a07efb73ec
Implements the decoding of video streams using common H264 decoders. We also implement a trivial feedback algorithm. Sponsored by: Rangee GmbH (http://www.rangee.de)
603 lines
15 KiB
C
603 lines
15 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* H.264 Bitmap Compression
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*
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* Copyright 2014 Mike McDonald <Mike.McDonald@software.dell.com>
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* Copyright 2017 David Fort <contact@hardening-consulting.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <winpr/crt.h>
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#include <winpr/print.h>
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#include <winpr/library.h>
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#include <winpr/bitstream.h>
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#include <winpr/synch.h>
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#include <freerdp/primitives.h>
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#include <freerdp/codec/h264.h>
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#include <freerdp/log.h>
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#include "h264.h"
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#define TAG FREERDP_TAG("codec")
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static BOOL avc444_ensure_buffer(H264_CONTEXT* h264, DWORD nDstHeight);
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BOOL avc420_ensure_buffer(H264_CONTEXT* h264, UINT32 stride, UINT32 width, UINT32 height)
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{
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if (!h264)
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return FALSE;
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if (stride == 0)
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stride = width;
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if (stride % 16 != 0)
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stride += 16 - stride % 16;
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if (height % 16 != 0)
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height += 16 - height % 16;
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if (!h264->pYUVData[0] || !h264->pYUVData[1] || !h264->pYUVData[2] ||
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(width != h264->width) || (height != h264->height) || (stride != h264->iStride[0]))
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{
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h264->iStride[0] = stride;
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h264->iStride[1] = (stride + 1) / 2;
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h264->iStride[2] = (stride + 1) / 2;
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h264->width = width;
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h264->height = height;
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_aligned_free(h264->pYUVData[0]);
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_aligned_free(h264->pYUVData[1]);
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_aligned_free(h264->pYUVData[2]);
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h264->pYUVData[0] = _aligned_malloc(h264->iStride[0] * height, 16);
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h264->pYUVData[1] = _aligned_malloc(h264->iStride[1] * height, 16);
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h264->pYUVData[2] = _aligned_malloc(h264->iStride[2] * height, 16);
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if (!h264->pYUVData[0] || !h264->pYUVData[1] || !h264->pYUVData[2])
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return FALSE;
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}
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return TRUE;
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}
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static BOOL check_rect(const H264_CONTEXT* h264, const RECTANGLE_16* rect,
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UINT32 nDstWidth, UINT32 nDstHeight)
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{
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/* Check, if the output rectangle is valid in decoded h264 frame. */
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if ((rect->right > h264->width) || (rect->left > h264->width))
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return FALSE;
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if ((rect->top > h264->height) || (rect->bottom > h264->height))
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return FALSE;
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/* Check, if the output rectangle is valid in destination buffer. */
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if ((rect->right > nDstWidth) || (rect->left > nDstWidth))
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return FALSE;
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if ((rect->bottom > nDstHeight) || (rect->top > nDstHeight))
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return FALSE;
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return TRUE;
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}
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static BOOL avc_yuv_to_rgb(H264_CONTEXT* h264, const RECTANGLE_16* regionRects,
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UINT32 numRegionRects, UINT32 nDstWidth,
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UINT32 nDstHeight, UINT32 nDstStep, BYTE* pDstData,
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DWORD DstFormat, BOOL use444)
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{
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UINT32 x;
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BYTE* pDstPoint;
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prim_size_t roi;
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INT32 width, height;
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const BYTE* pYUVPoint[3];
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primitives_t* prims = primitives_get();
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for (x = 0; x < numRegionRects; x++)
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{
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const RECTANGLE_16* rect = &(regionRects[x]);
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const UINT32* iStride;
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BYTE** ppYUVData;
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if (use444)
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{
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iStride = h264->iYUV444Stride;
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ppYUVData = h264->pYUV444Data;
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}
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else
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{
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iStride = h264->iStride;
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ppYUVData = h264->pYUVData;
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}
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if (!check_rect(h264, rect, nDstWidth, nDstHeight))
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return FALSE;
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width = rect->right - rect->left;
