon as the slice_mb_size limit
+ * is reached
+ * 2= a slice is closed as soon as the slice_byte_size limit
+ * is reached
+ * 3= a slice is closed as soon as either the slice_byte_size
+ * limit or the slice_mb_size limit is reached
+ * @slice_mb_size: defines the slice size in number of macroblocks
+ * (used when slice_size_type=1 or slice_size_type=3)
+ * @ir_param_option: defines the number of macroblocks per frame to be
+ * refreshed by AIR algorithm OR the refresh period
+ * by CIR algorithm
+ * @intra_refresh_type: enables the adaptive intra refresh algorithm.
+ * Disable=0 / Adaptative=1 and Cycle=2 as intra refresh
+ * @use_constrained_intra_flag: constrained_intra_pred_flag from PPS
+ * @transform_mode: controls the use of 4x4/8x8 transform mode
+ * @disable_deblocking_filter_idc:
+ * 0: specifies that all luma and chroma block edges of
+ * the slice are filtered.
+ * 1: specifies that deblocking is disabled for all block
+ * edges of the slice.
+ * 2: specifies that all luma and chroma block edges of
+ * the slice are filtered with exception of the block edges
+ * that coincide with slice boundaries
+ * @slice_alpha_c0_offset_div2: to be written in slice header,
+ * controls deblocking
+ * @slice_beta_offset_div2: to be written in slice header,
+ * controls deblocking
+ * @encoder_complexity: encoder complexity control (IME).
+ * 0 = I_16x16, P_16x16, Full ME Complexity
+ * 1 = I_16x16, I_NxN, P_16x16, Full ME Complexity
+ * 2 = I_16x16, I_NXN, P_16x16, P_WxH, Full ME Complexity
+ * 4 = I_16x16, P_16x16, Reduced ME Complexity
+ * 5 = I_16x16, I_NxN, P_16x16, Reduced ME Complexity
+ * 6 = I_16x16, I_NXN, P_16x16, P_WxH, Reduced ME Complexity
+ * @chroma_qp_index_offset: coming from picture parameter set
+ * (PPS see [H.264 STD] 7.4.2.2)
+ * @entropy_coding_mode: entropy coding mode.
+ * 0 = CAVLC
+ * 1 = CABAC
+ * @brc_type: selects the bit-rate control algorithm
+ * 0 = constant Qp, (no BRC)
+ * 1 = CBR
+ * 2 = VBR
+ * @quant: Quantization param used in case of fix QP encoding (no BRC)
+ * @non_VCL_NALU_Size: size of non-VCL NALUs (SPS, PPS, filler),
+ * used by BRC
+ * @cpb_buffer_size: size of Coded Picture Buffer, used by BRC
+ * @bit_rate: target bitrate, for BRC
+ * @qp_min: min QP threshold
+ * @qp_max: max QP threshold
+ * @framerate_num: target framerate numerator , used by BRC
+ * @framerate_den: target framerate denomurator , used by BRC
+ * @delay: End-to-End Initial Delay
+ * @strict_HRD_compliancy: flag for HDR compliancy (1)
+ * May impact quality encoding
+ * @addr_source_buffer: address of input frame buffer for current frame
+ * @addr_fwd_Ref_Buffer: address of reference frame buffer
+ * @addr_rec_buffer: address of reconstructed frame buffer
+ * @addr_output_bitstream_start: output bitstream start address
+ * @addr_output_bitstream_end: output bitstream end address
+ * @addr_external_sw : address of external search window
+ * @addr_lctx : address of context picture buffer
+ * @addr_local_rec_buffer: address of local reconstructed buffer
+ * @addr_spatial_context: address of spatial context buffer
+ * @bitstream_offset: offset in bits between aligned bitstream start
+ * address and first bit to be written by HVA.
+ * Range value is [0..63]
+ * @sampling_mode: Input picture format .
+ * 0: YUV420 semi_planar Interleaved
+ * 1: YUV422 raster Interleaved
+ * @addr_param_out: address of output parameters structure
+ * @addr_scaling_matrix: address to the coefficient of
+ * the inverse scaling matrix
+ * @addr_scaling_matrix_dir: address to the coefficient of
+ * the direct scaling matrix
+ * @addr_cabac_context_buffer: address of cabac context buffer
+ * @GmvX: Input information about the horizontal global displacement of
+ * the encoded frame versus the previous one
+ * @GmvY: Input information about the vertical global displacement of
+ * the encoded frame versus the previous one
+ * @window_width: width in pixels of the window to be encoded inside
+ * the input frame
+ * @window_height: width in pixels of the window to be encoded inside
+ * the input frame
+ * @window_horizontal_offset: horizontal offset in pels for input window
+ * within input frame
+ * @window_vertical_offset: vertical offset in pels for input window
+ * within input frame
+ * @addr_roi: Map of QP offset for the Region of Interest algorithm and
+ * also used for Error map.
