diff options
Diffstat (limited to 'drivers/staging/media/allegro-dvt/allegro-core.c')
| -rw-r--r-- | drivers/staging/media/allegro-dvt/allegro-core.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/staging/media/allegro-dvt/allegro-core.c b/drivers/staging/media/allegro-dvt/allegro-core.c index a6d42dc16d91..d007d1778f0e 100644 --- a/drivers/staging/media/allegro-dvt/allegro-core.c +++ b/drivers/staging/media/allegro-dvt/allegro-core.c @@ -26,6 +26,8 @@ #include <media/videobuf2-dma-contig.h> #include <media/videobuf2-v4l2.h> +#include "nal-h264.h" + /* * Support up to 4k video streams. The hardware actually supports higher * resolutions, which are specified in PG252 June 6, 2018 (H.264/H.265 Video @@ -1301,6 +1303,131 @@ static int allocate_reference_buffers(struct allegro_channel *channel, n, PAGE_ALIGN(size)); } +static ssize_t allegro_h264_write_sps(struct allegro_channel *channel, + void *dest, size_t n) +{ + struct allegro_dev *dev = channel->dev; + struct nal_h264_sps *sps; + ssize_t size; + unsigned int size_mb = SIZE_MACROBLOCK; + /* Calculation of crop units in Rec. ITU-T H.264 (04/2017) p. 76 */ + unsigned int crop_unit_x = 2; + unsigned int crop_unit_y = 2; + + sps = kzalloc(sizeof(*sps), GFP_KERNEL); + if (!sps) + return -ENOMEM; + + sps->profile_idc = nal_h264_profile_from_v4l2(channel->profile); + sps->constraint_set0_flag = 0; + sps->constraint_set1_flag = 1; + sps->constraint_set2_flag = 0; + sps->constraint_set3_flag = 0; + sps->constraint_set4_flag = 0; + sps->constraint_set5_flag = 0; + sps->level_idc = nal_h264_level_from_v4l2(channel->level); + sps->seq_parameter_set_id = 0; + sps->log2_max_frame_num_minus4 = 0; + sps->pic_order_cnt_type = 0; + sps->log2_max_pic_order_cnt_lsb_minus4 = 6; + sps->max_num_ref_frames = 3; + sps->gaps_in_frame_num_value_allowed_flag = 0; + sps->pic_width_in_mbs_minus1 = + DIV_ROUND_UP(channel->width, size_mb) - 1; + sps->pic_height_in_map_units_minus1 = + DIV_ROUND_UP(channel->height, size_mb) - 1; + sps->frame_mbs_only_flag = 1; + sps->mb_adaptive_frame_field_flag = 0; + sps->direct_8x8_inference_flag = 1; + sps->frame_cropping_flag = + (channel->width % size_mb) || (channel->height % size_mb); + if (sps->frame_cropping_flag) { + sps->crop_left = 0; + sps->crop_right = (round_up(channel->width, size_mb) - channel->width) / crop_unit_x; + sps->crop_top = 0; + sps->crop_bottom = (round_up(channel->height, size_mb) - channel->height) / crop_unit_y; + } + sps->vui_parameters_present_flag = 1; + sps->vui.aspect_ratio_info_present_flag = 0; + sps->vui.overscan_info_present_flag = 0; + sps->vui.video_signal_type_present_flag = 1; + sps->vui.video_format = 1; + sps->vui.video_full_range_flag = 0; + sps->vui.colour_description_present_flag = 1; + sps->vui.colour_primaries = 5; + sps->vui.transfer_characteristics = 5; + sps->vui.matrix_coefficients = 5; + sps->vui.chroma_loc_info_present_flag = 1; + sps->vui.chroma_sample_loc_type_top_field = 0; + sps->vui.chroma_sample_loc_type_bottom_field = 0; + sps->vui.timing_info_present_flag = 1; + sps->vui.num_units_in_tick = 1; + sps->vui.time_scale = 50; + sps->vui.fixed_frame_rate_flag = 1; + sps->vui.nal_hrd_parameters_present_flag = 0; + sps->vui.vcl_hrd_parameters_present_flag = 1; + sps->vui.vcl_hrd_parameters.cpb_cnt_minus1 = 0; + sps->vui.vcl_hrd_parameters.bit_rate_scale = 0; + sps->vui.vcl_hrd_parameters.cpb_size_scale = 1; + /* See Rec. ITU-T H.264 (04/2017) p. 410 E-53 */ + sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] = + channel->bitrate_peak / (1 << (6 + sps->vui.vcl_hrd_parameters.bit_rate_scale)) - 1; + /* See Rec. ITU-T H.264 (04/2017) p. 410 E-54 */ + sps->vui.vcl_hrd_parameters.cpb_size_value_minus1[0] = + (channel->cpb_size * 1000) / (1 << (4 + sps->vui.vcl_hrd_parameters.cpb_size_scale)) - 1; + sps->vui.vcl_hrd_parameters.cbr_flag[0] = 1; + sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 = 31; + sps->vui.vcl_hrd_parameters.cpb_removal_delay_length_minus1 = 31; + sps->vui.vcl_hrd_parameters.dpb_output_delay_length_minus1 = 31; + sps->vui.vcl_hrd_parameters.time_offset_length = 0; + sps->vui.low_delay_hrd_flag = 0; + sps->vui.pic_struct_present_flag = 1; + sps->vui.bitstream_restriction_flag = 0; + + size = nal_h264_write_sps(&dev->plat_dev->dev, dest, n, sps); + + kfree(sps); + + return size; +} + +static ssize_t allegro_h264_write_pps(struct allegro_channel *channel, + void *dest, size_t n) +{ + struct allegro_dev *dev = channel->dev; + struct nal_h264_pps *pps; + ssize_t size; + + pps = kzalloc(sizeof(*pps), GFP_KERNEL); + if (!pps) + return -ENOMEM; + + pps->pic_parameter_set_id = 0; + pps->seq_parameter_set_id = 0; + pps->entropy_coding_mode_flag = 0; + pps->bottom_field_pic_order_in_frame_present_flag = 0; + pps->num_slice_groups_minus1 = 0; + pps->num_ref_idx_l0_default_active_minus1 = 2; + pps->num_ref_idx_l1_default_active_minus1 = 2; + pps->weighted_pred_flag = 0; + pps->weighted_bipred_idc = 0; + pps->pic_init_qp_minus26 = 0; + pps->pic_init_qs_minus26 = 0; + pps->chroma_qp_index_offset = 0; + pps->deblocking_filter_control_present_flag = 1; + pps->constrained_intra_pred_flag = 0; + pps->redundant_pic_cnt_present_flag = 0; + pps->transform_8x8_mode_flag = 0; + pps->pic_scaling_matrix_present_flag = 0; + pps->second_chroma_qp_index_offset = 0; + + size = nal_h264_write_pps(&dev->plat_dev->dev, dest, n, pps); + + kfree(pps); + + return size; +} + static bool allegro_channel_is_at_eos(struct allegro_channel *channel) { bool is_at_eos = false; @@ -1350,6 +1477,9 @@ static void allegro_channel_finish_frame(struct allegro_channel *channel, u32 size; } *partition; enum vb2_buffer_state state = VB2_BUF_STATE_ERROR; + char *curr; + ssize_t len; + ssize_t free; src_buf = v4l2_m2m_src_buf_remove(channel->fh.m2m_ctx); @@ -1400,6 +1530,57 @@ static void allegro_channel_finish_frame(struct allegro_channel *channel, vb2_set_plane_payload(&dst_buf->vb2_buf, 0, partition->offset + partition->size); + curr = vb2_plane_vaddr(&dst_buf->vb2_buf, 0); + free = partition->offset; + if (msg->is_idr) { + len = allegro_h264_write_sps(channel, curr, free); + if (len < 0) { + v4l2_err(&dev->v4l2_dev, + "not enough space for sequence parameter set: %zd left\n", + free); + goto err; + } + curr += len; + free -= len; + v4l2_dbg(1, debug, &dev->v4l2_dev, + "channel %d: wrote %zd byte SPS nal unit\n", + channel->mcu_channel_id, len); + } + + if (msg->slice_type == AL_ENC_SLICE_TYPE_I) { + len = allegro_h264_write_pps(channel, curr, free); + if (len < 0) { + v4l2_err(&dev->v4l2_dev, + "not enough space for picture parameter set: %zd left\n", + free); + goto err; + } + curr += len; + free -= len; + v4l2_dbg(1, debug, &dev->v4l2_dev, + "channel %d: wrote %zd byte PPS nal unit\n", + channel->mcu_channel_id, len); + } + + len = nal_h264_write_filler(&dev->plat_dev->dev, curr, free); + if (len < 0) { + v4l2_err(&dev->v4l2_dev, + "failed to write %zd filler data\n", free); + goto err; + } + curr += len; + free -= len; + v4l2_dbg(2, debug, &dev->v4l2_dev, + "channel %d: wrote %zd bytes filler nal unit\n", + channel->mcu_channel_id, len); + + if (free != 0) { + v4l2_err(&dev->v4l2_dev, + "non-VCL NAL units do not fill space until VCL NAL unit: %zd bytes left\n", + free); + goto err; + } + state = VB2_BUF_STATE_DONE; v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false); |