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height = rect->bottom - rect->top;
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pDstPoint = pDstData + rect->top * nDstStep + rect->left * 4;
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pYUVPoint[0] = ppYUVData[0] + rect->top * iStride[0] + rect->left;
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pYUVPoint[1] = ppYUVData[1];
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pYUVPoint[2] = ppYUVData[2];
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if (use444)
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{
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pYUVPoint[1] += rect->top * iStride[1] + rect->left;
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pYUVPoint[2] += rect->top * iStride[2] + rect->left;
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}
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else
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{
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pYUVPoint[1] += rect->top / 2 * iStride[1] + rect->left / 2;
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pYUVPoint[2] += rect->top / 2 * iStride[2] + rect->left / 2;
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}
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roi.width = width;
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roi.height = height;
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if (use444)
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{
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if (prims->YUV444ToRGB_8u_P3AC4R(
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pYUVPoint, iStride, pDstPoint, nDstStep,
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DstFormat, &roi) != PRIMITIVES_SUCCESS)
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{
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return FALSE;
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}
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}
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else
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{
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if (prims->YUV420ToRGB_8u_P3AC4R(
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pYUVPoint, iStride, pDstPoint, nDstStep,
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DstFormat, &roi) != PRIMITIVES_SUCCESS)
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return FALSE;
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}
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}
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return TRUE;
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}
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INT32 avc420_decompress(H264_CONTEXT* h264, const BYTE* pSrcData, UINT32 SrcSize,
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BYTE* pDstData, DWORD DstFormat, UINT32 nDstStep,
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UINT32 nDstWidth, UINT32 nDstHeight,
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RECTANGLE_16* regionRects, UINT32 numRegionRects)
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{
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int status;
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if (!h264)
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return -1001;
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status = h264->subsystem->Decompress(h264, pSrcData, SrcSize);
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if (status == 0)
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return 1;
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if (status < 0)
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return status;
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if (!avc_yuv_to_rgb(h264, regionRects, numRegionRects, nDstWidth,
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nDstHeight, nDstStep, pDstData, DstFormat, FALSE))
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return -1002;
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return 1;
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}
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INT32 avc420_compress(H264_CONTEXT* h264, const BYTE* pSrcData, DWORD SrcFormat,
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UINT32 nSrcStep, UINT32 nSrcWidth, UINT32 nSrcHeight,
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BYTE** ppDstData, UINT32* pDstSize)
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{
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prim_size_t roi;
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primitives_t* prims = primitives_get();
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if (!h264)
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return -1;
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if (!h264->subsystem->Compress)
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return -1;
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if (!avc420_ensure_buffer(h264, nSrcStep, nSrcWidth, nSrcHeight))
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return -1;
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roi.width = nSrcWidth;
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roi.height = nSrcHeight;
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if (prims->RGBToYUV420_8u_P3AC4R(pSrcData, SrcFormat, nSrcStep, h264->pYUVData, h264->iStride,
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&roi) != PRIMITIVES_SUCCESS)
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return -1;
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return h264->subsystem->Compress(h264, h264->pYUVData, h264->iStride, ppDstData, pDstSize);
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}
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INT32 avc444_compress(H264_CONTEXT* h264, const BYTE* pSrcData, DWORD SrcFormat,
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UINT32 nSrcStep, UINT32 nSrcWidth, UINT32 nSrcHeight,
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BYTE version, BYTE* op, BYTE** ppDstData, UINT32* pDstSize,
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BYTE** ppAuxDstData, UINT32* pAuxDstSize)
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{
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prim_size_t roi;
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primitives_t* prims = primitives_get();
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BYTE* coded;
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UINT32 codedSize;
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if (!h264)
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return -1;
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if (!h264->subsystem->Compress)
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return -1;
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if (!avc420_ensure_buffer(h264, nSrcStep, nSrcWidth, nSrcHeight))
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return -1;
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if (!avc444_ensure_buffer(h264, nSrcHeight))
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return -1;
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roi.width = nSrcWidth;
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roi.height = nSrcHeight;
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switch (version)
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{
