mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-22 05:27:20 +00:00
[client] added initial NAL unit parser
This commit is contained in:
Geoffrey McRae
parent
a36d312844
commit
50ba9b4899
@ -17,6 +17,7 @@ CFLAGS += -DBUILD_VERSION='"$(shell git describe --always --long --dirty --abbr
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OBJS = main.o \
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lg-renderer.o \
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spice/spice.o \
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parsers/nal.o \
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decoders/null.o \
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decoders/h264.o \
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renderers/opengl.o
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@ -21,6 +21,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#include "debug.h"
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#include "memcpySSE.h"
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#include "parsers/nal.h"
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#include <stdlib.h>
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#include <string.h>
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@ -29,7 +30,6 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#define SURFACE_NUM 3
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#define NALU_AUD 9
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#define SLICE_TYPE_P 0
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#define SLICE_TYPE_B 1
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#define SLICE_TYPE_I 2
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@ -55,6 +55,8 @@ struct Inst
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VABufferID datBufferID[SURFACE_NUM];
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bool t2First;
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int sliceType;
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NAL nal;
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};
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static const unsigned char MatrixBufferH264[] = {
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@ -143,6 +145,13 @@ static bool lgd_h264_create(void ** opaque)
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this->sliBufferID[i] =
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this->datBufferID[i] = VA_INVALID_ID;
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if (!nal_initialize(&this->nal))
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{
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DEBUG_INFO("Failed to initialize NAL parser");
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free(this);
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return false;
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}
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lgd_h264_deinitialize(this);
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return true;
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}
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@ -450,13 +459,22 @@ static bool setup_pic_buffer(struct Inst * this)
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return false;
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}
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const NAL_SPS * sps;
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if (!nal_get_sps(this->nal, &sps))
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{
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DEBUG_ERROR("nal_get_sps");
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return false;
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}
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memset(p, 0, sizeof(VAPictureParameterBufferH264));
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p->picture_width_in_mbs_minus1 = (this->format.width + 15) / 16;
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p->picture_width_in_mbs_minus1 = (this->format.height + 15) / 16;
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p->num_ref_frames = 1;
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p->seq_fields.value = 145;
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p->pic_fields.value = 0x501;
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p->frame_num = this->frameNum % 16;
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p->picture_width_in_mbs_minus1 = sps->pic_width_in_mbs_minus1;
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p->picture_height_in_mbs_minus1 = sps->pic_height_in_map_units_minus1;
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p->bit_depth_luma_minus8 = sps->bit_depth_luma_minus8;
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p->bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8;
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p->num_ref_frames = sps->num_ref_frames;
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p->seq_fields.value = 145;
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p->pic_fields.value = 0x501;
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p->frame_num = this->frameNum % 16;
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for(int i = 0; i < 16; ++i)
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{
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p->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
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@ -592,55 +610,33 @@ static bool setup_dat_buffer(struct Inst * this, const uint8_t * src, size_t src
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return true;
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}
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static bool parse_nalu(struct Inst * this, const uint8_t * src, size_t size)
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{
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static const uint8_t startCode[4] = {0x00, 0x00, 0x00, 0x01};