+ * Bit 0-6 used for qp offset (value -64 to 63).
+ * Bit 7 used to force intra
+ * @addr_slice_header: address to slice header
+ * @slice_header_size_in_bits: size in bits of the Slice header
+ * @slice_header_offset0: Slice header offset where to insert
+ * first_Mb_in_slice
+ * @slice_header_offset1: Slice header offset where to insert
+ * slice_qp_delta
+ * @slice_header_offset2: Slice header offset where to insert
+ * num_MBs_in_slice
+ * @slice_synchro_enable: enable "slice ready" interrupt after each slice
+ * @max_slice_number: Maximum number of slice in a frame
+ * (0 is strictly forbidden)
+ * @rgb2_yuv_y_coeff: Four coefficients (C0C1C2C3) to convert from RGB to
+ * YUV for the Y component.
+ * Y = C0*R + C1*G + C2*B + C3 (C0 is on byte 0)
+ * @rgb2_yuv_u_coeff: four coefficients (C0C1C2C3) to convert from RGB to
+ * YUV for the Y component.
+ * Y = C0*R + C1*G + C2*B + C3 (C0 is on byte 0)
+ * @rgb2_yuv_v_coeff: Four coefficients (C0C1C2C3) to convert from RGB to
+ * YUV for the U (Cb) component.
+ * U = C0*R + C1*G + C2*B + C3 (C0 is on byte 0)
+ * @slice_byte_size: maximum slice size in bytes
+ * (used when slice_size_type=2 or slice_size_type=3)
+ * @max_air_intra_mb_nb: Maximum number of intra macroblock in a frame
+ * for the AIR algorithm
+ * @brc_no_skip: Disable skipping in the Bitrate Controller
+ * @addr_brc_in_out_parameter: address of static buffer for BRC parameters
+ */
+struct hva_h264_td {
+ u16 frame_width;
+ u16 frame_height;
+ u32 frame_num;
+ u16 picture_coding_type;
+ u16 reserved1;
+ u16 pic_order_cnt_type;
+ u16 first_picture_in_sequence;
+ u16 slice_size_type;
+ u16 reserved2;
+ u32 slice_mb_size;
+ u16 ir_param_option;
+ u16 intra_refresh_type;
+ u16 use_constrained_intra_flag;
+ u16 transform_mode;
+ u16 disable_deblocking_filter_idc;
+ s16 slice_alpha_c0_offset_div2;
+ s16 slice_beta_offset_div2;
+ u16 encoder_complexity;
+ s16 chroma_qp_index_offset;
+ u16 entropy_coding_mode;
+ u16 brc_type;
+ u16 quant;
+ u32 non_vcl_nalu_size;
+ u32 cpb_buffer_size;
+ u32 bit_rate;
+ u16 qp_min;
+ u16 qp_max;
+ u16 framerate_num;
+ u16 framerate_den;
+ u16 delay;
+ u16 strict_hrd_compliancy;
+ u32 addr_source_buffer;
+ u32 addr_fwd_ref_buffer;
+ u32 addr_rec_buffer;
+ u32 addr_output_bitstream_start;
+ u32 addr_output_bitstream_end;
+ u32 addr_external_sw;
+ u32 addr_lctx;
+ u32 addr_local_rec_buffer;
+ u32 addr_spatial_context;
+ u16 bitstream_offset;
+ u16 sampling_mode;
+ u32 addr_param_out;
+ u32 addr_scaling_matrix;
+ u32 addr_scaling_matrix_dir;
+ u32 addr_cabac_context_buffer;
+ u32 reserved3;
+ u32 reserved4;
+ s16 gmv_x;
+ s16 gmv_y;
+ u16 window_width;
+ u16 window_height;
+ u16 window_horizontal_offset;
+ u16 window_vertical_offset;
+ u32 addr_roi;
+ u32 addr_slice_header;
+ u16 slice_header_size_in_bits;
+ u16 slice_header_offset0;
+ u16 slice_header_offset1;
+ u16 slice_header_offset2;
+ u32 reserved5;
+ u32 reserved6;
+ u16 reserved7;
+ u16 reserved8;
+ u16 slice_synchro_enable;
+ u16 max_slice_number;
+ u32 rgb2_yuv_y_coeff;
+ u32 rgb2_yuv_u_coeff;
+ u32 rgb2_yuv_v_coeff;
+ u32 slice_byte_size;
+ u16 max_air_intra_mb_nb;
+ u16 brc_no_skip;
+ u32 addr_temporal_context;