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case 1:
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if (prims->RGBToAVC444YUV(pSrcData, SrcFormat, nSrcStep, h264->pYUV444Data, h264->iStride,
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h264->pYUVData, h264->iStride, &roi) != PRIMITIVES_SUCCESS)
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return -1;
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break;
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case 2:
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if (prims->RGBToAVC444YUVv2(pSrcData, SrcFormat, nSrcStep, h264->pYUV444Data, h264->iStride,
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h264->pYUVData, h264->iStride, &roi) != PRIMITIVES_SUCCESS)
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return -1;
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break;
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default:
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return -1;
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}
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if (h264->subsystem->Compress(h264, h264->pYUV444Data, h264->iStride, &coded, &codedSize) < 0)
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return -1;
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memcpy(h264->lumaData, coded, codedSize);
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*ppDstData = h264->lumaData;
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*pDstSize = codedSize;
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if (h264->subsystem->Compress(h264, h264->pYUVData, h264->iStride, &coded, &codedSize) < 0)
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return -1;
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*ppAuxDstData = coded;
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*pAuxDstSize = codedSize;
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*op = 0;
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return 0;
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}
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static BOOL avc444_ensure_buffer(H264_CONTEXT* h264,
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DWORD nDstHeight)
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{
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UINT32 x;
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const UINT32* piMainStride = h264->iStride;
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UINT32* piDstSize = h264->iYUV444Size;
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UINT32* piDstStride = h264->iYUV444Stride;
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BYTE** ppYUVDstData = h264->pYUV444Data;
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UINT32 padDstHeight = nDstHeight + 16; /* Need alignment to 16x16 blocks */
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if ((piMainStride[0] != piDstStride[0]) ||
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(piDstSize[0] != piMainStride[0] * padDstHeight))
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{
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for (x = 0; x < 3; x++)
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{
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piDstStride[x] = piMainStride[0];
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piDstSize[x] = piDstStride[x] * padDstHeight;
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_aligned_free(ppYUVDstData[x]);
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ppYUVDstData[x] = _aligned_malloc(piDstSize[x], 16);
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if (!ppYUVDstData[x])
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goto fail;
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memset(ppYUVDstData[x], 0, piDstSize[x]);
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}
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_aligned_free(h264->lumaData);
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h264->lumaData = _aligned_malloc(piDstSize[0] * 4, 16);
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}
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for (x = 0; x < 3; x++)
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{
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if (!ppYUVDstData[x] || (piDstSize[x] == 0) || (piDstStride[x] == 0))
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{
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WLog_Print(h264->log, WLOG_ERROR, "YUV buffer not initialized! check your decoder settings");
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goto fail;
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}
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}
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if (!h264->lumaData)
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goto fail;
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return TRUE;
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fail:
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_aligned_free(ppYUVDstData[0]);
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_aligned_free(ppYUVDstData[1]);
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_aligned_free(ppYUVDstData[2]);
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_aligned_free(h264->lumaData);
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ppYUVDstData[0] = NULL;
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ppYUVDstData[1] = NULL;
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ppYUVDstData[2] = NULL;
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h264->lumaData = NULL;
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return FALSE;
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}
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static BOOL avc444_process_rects(H264_CONTEXT* h264, const BYTE* pSrcData,
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UINT32 SrcSize, BYTE* pDstData, UINT32 DstFormat, UINT32 nDstStep,
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UINT32 nDstWidth, UINT32 nDstHeight,
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const RECTANGLE_16* rects, UINT32 nrRects,
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avc444_frame_type type)
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{
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const primitives_t* prims = primitives_get();
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UINT32 x;
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UINT32* piDstStride = h264->iYUV444Stride;
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BYTE** ppYUVDstData = h264->pYUV444Data;
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const UINT32* piStride = h264->iStride;
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const BYTE** ppYUVData = (const BYTE**)h264->pYUVData;
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if (h264->subsystem->Decompress(h264, pSrcData, SrcSize) < 0)
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return FALSE;
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if (!avc444_ensure_buffer(h264, nDstHeight))
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return FALSE;
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for (x = 0; x < nrRects; x++)
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{
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const RECTANGLE_16* rect = &rects[x];