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if (memcmp(src, startCode, sizeof(startCode)) != 0)
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{
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DEBUG_ERROR("Missing start code");
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return false;
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}
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src += 4;
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if (*src & 0x80)
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{
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DEBUG_ERROR("forbidden_zero_bit is set");
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return false;
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}
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// uint8_t nal_ref_idc = (*src & 0x60) >> 5;
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uint8_t nal_ref_unit_type = (*src & 0x1F);
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++src;
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if (nal_ref_unit_type == NALU_AUD)
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{
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static const int pic_type_to_slice_type[3] =
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{
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SLICE_TYPE_I,
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SLICE_TYPE_P,
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SLICE_TYPE_B
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};
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const uint8_t primary_pic_type = (*src & 0xE0) >> 5;
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this->sliceType = pic_type_to_slice_type[primary_pic_type];
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return true;
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}
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return false;
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}
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static bool lgd_h264_decode(void * opaque, const uint8_t * src, size_t srcSize)
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{
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VAStatus status;
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struct Inst * this = (struct Inst *)opaque;
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if (!parse_nalu(this, src, srcSize))
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if (!nal_parse(this->nal, src, srcSize))
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{
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DEBUG_ERROR("Failed to parse required information");
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return false;
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}
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uint8_t pic_type;
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if (!nal_get_primary_picture_type(this->nal, &pic_type))
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{
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DEBUG_ERROR("Missing primary picture type");
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return false;
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}
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static const int pic_type_to_slice_type[3] =
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{
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SLICE_TYPE_I,
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SLICE_TYPE_P,
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SLICE_TYPE_B
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};
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this->sliceType = pic_type_to_slice_type[pic_type];
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// don't start until we have an I-FRAME
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if (this->frameNum == 0 && this->sliceType != SLICE_TYPE_I)
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return true;
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453
client/parsers/nal.c
Normal file
453
client/parsers/nal.c
Normal file
@ -0,0 +1,453 @@
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/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "nal.h"
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#include "debug.h"
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#include "utils.h"
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#include <stdlib.h>
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#include <string.h>
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#define DEBUG_NAL
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struct NAL
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{
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uint8_t primary_pic_type;
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bool primary_pic_type_valid;
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bool sps_valid;
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NAL_SPS sps;
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int32_t * sps_offset_for_ref_frame;
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uint32_t sps_num_ref_frames_in_pic_order_cnt_cycle;
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NAL_VUI vui;
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};
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bool nal_initialize(NAL * ptr)
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{
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*ptr = (NAL)malloc(sizeof(struct NAL));
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memset(*ptr, 0, sizeof(struct NAL));
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return true;
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}
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void nal_deinitialize(NAL this)