+ u32 addr_brc_in_out_parameter;
+};
+
+/**
+ * @ slice_size: slice size
+ * @ slice_start_time: start time
+ * @ slice_stop_time: stop time
+ * @ slice_num: slice number
+ */
+struct hva_h264_slice_po {
+ u32 slice_size;
+ u32 slice_start_time;
+ u32 slice_end_time;
+ u32 slice_num;
+};
+
+/**
+ * @ bitstream_size: bitstream size
+ * @ dct_bitstream_size: dtc bitstream size
+ * @ stuffing_bits: number of stuffing bits inserted by the encoder
+ * @ removal_time: removal time of current frame (nb of ticks 1/framerate)
+ * @ hvc_start_time: hvc start time
+ * @ hvc_stop_time: hvc stop time
+ * @ slice_count: slice count
+ */
+struct hva_h264_po {
+ u32 bitstream_size;
+ u32 dct_bitstream_size;
+ u32 stuffing_bits;
+ u32 removal_time;
+ u32 hvc_start_time;
+ u32 hvc_stop_time;
+ u32 slice_count;
+ u32 reserved0;
+ struct hva_h264_slice_po slice_params[16];
+};
+
+struct hva_h264_task {
+ struct hva_h264_td td;
+ struct hva_h264_po po;
+};
+
+/**
+ * @seq_info: sequence information buffer
+ * @ref_frame: reference frame buffer
+ * @rec_frame: reconstructed frame buffer
+ * @task: task descriptor
+ */
+struct hva_h264_ctx {
+ struct hva_buffer *seq_info;
+ struct hva_buffer *ref_frame;
+ struct hva_buffer *rec_frame;
+ struct hva_buffer *task;
+};
+
+static int hva_h264_fill_slice_header(struct hva_ctx *pctx,
+ u8 *slice_header_addr,
+ struct hva_controls *ctrls,
+ int frame_num,
+ u16 *header_size,
+ u16 *header_offset0,
+ u16 *header_offset1,
+ u16 *header_offset2)
+{
+ /*
+ * with this HVA hardware version, part of the slice header is computed
+ * on host and part by hardware.
+ * The part of host is precomputed and available through this array.
+ */
+ struct device *dev = ctx_to_dev(pctx);
+ int cabac = V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC;
+ const unsigned char slice_header[] = { 0x00, 0x00, 0x00, 0x01,
+ 0x41, 0x34, 0x07, 0x00};
+ int idr_pic_id = frame_num % 2;
+ enum hva_picture_coding_type type;
+ u32 frame_order = frame_num % ctrls->gop_size;
+
+ if (!(frame_num % ctrls->gop_size))
+ type = PICTURE_CODING_TYPE_I;
+ else
+ type = PICTURE_CODING_TYPE_P;
+
+ memcpy(slice_header_addr, slice_header, sizeof(slice_header));
+
+ *header_size = 56;
+ *header_offset0 = 40;
+ *header_offset1 = 13;
+ *header_offset2 = 0;
+
+ if (type == PICTURE_CODING_TYPE_I) {
+ slice_header_addr[4] = 0x65;
+ slice_header_addr[5] = 0x11;
+
+ /* toggle the I frame */
+ if ((frame_num / ctrls->gop_size) % 2) {
+ *header_size += 4;
+ *header_offset1 += 4;
+ slice_header_addr[6] = 0x04;
+ slice_header_addr[7] = 0x70;
+
+ } else {
+ *header_size += 2;
+ *header_offset1 += 2;
+ slice_header_addr[6] = 0x09;
+ slice_header_addr[7] = 0xC0;
+ }
+ } else {
+ if (ctrls->entropy_mode == cabac) {
+ *header_size += 1;
+ *header_offset1 += 1;
+ slice_header_addr[7] = 0x80;
+ }
+ /*
+ * update slice header with P frame order
+ * frame order is limited to 16 (coded on 4bits only)
+ */
+ slice_header_addr[5] += ((frame_order & 0x0C) >> 2);
+ slice_header_addr[6] += ((frame_order & 0x03) << 6);
+ }
+
+ dev_dbg(dev,
+ "%s %s slice header order %d idrPicId %d header size %d\n",
+ pctx->name, __func__, frame_order, idr_pic_id, *header_size);
