204 lines
5.2 KiB
C
204 lines
5.2 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Graphics Pipeline Extension
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*
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2015 Thincast Technologies GmbH
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* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.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/stream.h>
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#include <freerdp/log.h>
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#include "rdpgfx_common.h"
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#include "rdpgfx_codec.h"
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#define TAG CHANNELS_TAG("rdpgfx.client")
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT rdpgfx_read_h264_metablock(RDPGFX_PLUGIN* gfx, wStream* s, RDPGFX_H264_METABLOCK* meta)
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{
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UINT32 index;
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RDPGFX_RECT16* regionRect;
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RDPGFX_H264_QUANT_QUALITY* quantQualityVal;
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UINT error = ERROR_INVALID_DATA;
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meta->regionRects = NULL;
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meta->quantQualityVals = NULL;
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if (Stream_GetRemainingLength(s) < 4)
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{
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WLog_ERR(TAG, "not enough data!");
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goto error_out;
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}
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Stream_Read_UINT32(s, meta->numRegionRects); /* numRegionRects (4 bytes) */
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if (Stream_GetRemainingLength(s) < (meta->numRegionRects * 8))
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{
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WLog_ERR(TAG, "not enough data!");
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goto error_out;
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}
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meta->regionRects = (RDPGFX_RECT16*) malloc(meta->numRegionRects * sizeof(RDPGFX_RECT16));
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if (!meta->regionRects)
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{
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WLog_ERR(TAG, "malloc failed!");
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error = CHANNEL_RC_NO_MEMORY;
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goto error_out;
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}
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meta->quantQualityVals = (RDPGFX_H264_QUANT_QUALITY*) malloc(meta->numRegionRects * sizeof(RDPGFX_H264_QUANT_QUALITY));
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if (!meta->quantQualityVals)
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{
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WLog_ERR(TAG, "malloc failed!");
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error = CHANNEL_RC_NO_MEMORY;
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goto error_out;
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}
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WLog_DBG(TAG, "H264_METABLOCK: numRegionRects: %d", (int) meta->numRegionRects);
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for (index = 0; index < meta->numRegionRects; index++)
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{
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regionRect = &(meta->regionRects[index]);
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if ((error = rdpgfx_read_rect16(s, regionRect)))
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{
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WLog_ERR(TAG, "rdpgfx_read_rect16 failed with error %lu!", error);
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goto error_out;
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}
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WLog_DBG(TAG, "regionRects[%d]: left: %d top: %d right: %d bottom: %d",
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index, regionRect->left, regionRect->top, regionRect->right, regionRect->bottom);
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}
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if (Stream_GetRemainingLength(s) < (meta->numRegionRects * 2))
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{
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WLog_ERR(TAG, "not enough data!");
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error = ERROR_INVALID_DATA;
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goto error_out;
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}
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for (index = 0; index < meta->numRegionRects; index++)
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{
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quantQualityVal = &(meta->quantQualityVals[index]);
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Stream_Read_UINT8(s, quantQualityVal->qpVal); /* qpVal (1 byte) */
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Stream_Read_UINT8(s, quantQualityVal->qualityVal); /* qualityVal (1 byte) */
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quantQualityVal->qp = quantQualityVal->qpVal & 0x3F;
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quantQualityVal->r = (quantQualityVal->qpVal >> 6) & 1;
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quantQualityVal->p = (quantQualityVal->qpVal >> 7) & 1;
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WLog_DBG(TAG, "quantQualityVals[%d]: qp: %d r: %d p: %d qualityVal: %d",
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index, quantQualityVal->qp, quantQualityVal->r, quantQualityVal->p, quantQualityVal->qualityVal);
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}
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return CHANNEL_RC_OK;
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error_out:
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free(meta->regionRects);
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meta->regionRects = NULL;
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free(meta->quantQualityVals);
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meta->quantQualityVals = NULL;
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return error;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT rdpgfx_decode_h264(RDPGFX_PLUGIN* gfx, RDPGFX_SURFACE_COMMAND* cmd)
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{
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UINT error;
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wStream* s;
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RDPGFX_H264_BITMAP_STREAM h264;
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RdpgfxClientContext* context = (RdpgfxClientContext*) gfx->iface.pInterface;
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s = Stream_New(cmd->data, cmd->length);
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if (!s)
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{
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WLog_ERR(TAG, "Stream_New failed!");
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return CHANNEL_RC_NO_MEMORY;
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}
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if ((error = rdpgfx_read_h264_metablock(gfx, s, &(h264.meta))))
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{
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WLog_ERR(TAG, "rdpgfx_read_h264_metablock failed with error %lu!", error);
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return error;
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}
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h264.data = Stream_Pointer(s);
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h264.length = (UINT32) Stream_GetRemainingLength(s);
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Stream_Free(s, FALSE);
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cmd->extra = (void*) &h264;
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if (context)
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{
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IFCALLRET(context->SurfaceCommand, error, context, cmd);
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if (error)
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WLog_ERR(TAG, "context->SurfaceCommand failed with error %lu", error);
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}
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free(h264.meta.regionRects);
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free(h264.meta.quantQualityVals);
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return error;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rdpgfx_decode(RDPGFX_PLUGIN* gfx, RDPGFX_SURFACE_COMMAND* cmd)
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{
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UINT error = CHANNEL_RC_OK;
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RdpgfxClientContext* context = (RdpgfxClientContext*) gfx->iface.pInterface;
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switch (cmd->codecId)
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{
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case RDPGFX_CODECID_H264:
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if ((error = rdpgfx_decode_h264(gfx, cmd)))
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{
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WLog_ERR(TAG, "rdpgfx_decode_h264 failed with error %lu", error);
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return error;
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}
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break;
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default:
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if (context)
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{
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IFCALLRET(context->SurfaceCommand, error, context, cmd);
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if (error)
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WLog_ERR(TAG, "context->SurfaceCommand failed with error %lu", error);
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}
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break;
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}
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return error;
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}
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