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{
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if (this->sps_offset_for_ref_frame)
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{
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free(this->sps_offset_for_ref_frame);
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this->sps_offset_for_ref_frame = NULL;
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}
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if (this->vui.nal_hrd_parameters.cpb)
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{
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free(this->vui.nal_hrd_parameters.cpb);
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this->vui.nal_hrd_parameters.cpb = NULL;
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}
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if (this->vui.vcl_hrd_parameters.cpb)
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{
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free(this->vui.vcl_hrd_parameters.cpb);
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this->vui.vcl_hrd_parameters.cpb = NULL;
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}
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free(this);
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}
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static bool parse_nal_hrd(NAL_HRD * const hrd, const uint8_t * src, size_t size, size_t * const offset)
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{
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hrd->cpb_cnt_minus1 = decode_u_golomb(src, offset);
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hrd->bit_rate_scale = get_bits(src, offset, 4);
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hrd->cpb_size_scale = get_bits(src, offset, 4);
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if (hrd->cpb_size_count < hrd->cpb_size_scale)
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{
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hrd->cpb = realloc(hrd->cpb, hrd->cpb_size_scale * sizeof(NAL_CPB));
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hrd->cpb_size_count = hrd->cpb_size_scale;
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}
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for(uint32_t i = 0; i < hrd->cpb_size_scale; ++i)
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{
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hrd->cpb[i].bit_rate_value_minus1 = decode_u_golomb(src, offset);
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hrd->cpb[i].cpb_size_value_minus1 = decode_u_golomb(src, offset);
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hrd->cpb[i].cbr_flag = get_bit(src, offset);
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}
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hrd->initial_cpb_removal_delay_length_minus1 = get_bits(src, offset, 5);
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hrd->cpb_removal_delay_length_minus1 = get_bits(src, offset, 5);
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hrd->dpb_output_delay_length_minus1 = get_bits(src, offset, 5);
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hrd->time_offset_length = get_bits(src, offset, 5);
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return true;
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}
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static bool parse_nal_vui(NAL_VUI * const vui, const uint8_t * src, size_t size, size_t * const offset)
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{
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NAL_CPB * nal_hrd_cpb = vui->nal_hrd_parameters.cpb;
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uint8_t nal_hrd_count = vui->nal_hrd_parameters.cpb_size_count;
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NAL_CPB * vcl_hrd_cpb = vui->vcl_hrd_parameters.cpb;
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uint8_t vcl_hrd_count = vui->vcl_hrd_parameters.cpb_size_count;
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memset(vui, 0, sizeof(NAL_VUI));
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vui->nal_hrd_parameters.cpb = nal_hrd_cpb;
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vui->nal_hrd_parameters.cpb_size_count = nal_hrd_count;
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vui->vcl_hrd_parameters.cpb = vcl_hrd_cpb;
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vui->vcl_hrd_parameters.cpb_size_count = vcl_hrd_count;
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vui->aspect_ratio_info_present_flag = get_bit(src, offset);
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if (vui->aspect_ratio_info_present_flag)
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{
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vui->aspect_ratio_idc = get_bits(src, offset, 8);
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if (vui->aspect_ratio_idc == IDC_VUI_ASPECT_RATIO_EXTENDED_SAR)
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{
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vui->sar_width = get_bits(src, offset, 16);
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vui->sar_height = get_bits(src, offset, 16);
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}
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}
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vui->overscan_info_present_flag = get_bit(src, offset);
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if (vui->overscan_info_present_flag)
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vui->overscan_appropriate_flag = get_bit(src, offset);
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vui->video_signal_type_present_flag = get_bit(src, offset);
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if (vui->video_signal_type_present_flag)
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{