+ return 0;
+}
+
+static int hva_h264_fill_data_nal(struct hva_ctx *pctx,
+ unsigned int stuffing_bytes, u8 *addr,
+ unsigned int stream_size, unsigned int *size)
+{
+ struct device *dev = ctx_to_dev(pctx);
+ const u8 start[] = { 0x00, 0x00, 0x00, 0x01 };
+
+ dev_dbg(dev, "%s %s stuffing bytes %d\n", pctx->name, __func__,
+ stuffing_bytes);
+
+ if ((*size + stuffing_bytes + H264_FILLER_DATA_SIZE) > stream_size) {
+ dev_dbg(dev, "%s %s too many stuffing bytes %d\n",
+ pctx->name, __func__, stuffing_bytes);
+ return 0;
+ }
+
+ /* start code */
+ memcpy(addr + *size, start, sizeof(start));
+ *size += sizeof(start);
+
+ /* nal_unit_type */
+ addr[*size] = NALU_TYPE_FILLER_DATA;
+ *size += 1;
+
+ memset(addr + *size, 0xff, stuffing_bytes);
+ *size += stuffing_bytes;
+
+ addr[*size] = 0x80;
+ *size += 1;
+
+ return 0;
+}
+
+static int hva_h264_fill_sei_nal(struct hva_ctx *pctx,
+ enum hva_h264_sei_payload_type type,
+ u8 *addr, u32 *size)
+{
+ struct device *dev = ctx_to_dev(pctx);
+ const u8 start[] = { 0x00, 0x00, 0x00, 0x01 };
+ struct hva_h264_stereo_video_sei info;
+ u8 offset = 7;
+ u8 msg = 0;
+
+ /* start code */
+ memcpy(addr + *size, start, sizeof(start));
+ *size += sizeof(start);
+
+ /* nal_unit_type */
+ addr[*size] = NALU_TYPE_SEI;
+ *size += 1;
+
+ /* payload type */
+ addr[*size] = type;
+ *size += 1;
+
+ switch (type) {
+ case SEI_STEREO_VIDEO_INFO:
+ memset(&info, 0, sizeof(info));
+
+ /* set to top/bottom frame packing arrangement */
+ info.field_views_flag = 1;
+ info.top_field_is_left_view_flag = 1;
+
+ /* payload size */
+ addr[*size] = 1;
+ *size += 1;
+
+ /* payload */
+ msg = info.field_views_flag << offset--;
+
+ if (info.field_views_flag) {
+ msg |= info.top_field_is_left_view_flag <<
+ offset--;
+ } else {
+ msg |= info.current_frame_is_left_view_flag <<
+ offset--;
+ msg |= info.next_frame_is_second_view_flag <<
+ offset--;
+ }
+ msg |= info.left_view_self_contained_flag << offset--;
+ msg |= info.right_view_self_contained_flag << offset--;
+
+ addr[*size] = msg;
+ *size += 1;
+
+ addr[*size] = 0x80;
+ *size += 1;
+
+ return 0;
+ case SEI_BUFFERING_PERIOD:
+ case SEI_PICTURE_TIMING:
+ case SEI_FRAME_PACKING_ARRANGEMENT:
+ default:
+ dev_err(dev, "%s sei nal type not supported %d\n",
+ pctx->name, type);
+ return -EINVAL;
+ }
+}
+
+static int hva_h264_prepare_task(struct hva_ctx *pctx,
+ struct hva_h264_task *task,
+ struct hva_frame *frame,
+ struct hva_stream *stream)
+{
+ struct hva_dev *hva = ctx_to_hdev(pctx);
+ struct device *dev = ctx_to_dev(pctx);
+ struct hva_h264_ctx *ctx = (struct hva_h264_ctx *)pctx->priv;
+ struct hva_buffer *seq_info = ctx->seq_info;
+ struct hva_buffer *fwd_ref_frame = ctx->ref_frame;
+ struct hva_buffer *loc_rec_frame = ctx->rec_frame;
+ struct hva_h264_td *td = &task->td;
+ struct hva_controls *ctrls = &pctx->ctrls;
+ struct v4l2_fract *time_per_frame = &pctx->ctrls.time_per_frame;
+ int cavlc = V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC;
+ u32 frame_num = pctx->stream_num;
+ u32 addr_esram = hva->esram_addr;
+ enum v4l2_mpeg_video_h264_level level;
+ dma_addr_t paddr = 0;
+ u8 *slice_header_vaddr;
