Add MPEG 4 codec
This patch introduces the support of MPEG4 video decoding. It basically just copies data from VA's frame/slice headers data structures to v4l's MPEG4 frame header extended controls data structures.
This commit is contained in:
Florent Revest
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/*
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* Copyright (c) 2016 Florent Revest, <florent.revest@free-electrons.com>
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* 2007 Intel Corporation. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "sunxi_cedrus_drv_video.h"
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#include "mpeg4.h"
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#include <assert.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include <linux/videodev2.h>
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/*
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* This file takes care of filling v4l2's frame API MPEG4 headers extended
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* controls from VA's data structures.
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*/
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VAStatus sunxi_cedrus_render_mpeg4_slice_data(VADriverContextP ctx,
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object_context_p obj_context, object_surface_p obj_surface,
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object_buffer_p obj_buffer)
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{
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INIT_DRIVER_DATA
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VAStatus vaStatus = VA_STATUS_SUCCESS;
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struct v4l2_buffer buf;
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struct v4l2_plane plane[1];
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/* Query */
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memset(&(buf), 0, sizeof(buf));
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buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
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buf.memory = V4L2_MEMORY_MMAP;
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buf.index = obj_surface->input_buf_index;
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buf.length = 1;
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buf.m.planes = plane;
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assert(ioctl(driver_data->mem2mem_fd, VIDIOC_QUERYBUF, &buf)==0);
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/* Populate frame */
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char *src_buf = mmap(NULL, obj_buffer->size,
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PROT_READ | PROT_WRITE, MAP_SHARED,
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driver_data->mem2mem_fd, buf.m.planes[0].m.mem_offset);
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assert(src_buf != MAP_FAILED);
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memcpy(src_buf, obj_buffer->buffer_data, obj_buffer->size);
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return vaStatus;
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}
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VAStatus sunxi_cedrus_render_mpeg4_picture_parameter(VADriverContextP ctx,
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object_context_p obj_context, object_surface_p obj_surface,
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object_buffer_p obj_buffer)
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{
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INIT_DRIVER_DATA
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VAStatus vaStatus = VA_STATUS_SUCCESS;
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VAPictureParameterBufferMPEG4 *pic_param = (VAPictureParameterBufferMPEG4 *)obj_buffer->buffer_data;
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obj_context->mpeg4_frame_hdr.width = pic_param->vop_width;
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obj_context->mpeg4_frame_hdr.height = pic_param->vop_height;
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obj_context->mpeg4_frame_hdr.vol_fields.short_video_header = pic_param->vol_fields.bits.short_video_header;
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obj_context->mpeg4_frame_hdr.vol_fields.chroma_format = pic_param->vol_fields.bits.chroma_format;
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obj_context->mpeg4_frame_hdr.vol_fields.interlaced = pic_param->vol_fields.bits.interlaced;
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obj_context->mpeg4_frame_hdr.vol_fields.obmc_disable = pic_param->vol_fields.bits.obmc_disable;
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obj_context->mpeg4_frame_hdr.vol_fields.sprite_enable = pic_param->vol_fields.bits.sprite_enable;
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obj_context->mpeg4_frame_hdr.vol_fields.sprite_warping_accuracy = pic_param->vol_fields.bits.sprite_warping_accuracy;
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obj_context->mpeg4_frame_hdr.vol_fields.quant_type = pic_param->vol_fields.bits.quant_type;
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obj_context->mpeg4_frame_hdr.vol_fields.quarter_sample = pic_param->vol_fields.bits.quarter_sample;
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obj_context->mpeg4_frame_hdr.vol_fields.data_partitioned = pic_param->vol_fields.bits.data_partitioned;
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obj_context->mpeg4_frame_hdr.vol_fields.reversible_vlc = pic_param->vol_fields.bits.reversible_vlc;
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obj_context->mpeg4_frame_hdr.vol_fields.resync_marker_disable = pic_param->vol_fields.bits.resync_marker_disable;
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obj_context->mpeg4_frame_hdr.vop_fields.vop_coding_type = pic_param->vop_fields.bits.vop_coding_type;
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obj_context->mpeg4_frame_hdr.vop_fields.backward_reference_vop_coding_type = pic_param->vop_fields.bits.backward_reference_vop_coding_type;
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obj_context->mpeg4_frame_hdr.vop_fields.vop_rounding_type = pic_param->vop_fields.bits.vop_rounding_type;
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obj_context->mpeg4_frame_hdr.vop_fields.intra_dc_vlc_thr = pic_param->vop_fields.bits.intra_dc_vlc_thr;
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obj_context->mpeg4_frame_hdr.vop_fields.top_field_first = pic_param->vop_fields.bits.top_field_first;
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obj_context->mpeg4_frame_hdr.vop_fields.alternate_vertical_scan_flag = pic_param->vop_fields.bits.alternate_vertical_scan_flag;
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obj_context->mpeg4_frame_hdr.vop_fcode_forward = pic_param->vop_fcode_forward;
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obj_context->mpeg4_frame_hdr.vop_fcode_backward = pic_param->vop_fcode_backward;
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obj_context->mpeg4_frame_hdr.trb = pic_param->TRB;
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obj_context->mpeg4_frame_hdr.trd = pic_param->TRD;
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object_surface_p fwd_surface = SURFACE(pic_param->forward_reference_picture);
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if(fwd_surface)
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obj_context->mpeg4_frame_hdr.forward_index = fwd_surface->output_buf_index;
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else
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obj_context->mpeg4_frame_hdr.forward_index = obj_surface->output_buf_index;
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object_surface_p bwd_surface = SURFACE(pic_param->backward_reference_picture);
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if(bwd_surface)
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obj_context->mpeg4_frame_hdr.backward_index = bwd_surface->output_buf_index;
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else
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obj_context->mpeg4_frame_hdr.backward_index = obj_surface->output_buf_index;
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return vaStatus;
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}
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VAStatus sunxi_cedrus_render_mpeg4_slice_parameter(VADriverContextP ctx,
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object_context_p obj_context, object_surface_p obj_surface,
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object_buffer_p obj_buffer)
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{
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VASliceParameterBufferMPEG4 *slice_param = (VASliceParameterBufferMPEG4 *)obj_buffer->buffer_data;
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obj_context->mpeg4_frame_hdr.slice_pos = slice_param->slice_data_offset*8+slice_param->macroblock_offset;
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obj_context->mpeg4_frame_hdr.slice_len = slice_param->slice_data_size*8;
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obj_context->mpeg4_frame_hdr.quant_scale = slice_param->quant_scale;
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return VA_STATUS_SUCCESS;
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}
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