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vui->video_format = get_bits(src, offset, 3);
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vui->video_full_range_flag = get_bit(src, offset);
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vui->colour_description_present_flag = get_bit(src, offset);
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if (vui->colour_description_present_flag)
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{
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vui->colour_primaries = get_bits(src, offset, 8);
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vui->transfer_characteristics = get_bits(src, offset, 8);
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vui->matrix_coefficients = get_bits(src, offset, 8);
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}
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}
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vui->chroma_loc_info_present_flag = get_bit(src, offset);
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if (vui->chroma_loc_info_present_flag)
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{
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vui->chroma_sample_loc_type_top_field = decode_u_golomb(src, offset);
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vui->chroma_sample_loc_type_bottom_field = decode_u_golomb(src, offset);
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}
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vui->timing_info_present_flag = get_bit(src, offset);
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if (vui->timing_info_present_flag)
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{
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vui->num_units_in_tick = get_bits(src, offset, 32);
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vui->time_scale = get_bits(src, offset, 32);
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vui->fixed_frame_rate_flag = get_bit(src, offset);
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}
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vui->nal_hrd_parameters_present_flag = get_bit(src, offset);
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if (vui->nal_hrd_parameters_present_flag)
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if (!parse_nal_hrd(&vui->nal_hrd_parameters, src, size, offset))
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return false;
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vui->vcl_hrd_parameters_present_flag = get_bit(src, offset);
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if (vui->vcl_hrd_parameters_present_flag)
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if (!parse_nal_hrd(&vui->vcl_hrd_parameters, src, size, offset))
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return false;
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if (vui->nal_hrd_parameters_present_flag || vui->vcl_hrd_parameters_present_flag)
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vui->low_delay_hrd_flag = get_bit(src, offset);
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vui->pic_struct_present_flag = get_bit(src, offset);
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vui->bitstream_restriction_flag = get_bit(src, offset);
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if (vui->bitstream_restriction_flag)
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{
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vui->motion_vectors_over_pic_boundaries_flag = get_bit(src, offset);
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vui->max_bytes_per_pic_denom = decode_u_golomb(src, offset);
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vui->max_bits_per_mb_denom = decode_u_golomb(src, offset);
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vui->log2_max_mv_length_horizontal = decode_u_golomb(src, offset);
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vui->log2_max_mv_length_vertical = decode_u_golomb(src, offset);
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vui->num_reorder_frames = decode_u_golomb(src, offset);
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vui->max_dec_frame_buffering = decode_u_golomb(src, offset);
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}
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return true;
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}
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static bool parse_nal_trailing_bits(NAL this, const uint8_t * src, size_t size, size_t * const offset)
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{
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if (!get_bit(src, offset))
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{
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DEBUG_ERROR("Missing stop bit");
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return false;
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}
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// byte align
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*offset = (*offset + 0x7) & ~0x7;
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return true;
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}
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static bool parse_nal_sps(NAL this, const uint8_t * src, size_t size, size_t * const offset)
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{
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this->sps_valid = false;
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memset(&this->sps, 0, sizeof(this->sps));
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this->sps.profile_idc = get_bits(src, offset, 8);
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if ((this->sps.profile_idc != IDC_PROFILE_BASELINE) &&
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(this->sps.profile_idc != IDC_PROFILE_MAIN ) &&
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(this->sps.profile_idc != IDC_PROFILE_EXTENDED) &&