+ u32 frame_width = frame->info.aligned_width;
+ u32 frame_height = frame->info.aligned_height;
+ u32 max_cpb_buffer_size;
+ unsigned int payload = stream->bytesused;
+ u32 max_bitrate;
+
+ /* check width and height parameters */
+ if ((frame_width > max(H264_MAX_SIZE_W, H264_MAX_SIZE_H)) ||
+ (frame_height > max(H264_MAX_SIZE_W, H264_MAX_SIZE_H))) {
+ dev_err(dev,
+ "%s width(%d) or height(%d) exceeds limits (%dx%d)\n",
+ pctx->name, frame_width, frame_height,
+ H264_MAX_SIZE_W, H264_MAX_SIZE_H);
+ return -EINVAL;
+ }
+
+ level = ctrls->level;
+
+ memset(td, 0, sizeof(struct hva_h264_td));
+
+ td->frame_width = frame_width;
+ td->frame_height = frame_height;
+
+ /* set frame alignement */
+ td->window_width = frame_width;
+ td->window_height = frame_height;
+ td->window_horizontal_offset = 0;
+ td->window_vertical_offset = 0;
+
+ td->first_picture_in_sequence = (!frame_num) ? 1 : 0;
+
+ /* pic_order_cnt_type hard coded to '2' as only I & P frames */
+ td->pic_order_cnt_type = 2;
+
+ /* useConstrainedIntraFlag set to false for better coding efficiency */
+ td->use_constrained_intra_flag = false;
+ td->brc_type = (ctrls->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
+ ? BRC_TYPE_CBR : BRC_TYPE_VBR;
+
+ td->entropy_coding_mode = (ctrls->entropy_mode == cavlc) ? CAVLC :
+ CABAC;
+
+ td->bit_rate = ctrls->bitrate;
+
+ /* set framerate, framerate = 1 n/ time per frame */
+ if (time_per_frame->numerator >= 536) {
+ /*
+ * due to a hardware bug, framerate denominator can't exceed
+ * 536 (BRC overflow). Compute nearest framerate
+ */
+ td->framerate_den = 1;
+ td->framerate_num = (time_per_frame->denominator +
+ (time_per_frame->numerator >> 1) - 1) /
+ time_per_frame->numerator;
+
+ /*
+ * update bitrate to introduce a correction due to
+ * the new framerate
+ * new bitrate = (old bitrate * new framerate) / old framerate
+ */
+ td->bit_rate /= time_per_frame->numerator;
+ td->bit_rate *= time_per_frame->denominator;
+ td->bit_rate /= td->framerate_num;
+ } else {
+ td->framerate_den = time_per_frame->numerator;
+ td->framerate_num = time_per_frame->denominator;
+ }
+
+ /* compute maximum bitrate depending on profile */
+ if (ctrls->profile >= V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)
+ max_bitrate = h264_infos_list[level].max_bitrate *
+ H264_FACTOR_HIGH;
+ else
+ max_bitrate = h264_infos_list[level].max_bitrate *
+ H264_FACTOR_BASELINE;
+
+ /* check if bitrate doesn't exceed max size */
+ if (td->bit_rate > max_bitrate) {
+ dev_dbg(dev,
+ "%s bitrate (%d) larger than level and profile allow, clip to %d\n",
+ pctx->name, td->bit_rate, max_bitrate);
+ td->bit_rate = max_bitrate;
+ }
+
+ /* convert cpb_buffer_size in bits */
+ td->cpb_buffer_size = ctrls->cpb_size * 8000;
+
+ /* compute maximum cpb buffer size depending on profile */
+ if (ctrls->profile >= V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)
+ max_cpb_buffer_size =
+ h264_infos_list[level].max_cpb_size * H264_FACTOR_HIGH;
+ else
+ max_cpb_buffer_size =
+ h264_infos_list[level].max_cpb_size * H264_FACTOR_BASELINE;
+
+ /* check if cpb buffer size doesn't exceed max size */
+ if (td->cpb_buffer_size > max_cpb_buffer_size) {