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const UINT32 alignedWidth = h264->width + ((h264->width % 16 != 0) ? 16 - h264->width % 16 : 0);
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const UINT32 alignedHeight = h264->height + ((h264->height % 16 != 0) ? 16 - h264->height % 16 : 0);
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if (!check_rect(h264, rect, nDstWidth, nDstHeight))
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continue;
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if (prims->YUV420CombineToYUV444(type, ppYUVData, piStride,
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alignedWidth, alignedHeight,
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ppYUVDstData, piDstStride,
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rect) != PRIMITIVES_SUCCESS)
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return FALSE;
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}
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if (!avc_yuv_to_rgb(h264, rects, nrRects, nDstWidth,
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nDstHeight, nDstStep, pDstData, DstFormat, TRUE))
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return FALSE;
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return TRUE;
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}
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#if defined(AVC444_FRAME_STAT)
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static UINT64 op1 = 0;
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static double op1sum = 0;
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static UINT64 op2 = 0;
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static double op2sum = 0;
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static UINT64 op3 = 0;
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static double op3sum = 0;
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static double avg(UINT64* count, double old, double size)
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{
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double tmp = size + *count * old;
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(*count)++;
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tmp = tmp / *count;
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return tmp;
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}
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#endif
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INT32 avc444_decompress(H264_CONTEXT* h264, BYTE op,
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RECTANGLE_16* regionRects, UINT32 numRegionRects,
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const BYTE* pSrcData, UINT32 SrcSize,
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RECTANGLE_16* auxRegionRects, UINT32 numAuxRegionRect,
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const BYTE* pAuxSrcData, UINT32 AuxSrcSize,
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BYTE* pDstData, DWORD DstFormat,
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UINT32 nDstStep, UINT32 nDstWidth, UINT32 nDstHeight,
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UINT32 codecId)
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{
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INT32 status = -1;
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avc444_frame_type chroma = (codecId == RDPGFX_CODECID_AVC444) ? AVC444_CHROMAv1 : AVC444_CHROMAv2;
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if (!h264 || !regionRects ||
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!pSrcData || !pDstData)
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return -1001;
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switch (op)
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{
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case 0: /* YUV420 in stream 1
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* Chroma420 in stream 2 */
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if (!avc444_process_rects(h264, pSrcData, SrcSize, pDstData, DstFormat, nDstStep, nDstWidth,
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nDstHeight,
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regionRects, numRegionRects, AVC444_LUMA))
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status = -1;
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else if (!avc444_process_rects(h264, pAuxSrcData, AuxSrcSize, pDstData, DstFormat, nDstStep,
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nDstWidth, nDstHeight,
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auxRegionRects, numAuxRegionRect, chroma))
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status = -1;
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else
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status = 0;
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break;
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case 2: /* Chroma420 in stream 1 */
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if (!avc444_process_rects(h264, pSrcData, SrcSize, pDstData, DstFormat, nDstStep, nDstWidth,
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nDstHeight,
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regionRects, numRegionRects, chroma))
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status = -1;
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else
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status = 0;
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break;
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case 1: /* YUV420 in stream 1 */
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if (!avc444_process_rects(h264, pSrcData, SrcSize, pDstData, DstFormat, nDstStep, nDstWidth,
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nDstHeight,
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regionRects, numRegionRects, AVC444_LUMA))
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status = -1;
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else
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status = 0;
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break;
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default: /* WTF? */
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break;
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}
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#if defined(AVC444_FRAME_STAT)
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switch (op)
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{
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case 0:
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op1sum = avg(&op1, op1sum, SrcSize + AuxSrcSize);
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break;
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case 1:
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op2sum = avg(&op2, op2sum, SrcSize);
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break;
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case 2:
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op3sum = avg(&op3, op3sum, SrcSize);
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break;
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default:
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break;
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}
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WLog_Print(h264->log, WLOG_INFO,