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(this->sps.profile_idc != IDC_PROFILE_HP ) &&
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(this->sps.profile_idc != IDC_PROFILE_Hi10P ) &&
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(this->sps.profile_idc != IDC_PROFILE_Hi422 ) &&
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(this->sps.profile_idc != IDC_PROFILE_Hi444 ) &&
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(this->sps.profile_idc != IDC_PROFILE_CAVLC444))
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{
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DEBUG_ERROR("Invalid profile IDC (%d) encountered", this->sps.profile_idc);
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return false;
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}
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this->sps.constraint_set_flags[0] = get_bit(src, offset);
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this->sps.constraint_set_flags[1] = get_bit(src, offset);
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this->sps.constraint_set_flags[2] = get_bit(src, offset);
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*offset += 5;
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this->sps.level_idc = get_bits(src, offset, 8);
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this->sps.seq_parameter_set_id = decode_u_golomb(src, offset);
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if ((this->sps.profile_idc == IDC_PROFILE_HP ) ||
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(this->sps.profile_idc == IDC_PROFILE_Hi10P ) ||
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(this->sps.profile_idc == IDC_PROFILE_Hi422 ) ||
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(this->sps.profile_idc == IDC_PROFILE_Hi444 ) ||
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(this->sps.profile_idc == IDC_PROFILE_CAVLC444))
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{
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this->sps.chroma_format_idc = decode_u_golomb(src, offset);
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if (this->sps.chroma_format_idc == IDC_CHROMA_FORMAT_YUV444)
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this->sps.seperate_colour_plane_flag = get_bit(src, offset);
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this->sps.bit_depth_luma_minus8 = decode_u_golomb(src, offset);
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this->sps.bit_depth_chroma_minus8 = decode_u_golomb(src, offset);
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this->sps.lossless_qpprime_y_zero_flag = get_bit(src, offset);
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this->sps.seq_scaling_matrix_present_flag = get_bit(src, offset);
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if (this->sps.seq_scaling_matrix_present_flag)
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{
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const int cnt = this->sps.chroma_format_idc == IDC_CHROMA_FORMAT_YUV444 ? 12 : 8;
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for(int i = 0; i < cnt; ++i)
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this->sps.seq_scaling_list_present_flag[i] = get_bit(src, offset);
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}
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}
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else
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this->sps.chroma_format_idc = IDC_CHROMA_FORMAT_YUV420;
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this->sps.log2_max_frame_num_minus4 = decode_u_golomb(src, offset);
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this->sps.pic_order_cnt_type = decode_u_golomb(src, offset);
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if (this->sps.pic_order_cnt_type == 0)
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this->sps.log2_max_pic_order_cnt_lsb_minus4 = decode_u_golomb(src, offset);
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else
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{
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if (this->sps.pic_order_cnt_type == 1)
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{
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this->sps.delta_pic_order_always_zero_flag = get_bit(src, offset);
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this->sps.offset_for_non_ref_pic = decode_s_golomb(src, offset);
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this->sps.offset_for_top_to_bottom_field = decode_s_golomb(src, offset);
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||||
|
||||
this->sps.num_ref_frames_in_pic_order_cnt_cycle = decode_u_golomb(src, offset);
|
||||
if (this->sps.num_ref_frames_in_pic_order_cnt_cycle > this->sps_num_ref_frames_in_pic_order_cnt_cycle)
|
||||
{
|
||||
this->sps_offset_for_ref_frame = realloc(
|
||||
this->sps_offset_for_ref_frame,
|
||||
this->sps.num_ref_frames_in_pic_order_cnt_cycle * sizeof(int32_t)
|
||||
);
|
||||
this->sps_num_ref_frames_in_pic_order_cnt_cycle = this->sps.num_ref_frames_in_pic_order_cnt_cycle;
|
||||
}
|
||||
|
||||
this->sps.offset_for_ref_frame = this->sps_offset_for_ref_frame;
|
||||
for(uint32_t i = 0; i < this->sps.num_ref_frames_in_pic_order_cnt_cycle; ++i)
|
||||
this->sps.offset_for_ref_frame[i] = decode_s_golomb(src, offset);
|
||||
}
|
||||
}
|
||||
|
||||
this->sps.num_ref_frames = decode_u_golomb(src, offset);
|
||||
this->sps.gaps_in_frame_num_value_allowed_flag = get_bit(src, offset);
|
||||
this->sps.pic_width_in_mbs_minus1 = decode_u_golomb(src, offset);
|
||||
this->sps.pic_height_in_map_units_minus1 = decode_u_golomb(src, offset);
|
||||
this->sps.frame_mbs_only_flag = get_bit(src, offset);
|
||||
|
||||
if (!this->sps.frame_mbs_only_flag)
|
||||
this->sps.mb_adaptive_frame_field_flag = get_bit(src, offset);
|
||||
|
||||
this->sps.direct_8x8_inference_flag = get_bit(src, offset);