+ dev_dbg(dev,
+ "%s cpb size larger than level %d allows, clip to %d\n",
+ pctx->name, td->cpb_buffer_size, max_cpb_buffer_size);
+ td->cpb_buffer_size = max_cpb_buffer_size;
+ }
+
+ /* enable skipping in the Bitrate Controller */
+ td->brc_no_skip = 0;
+
+ /* initial delay */
+ if ((ctrls->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) &&
+ td->bit_rate)
+ td->delay = 1000 * (td->cpb_buffer_size / td->bit_rate);
+ else
+ td->delay = 0;
+
+ switch (frame->info.pixelformat) {
+ case V4L2_PIX_FMT_NV12:
+ td->sampling_mode = SAMPLING_MODE_NV12;
+ break;
+ case V4L2_PIX_FMT_NV21:
+ td->sampling_mode = SAMPLING_MODE_NV21;
+ break;
+ default:
+ dev_err(dev, "%s invalid source pixel format\n",
+ pctx->name);
+ return -EINVAL;
+ }
+
+ /*
+ * fill matrix color converter (RGB to YUV)
+ * Y = 0,299 R + 0,587 G + 0,114 B
+ * Cb = -0,1687 R -0,3313 G + 0,5 B + 128
+ * Cr = 0,5 R - 0,4187 G - 0,0813 B + 128
+ */
+ td->rgb2_yuv_y_coeff = 0x12031008;
+ td->rgb2_yuv_u_coeff = 0x800EF7FB;
+ td->rgb2_yuv_v_coeff = 0x80FEF40E;
+
+ /* enable/disable transform mode */
+ td->transform_mode = ctrls->dct8x8;
+
+ /* encoder complexity fix to 2, ENCODE_I_16x16_I_NxN_P_16x16_P_WxH */
+ td->encoder_complexity = 2;
+
+ /* quant fix to 28, default VBR value */
+ td->quant = 28;
+
+ if (td->framerate_den == 0) {
+ dev_err(dev, "%s invalid framerate\n", pctx->name);
+ return -EINVAL;
+ }
+
+ /* if automatic framerate, deactivate bitrate controller */
+ if (td->framerate_num == 0)
+ td->brc_type = 0;
+
+ /* compliancy fix to true */
+ td->strict_hrd_compliancy = 1;
+
+ /* set minimum & maximum quantizers */
+ td->qp_min = clamp_val(ctrls->qpmin, 0, 51);
+ td->qp_max = clamp_val(ctrls->qpmax, 0, 51);
+
+ td->addr_source_buffer = frame->paddr;
+ td->addr_fwd_ref_buffer = fwd_ref_frame->paddr;
+ td->addr_rec_buffer = loc_rec_frame->paddr;
+
+ td->addr_output_bitstream_end = (u32)stream->paddr + stream->size;
+
+ td->addr_output_bitstream_start = (u32)stream->paddr;
+ td->bitstream_offset = (((u32)stream->paddr & 0xF) << 3) &
+ BITSTREAM_OFFSET_MASK;
+
+ td->addr_param_out = (u32)ctx->task->paddr +
+ offsetof(struct hva_h264_task, po);
+
+ /* swap spatial and temporal context */
+ if (frame_num % 2) {
+ paddr = seq_info->paddr;
+ td->addr_spatial_context = ALIGN(paddr, 0x100);
+ paddr = seq_info->paddr + DATA_SIZE(frame_width,
+ frame_height);
+ td->addr_temporal_context = ALIGN(paddr, 0x100);
+ } else {
+ paddr = seq_info->paddr;
+ td->addr_temporal_context = ALIGN(paddr, 0x100);
+ paddr = seq_info->paddr + DATA_SIZE(frame_width,
+ frame_height);
+ td->addr_spatial_context = ALIGN(paddr, 0x100);
+ }
+
+ paddr = seq_info->paddr + 2 * DATA_SIZE(frame_width, frame_height);
+
+ td->addr_brc_in_out_parameter = ALIGN(paddr, 0x100);
+
+ paddr = td->addr_brc_in_out_parameter + BRC_DATA_SIZE;
+ td->addr_slice_header = ALIGN(paddr, 0x100);
+ td->addr_external_sw = ALIGN(addr_esram, 0x100);
+
+ addr_esram += SEARCH_WINDOW_BUFFER_MAX_SIZE(frame_width);
+ td->addr_local_rec_buffer = ALIGN(addr_esram, 0x100);
+
+ addr_esram += LOCAL_RECONSTRUCTED_BUFFER_MAX_SIZE(frame_width);
+ td->addr_lctx = ALIGN(addr_esram, 0x100);
+