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"luma=%"PRIu64" [avg=%lf] chroma=%"PRIu64" [avg=%lf] combined=%"PRIu64" [avg=%lf]",
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op1, op1sum, op2, op2sum, op3, op3sum);
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#endif
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return status;
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}
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#define MAX_SUBSYSTEMS 10
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static INIT_ONCE subsystems_once = INIT_ONCE_STATIC_INIT;
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static H264_CONTEXT_SUBSYSTEM* subSystems[MAX_SUBSYSTEMS];
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#if defined(_WIN32) && defined(WITH_MEDIA_FOUNDATION)
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extern H264_CONTEXT_SUBSYSTEM g_Subsystem_MF;
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#endif
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static BOOL CALLBACK h264_register_subsystems(PINIT_ONCE once, PVOID param, PVOID* context)
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{
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int i = 0;
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ZeroMemory(subSystems, sizeof(subSystems));
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#if defined(_WIN32) && defined(WITH_MEDIA_FOUNDATION)
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{
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subSystems[i] = &g_Subsystem_MF;
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i++;
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}
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#endif
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#ifdef WITH_OPENH264
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{
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extern H264_CONTEXT_SUBSYSTEM g_Subsystem_OpenH264;
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subSystems[i] = &g_Subsystem_OpenH264;
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i++;
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}
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#endif
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#ifdef WITH_FFMPEG
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{
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extern H264_CONTEXT_SUBSYSTEM g_Subsystem_libavcodec;
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subSystems[i] = &g_Subsystem_libavcodec;
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i++;
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}
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#endif
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#ifdef WITH_X264
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{
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extern H264_CONTEXT_SUBSYSTEM g_Subsystem_x264;
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subSystems[i] = &g_Subsystem_x264;
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i++;
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}
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#endif
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return i > 0;
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}
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BOOL h264_context_init(H264_CONTEXT* h264)
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{
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int i;
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if (!h264)
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return FALSE;
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h264->log = WLog_Get(TAG);
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if (!h264->log)
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return FALSE;
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h264->subsystem = NULL;
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InitOnceExecuteOnce(&subsystems_once, h264_register_subsystems, NULL, NULL);
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for (i = 0; i < MAX_SUBSYSTEMS; i++)
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{
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H264_CONTEXT_SUBSYSTEM* subsystem = subSystems[i];
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if (!subsystem || !subsystem->Init)
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break;
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if (subsystem->Init(h264))
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{
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h264->subsystem = subsystem;
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return TRUE;
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}
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}
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return FALSE;
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}
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BOOL h264_context_reset(H264_CONTEXT* h264, UINT32 width, UINT32 height)
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{
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if (!h264)
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return FALSE;
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h264->width = width;
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h264->height = height;
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return TRUE;
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}
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H264_CONTEXT* h264_context_new(BOOL Compressor)
|
|
{
|
|
H264_CONTEXT* h264;
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h264 = (H264_CONTEXT*) calloc(1, sizeof(H264_CONTEXT));
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if (h264)
|
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{
|
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h264->Compressor = Compressor;
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if (Compressor)
|
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{
|
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/* Default compressor settings, may be changed by caller */
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h264->BitRate = 1000000;
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h264->FrameRate = 30;
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}
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if (!h264_context_init(h264))
|
|
{
|
|
free(h264);
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return NULL;
|
|
}
|
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}
|
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|
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return h264;
|
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}
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void h264_context_free(H264_CONTEXT* h264)
|
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{
|
|
if (h264)
|
|
{
|
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h264->subsystem->Uninit(h264);
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_aligned_free(h264->pYUV444Data[0]);
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_aligned_free(h264->pYUV444Data[1]);
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_aligned_free(h264->pYUV444Data[2]);
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_aligned_free(h264->lumaData);
|
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free(h264);
|
|
}
|
|
}
|