|
||||
this->sps.frame_cropping_flag = get_bit(src, offset);
|
||||
|
||||
if (this->sps.frame_cropping_flag)
|
||||
{
|
||||
this->sps.frame_crop_left_offset = decode_u_golomb(src, offset);
|
||||
this->sps.frame_crop_right_offset = decode_u_golomb(src, offset);
|
||||
this->sps.frame_crop_top_offset = decode_u_golomb(src, offset);
|
||||
this->sps.frame_crop_bottom_offset = decode_u_golomb(src, offset);
|
||||
}
|
||||
|
||||
this->sps.vui_parameters_present_flag = get_bit(src, offset);
|
||||
|
||||
#ifdef DEBUG_NAL
|
||||
DEBUG_INFO("SPS\n"
|
||||
"profile_idc : %u\n"
|
||||
"constraint_set_flags : %u %u %u\n"
|
||||
"level_idc : %u\n"
|
||||
"sec_parameter_set_id : %u\n"
|
||||
"chroma_format_idc : %u\n"
|
||||
"seperate_colour_plane_flag : %u\n"
|
||||
"bit_depth_luma_minus8 : %u\n"
|
||||
"bit_depth_chroma_minus8 : %u\n"
|
||||
"lossless_qpprime_y_zero_flag : %u\n"
|
||||
"seq_scaling_matrix_present_flag : %u\n"
|
||||
"log2_max_frame_num_minus4 : %u\n"
|
||||
"pic_order_cnt_type : %u\n"
|
||||
"log2_max_pic_order_cnt_lsb_minus4 : %u\n"
|
||||
"delta_pic_order_always_zero_flag : %u\n"
|
||||
"offset_for_non_ref_pic : %d\n"
|
||||
"offset_for_top_to_bottom_field : %d\n"
|
||||
"num_ref_frames_in_pic_order_cnt_cycle: %u\n"
|
||||
"num_ref_frames : %u\n"
|
||||
"gaps_in_frame_num_value_allowed_flag : %u\n"
|
||||
"pic_width_in_mbs_minus1 : %3u (%u)\n"
|
||||
"pic_height_in_map_units_minus1 : %3u (%u)\n"
|
||||
"frame_mbs_only_flag : %u\n"
|
||||
"mb_adaptive_frame_field_flag : %u\n"
|
||||
"direct_8x8_inference_flag : %u\n"
|
||||
"frame_cropping_flag : %u\n"
|
||||
"frame_crop_left_offset : %u\n"
|
||||
"frame_crop_right_offset : %u\n"
|
||||
"frame_crop_top_offset : %u\n"
|
||||
"frame_crop_bottom_offset : %u\n"
|
||||
"vui_parameters_present_flag : %u",
|
||||
this->sps.profile_idc,
|
||||
this->sps.constraint_set_flags[0],
|
||||
this->sps.constraint_set_flags[1],
|
||||
this->sps.constraint_set_flags[2],
|
||||
this->sps.level_idc,
|
||||
this->sps.seq_parameter_set_id,
|
||||
this->sps.chroma_format_idc,
|
||||
this->sps.seperate_colour_plane_flag,
|
||||
this->sps.bit_depth_luma_minus8,
|
||||
this->sps.bit_depth_chroma_minus8,
|
||||
this->sps.lossless_qpprime_y_zero_flag,
|
||||
this->sps.seq_scaling_matrix_present_flag,
|
||||
this->sps.log2_max_frame_num_minus4,
|
||||
this->sps.pic_order_cnt_type,
|
||||
this->sps.log2_max_pic_order_cnt_lsb_minus4,
|
||||
this->sps.delta_pic_order_always_zero_flag,
|
||||
this->sps.offset_for_non_ref_pic,
|
||||
this->sps.offset_for_top_to_bottom_field,
|
||||
this->sps.num_ref_frames_in_pic_order_cnt_cycle,
|
||||
this->sps.num_ref_frames,
|
||||
this->sps.gaps_in_frame_num_value_allowed_flag,
|
||||
this->sps.pic_width_in_mbs_minus1 , (this->sps.pic_width_in_mbs_minus1 + 1) * 16,
|
||||
this->sps.pic_height_in_map_units_minus1, (this->sps.pic_height_in_map_units_minus1 + 1) * 16,
|
||||
this->sps.frame_mbs_only_flag,
|
||||
this->sps.mb_adaptive_frame_field_flag,
|
||||
this->sps.direct_8x8_inference_flag,
|
||||
this->sps.frame_cropping_flag,
|
||||
this->sps.frame_crop_left_offset,
|
||||
this->sps.frame_crop_right_offset,
|
||||
this->sps.frame_crop_top_offset,
|
||||
this->sps.frame_crop_bottom_offset,
|
||||
this->sps.vui_parameters_present_flag
|
||||
);
|
||||
#endif
|
||||
|
||||
if (this->sps.vui_parameters_present_flag)
|
||||
if (!parse_nal_vui(&this->vui, src, size, offset))
|
||||
return false;
|
||||
|
||||
if (!parse_nal_trailing_bits(this, src, size, offset))
|
||||
return false;
|
||||
|
||||
this->sps_valid = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool nal_parse(NAL this, const uint8_t * src, size_t size)
|
||||
{
|
||||
static FILE * fd = NULL;
|
||||
if (!fd)
|
||||
fd = fopen("/tmp/stream.h264", "w");
|
||||
fwrite(src, size, 1, fd);
|
||||
|
||||
const size_t bits = size << 4;
|
||||
size_t offset = 0;
|
||||
while(offset < bits)
|
||||
{
|
||||
// look for the start header
|
||||
if (get_bits(src, &offset, 32) != 1)
|
||||
{
|
||||
offset -= 24;
|
||||
continue;
|
||||
}
|
||||
|
||||
// ensure the forbidden zero bit is not set
|
||||
if (get_bit(src, &offset) != 0)
|
||||
{
|
||||
DEBUG_ERROR("forbidden_zero_bit is set");
|
||||
return false;
|
||||
}
|
||||
|
||||
uint8_t nal_ref_idc = get_bits(src, &offset, 2);
|
||||
uint8_t nal_ref_unit_type = get_bits(src, &offset, 5);
|
||||
DEBUG_INFO("ref idc: %d, ref unit type: %d", nal_ref_idc, nal_ref_unit_type);
|
||||
|
||||
switch(nal_ref_unit_type)
|
||||
{
|
||||
case NAL_TYPE_AUD:
|
||||
{
|
||||
this->primary_pic_type = get_bits(src, &offset, 3);
|
||||
this->primary_pic_type_valid = true;
|
||||
if (!parse_nal_trailing_bits(this, src, size, &offset))
|
||||
return false;
|
||||
break;
|
||||
}
|
||||
|
||||
case NAL_TYPE_SPS:
|
||||
if (!parse_nal_sps(this, src, size, &offset))
|
||||
return false;
|
||||
break;
|
||||
|
||||
case NAL_TYPE_PPS:
|
||||
break;
|
||||
|
||||
default:
|
||||
DEBUG_ERROR("Unknown NAL ref unit type: %d", nal_ref_unit_type);
|
||||
return false;
|
||||
}
|
||||
|
||||
// byte align
|
||||
offset = (offset + 0x7) & ~0x7;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool nal_get_sps(NAL this, const NAL_SPS ** sps)
|
||||
{
|
||||
if (!this->sps_valid)
|
||||
return false;
|
||||
*sps = &this->sps;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool nal_get_primary_picture_type(NAL this, uint8_t * pic_type)
|
||||
{
|
||||
if (!this->primary_pic_type_valid)
|
||||
return false;
|
||||
*pic_type = this->primary_pic_type;
|
||||
return true;
|
||||
}
|
||||
153
client/parsers/nal.h
Normal file
153
client/parsers/nal.h
Normal file
@ -0,0 +1,153 @@
|
||||
/*
|
||||
Looking Glass - KVM FrameRelay (KVMFR) Client
|
||||
Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
|
||||
https://looking-glass.hostfission.com
|
||||
|
||||
This program is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License as published by the Free Software
|
||||
Foundation; either version 2 of the License, or (at your option) any later
|
||||
version.