+ addr_esram += CTX_MB_BUFFER_MAX_SIZE(max(frame_width, frame_height));
+ td->addr_cabac_context_buffer = ALIGN(addr_esram, 0x100);
+
+ if (!(frame_num % ctrls->gop_size)) {
+ td->picture_coding_type = PICTURE_CODING_TYPE_I;
+ stream->vbuf.flags |= V4L2_BUF_FLAG_KEYFRAME;
+ } else {
+ td->picture_coding_type = PICTURE_CODING_TYPE_P;
+ stream->vbuf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
+ }
+
+ /* fill the slice header part */
+ slice_header_vaddr = seq_info->vaddr + (td->addr_slice_header -
+ seq_info->paddr);
+
+ hva_h264_fill_slice_header(pctx, slice_header_vaddr, ctrls, frame_num,
+ &td->slice_header_size_in_bits,
+ &td->slice_header_offset0,
+ &td->slice_header_offset1,
+ &td->slice_header_offset2);
+
+ td->chroma_qp_index_offset = 2;
+ td->slice_synchro_enable = 0;
+ td->max_slice_number = 1;
+
+ /*
+ * check the sps/pps header size for key frame only
+ * sps/pps header was previously fill by libv4l
+ * during qbuf of stream buffer
+ */
+ if ((stream->vbuf.flags == V4L2_BUF_FLAG_KEYFRAME) &&
+ (payload > MAX_SPS_PPS_SIZE)) {
+ dev_err(dev, "%s invalid sps/pps size %d\n", pctx->name,
+ payload);
+ return -EINVAL;
+ }
+
+ if (stream->vbuf.flags != V4L2_BUF_FLAG_KEYFRAME)
+ payload = 0;
+
+ /* add SEI nal (video stereo info) */
+ if (ctrls->sei_fp && hva_h264_fill_sei_nal(pctx, SEI_STEREO_VIDEO_INFO,
+ (u8 *)stream->vaddr,
+ &payload)) {
+ dev_err(dev, "%s fail to get SEI nal\n", pctx->name);
+ return -EINVAL;
+ }
+
+ /* fill size of non-VCL NAL units (SPS, PPS, filler and SEI) */
+ td->non_vcl_nalu_size = payload * 8;
+
+ /* compute bitstream offset & new start address of bitstream */
+ td->addr_output_bitstream_start += ((payload >> 4) << 4);
+ td->bitstream_offset += (payload - ((payload >> 4) << 4)) * 8;
+
+ stream->bytesused = payload;
+
+ return 0;
+}
+
+static unsigned int hva_h264_get_stream_size(struct hva_h264_task *task)
+{
+ struct hva_h264_po *po = &task->po;
+
+ return po->bitstream_size;
+}
+
+static u32 hva_h264_get_stuffing_bytes(struct hva_h264_task *task)
+{
+ struct hva_h264_po *po = &task->po;
+
+ return po->stuffing_bits >> 3;
+}
+
+static int hva_h264_open(struct hva_ctx *pctx)
+{
+ struct device *dev = ctx_to_dev(pctx);
+ struct hva_h264_ctx *ctx;
+ struct hva_dev *hva = ctx_to_hdev(pctx);
+ u32 frame_width = pctx->frameinfo.aligned_width;
+ u32 frame_height = pctx->frameinfo.aligned_height;
+ u32 size;
+ int ret;
+
+ /* check esram size necessary to encode a frame */
+ size = SEARCH_WINDOW_BUFFER_MAX_SIZE(frame_width) +
+ LOCAL_RECONSTRUCTED_BUFFER_MAX_SIZE(frame_width) +
+ CTX_MB_BUFFER_MAX_SIZE(max(frame_width, frame_height)) +
+ CABAC_CONTEXT_BUFFER_MAX_SIZE(frame_width);
+
+ if (hva->esram_size < size) {
+ dev_err(dev, "%s not enough esram (max:%d request:%d)\n",
+ pctx->name, hva->esram_size, size);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* allocate context for codec */
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ /* allocate sequence info buffer */
+ ret = hva_mem_alloc(pctx,
+ 2 * DATA_SIZE(frame_width, frame_height) +
+ SLICE_HEADER_SIZE +
+ BRC_DATA_SIZE,
+ "hva sequence info",
+ &ctx->seq_info);
+ if (ret) {
+ dev_err(dev,