|
||||
|
||||
This program is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along with
|
||||
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
||||
Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#define NAL_TYPE_SPS 7
|
||||
#define NAL_TYPE_PPS 8
|
||||
#define NAL_TYPE_AUD 9
|
||||
|
||||
#define IDC_PROFILE_BASELINE 66
|
||||
#define IDC_PROFILE_MAIN 77
|
||||
#define IDC_PROFILE_EXTENDED 88
|
||||
#define IDC_PROFILE_HP 100
|
||||
#define IDC_PROFILE_Hi10P 110
|
||||
#define IDC_PROFILE_Hi422 122
|
||||
#define IDC_PROFILE_Hi444 244
|
||||
#define IDC_PROFILE_CAVLC444 44
|
||||
|
||||
#define IDC_CHROMA_FORMAT_YUV400 0
|
||||
#define IDC_CHROMA_FORMAT_YUV420 1
|
||||
#define IDC_CHROMA_FORMAT_YVU422 2
|
||||
#define IDC_CHROMA_FORMAT_YUV444 3
|
||||
|
||||
#define IDC_VUI_ASPECT_RATIO_EXTENDED_SAR 0xFF
|
||||
|
||||
#define NAL_PICTURE_TYPE_I 0
|
||||
#define NAL_PICTURE_TYPE_P 1
|
||||
#define NAL_PICTURE_TYPE_B 2
|
||||
|
||||
typedef struct NAL_SPS
|
||||
{
|
||||
uint8_t profile_idc;
|
||||
uint8_t constraint_set_flags[3];
|
||||
uint8_t level_idc;
|
||||
uint32_t seq_parameter_set_id;
|
||||
uint32_t chroma_format_idc;
|
||||
uint8_t seperate_colour_plane_flag;
|
||||
uint32_t bit_depth_luma_minus8;
|
||||
uint32_t bit_depth_chroma_minus8;
|
||||
uint8_t lossless_qpprime_y_zero_flag;
|
||||
uint8_t seq_scaling_matrix_present_flag;
|
||||
uint8_t seq_scaling_list_present_flag[12];
|
||||
uint32_t log2_max_frame_num_minus4;
|
||||
uint32_t pic_order_cnt_type;
|
||||
uint32_t log2_max_pic_order_cnt_lsb_minus4;
|
||||
uint8_t delta_pic_order_always_zero_flag;
|
||||
int32_t offset_for_non_ref_pic;
|
||||
int32_t offset_for_top_to_bottom_field;
|
||||
uint32_t num_ref_frames_in_pic_order_cnt_cycle;
|
||||
int32_t * offset_for_ref_frame;
|
||||
uint32_t num_ref_frames;
|
||||
uint8_t gaps_in_frame_num_value_allowed_flag;
|
||||
uint32_t pic_width_in_mbs_minus1;
|
||||
uint32_t pic_height_in_map_units_minus1;
|
||||
uint8_t frame_mbs_only_flag;
|
||||
uint8_t mb_adaptive_frame_field_flag;
|
||||
uint8_t direct_8x8_inference_flag;
|
||||
uint8_t frame_cropping_flag;
|
||||
uint32_t frame_crop_left_offset;
|
||||
uint32_t frame_crop_right_offset;
|
||||
uint32_t frame_crop_top_offset;
|
||||
uint32_t frame_crop_bottom_offset;
|
||||
uint8_t vui_parameters_present_flag;
|
||||
}
|
||||
NAL_SPS;
|
||||
|
||||
typedef struct NAL_CPB
|
||||
{
|
||||
uint32_t bit_rate_value_minus1;
|
||||
uint32_t cpb_size_value_minus1;
|
||||
uint8_t cbr_flag;
|
||||
}
|
||||
NAL_CPB;
|
||||
|
||||
typedef struct NAL_HRD
|
||||
{
|
||||
uint32_t cpb_cnt_minus1;
|
||||
uint8_t bit_rate_scale;
|
||||
uint8_t cpb_size_scale;
|
||||
uint8_t cpb_size_count;
|
||||
NAL_CPB * cpb;
|
||||
uint8_t initial_cpb_removal_delay_length_minus1;
|
||||
uint8_t cpb_removal_delay_length_minus1;
|
||||
uint8_t dpb_output_delay_length_minus1;
|
||||
uint8_t time_offset_length;
|
||||
}
|
||||
NAL_HRD;
|
||||
|
||||
typedef struct NAL_VUI
|
||||
{
|
||||
uint8_t aspect_ratio_info_present_flag;
|
||||
uint8_t aspect_ratio_idc;
|
||||
uint16_t sar_width;
|
||||
uint16_t sar_height;
|
||||
uint8_t overscan_info_present_flag;
|
||||
uint8_t overscan_appropriate_flag;
|
||||
uint8_t video_signal_type_present_flag;
|
||||
uint8_t video_format;
|
||||
uint8_t video_full_range_flag;
|
||||
uint8_t colour_description_present_flag;
|
||||
uint8_t colour_primaries;
|
||||
uint8_t transfer_characteristics;
|
||||
uint8_t matrix_coefficients;
|
||||
uint8_t chroma_loc_info_present_flag;
|
||||
uint32_t chroma_sample_loc_type_top_field;
|
||||
uint32_t chroma_sample_loc_type_bottom_field;
|
||||
uint8_t timing_info_present_flag;
|
||||
uint32_t num_units_in_tick;
|
||||
uint32_t time_scale;
|
||||
uint8_t fixed_frame_rate_flag;
|
||||
uint8_t nal_hrd_parameters_present_flag;
|
||||
NAL_HRD nal_hrd_parameters;
|
||||
uint8_t vcl_hrd_parameters_present_flag;
|
||||
NAL_HRD vcl_hrd_parameters;
|
||||
uint8_t low_delay_hrd_flag;
|
||||
uint8_t pic_struct_present_flag;
|
||||
uint8_t bitstream_restriction_flag;
|
||||
uint8_t motion_vectors_over_pic_boundaries_flag;
|
||||
uint32_t max_bytes_per_pic_denom;
|
||||
uint32_t max_bits_per_mb_denom;
|
||||
uint32_t log2_max_mv_length_horizontal;
|
||||
uint32_t log2_max_mv_length_vertical;
|
||||
uint32_t num_reorder_frames;
|
||||
uint32_t max_dec_frame_buffering;
|
||||
}
|
||||
NAL_VUI;
|
||||
|
||||
typedef struct NAL * NAL;
|
||||
|
||||
bool nal_initialize (NAL * ptr);
|
||||
void nal_deinitialize(NAL this );
|
||||
bool nal_parse (NAL this, const uint8_t * src, size_t size);
|
||||
|
||||
bool nal_get_sps (NAL this, const NAL_SPS ** sps);
|
||||
bool nal_get_primary_picture_type(NAL this, uint8_t * pic_type);
|
||||
@ -60,4 +60,34 @@ static inline void nsleep(uint64_t ns)
|
||||
#define LG_LOCK(x) SDL_LockMutex(x)
|
||||
#define LG_UNLOCK(x) SDL_UnlockMutex(x)
|
||||
#define LG_LOCK_FREE(x) SDL_DestroyMutex(x)
|
||||
#endif
|
||||
#endif
|
||||
|
||||
static inline uint32_t get_bit(const uint8_t * const base, size_t * const offset)
|
||||
{
|
||||
uint32_t out = ((*(base + (*offset >> 0x3))) >> (0x7 - (*offset & 0x7))) & 0x1;
|
||||
++*offset;
|
||||
return out;
|
||||
}
|
||||
|
||||
static inline uint32_t get_bits(const uint8_t * const base, size_t * const offset, const uint8_t bits)
|
||||
{
|
||||
uint32_t value = 0;
|
||||
for (int i = 0; i < bits; ++i)
|
||||
value |= (get_bit(base, offset) ? 1 : 0) << (bits - i - 1);
|
||||
return value;
|
||||
}
|
||||
|
||||
static inline uint32_t decode_u_golomb(const uint8_t * const base, size_t * const offset)
|
||||
{
|
||||
uint32_t i = 0;
|
||||
while(get_bit(base, offset) == 0)
|
||||
++i;
|
||||
|
||||
return ((1 << i) - 1 + get_bits(base, offset, i));
|
||||
}
|
||||
|
||||
static inline int32_t decode_s_golomb(const uint8_t * const base, size_t * const offset)
|
||||
{
|
||||
const uint32_t g = decode_u_golomb(base, offset);
|
||||
return (g & 0x1) ? (g + 1) / 2 : -(g / 2);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user