+ "%s failed to allocate sequence info buffer\n",
+ pctx->name);
+ goto err_ctx;
+ }
+
+ /* allocate reference frame buffer */
+ ret = hva_mem_alloc(pctx,
+ frame_width * frame_height * 3 / 2,
+ "hva reference frame",
+ &ctx->ref_frame);
+ if (ret) {
+ dev_err(dev, "%s failed to allocate reference frame buffer\n",
+ pctx->name);
+ goto err_seq_info;
+ }
+
+ /* allocate reconstructed frame buffer */
+ ret = hva_mem_alloc(pctx,
+ frame_width * frame_height * 3 / 2,
+ "hva reconstructed frame",
+ &ctx->rec_frame);
+ if (ret) {
+ dev_err(dev,
+ "%s failed to allocate reconstructed frame buffer\n",
+ pctx->name);
+ goto err_ref_frame;
+ }
+
+ /* allocate task descriptor */
+ ret = hva_mem_alloc(pctx,
+ sizeof(struct hva_h264_task),
+ "hva task descriptor",
+ &ctx->task);
+ if (ret) {
+ dev_err(dev,
+ "%s failed to allocate task descriptor\n",
+ pctx->name);
+ goto err_rec_frame;
+ }
+
+ pctx->priv = (void *)ctx;
+
+ return 0;
+
+err_rec_frame:
+ hva_mem_free(pctx, ctx->rec_frame);
+err_ref_frame:
+ hva_mem_free(pctx, ctx->ref_frame);
+err_seq_info:
+ hva_mem_free(pctx, ctx->seq_info);
+err_ctx:
+ devm_kfree(dev, ctx);
+err:
+ return ret;
+}
+
+static int hva_h264_close(struct hva_ctx *pctx)
+{
+ struct hva_h264_ctx *ctx = (struct hva_h264_ctx *)pctx->priv;
+ struct device *dev = ctx_to_dev(pctx);
+
+ if (ctx->seq_info)
+ hva_mem_free(pctx, ctx->seq_info);
+
+ if (ctx->ref_frame)
+ hva_mem_free(pctx, ctx->ref_frame);
+
+ if (ctx->rec_frame)
+ hva_mem_free(pctx, ctx->rec_frame);
+
+ if (ctx->task)
+ hva_mem_free(pctx, ctx->task);
+
+ devm_kfree(dev, ctx);
+
+ return 0;
+}
+
+static int hva_h264_encode(struct hva_ctx *pctx, struct hva_frame *frame,
+ struct hva_stream *stream)
+{
+ struct hva_h264_ctx *ctx = (struct hva_h264_ctx *)pctx->priv;
+ struct hva_h264_task *task = (struct hva_h264_task *)ctx->task->vaddr;
+ struct hva_buffer *tmp_frame;
+ u32 stuffing_bytes = 0;
+ int ret = 0;
+
+ ret = hva_h264_prepare_task(pctx, task, frame, stream);
+ if (ret)
+ goto err;
+
+ ret = hva_hw_execute_task(pctx, H264_ENC, ctx->task);
+ if (ret)
+ goto err;
+
+ pctx->stream_num++;
+ stream->bytesused += hva_h264_get_stream_size(task);
+
+ stuffing_bytes = hva_h264_get_stuffing_bytes(task);
+
+ if (stuffing_bytes)
+ hva_h264_fill_data_nal(pctx, stuffing_bytes,
+ (u8 *)stream->vaddr,
+ stream->size,
+ &stream->bytesused);
+
+ /* switch reference & reconstructed frame */
+ tmp_frame = ctx->ref_frame;
+ ctx->ref_frame = ctx->rec_frame;
+ ctx->rec_frame = tmp_frame;
+
+ return 0;
+err:
+ stream->bytesused = 0;
+ return ret;
+}
+
+const struct hva_enc nv12h264enc = {
+ .name = "H264(NV12)",
+ .pixelformat = V4L2_PIX_FMT_NV12,
+ .streamformat = V4L2_PIX_FMT_H264,
+ .max_width = H264_MAX_SIZE_W,
+ .max_height = H264_MAX_SIZE_H,
+ .open = hva_h264_open,
+ .close = hva_h264_close,
+ .encode = hva_h264_encode,
+};
+
+const struct hva_enc nv21h264enc = {
+ .name = "H264(NV21)",
+ .pixelformat = V4L2_PIX_FMT_NV21,
+ .streamformat = V4L2_PIX_FMT_H264,
+ .max_width = H264_MAX_SIZE_W,
+ .max_height = H264_MAX_SIZE_H,
+ .open = hva_h264_open,
+ .close = hva_h264_close,
+ .encode = hva_h264_encode,
+};
projects / cascardo / linux.git / commitdiff