373 lines
8.0 KiB
C++
373 lines
8.0 KiB
C++
/***************************************************************************************
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*
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* IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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*
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* By downloading, copying, installing or using the software you agree to this license.
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* If you do not agree to this license, do not download, install,
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* copy or use the software.
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*
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* Copyright (C) 2014-2022, Happytimesoft Corporation, all rights reserved.
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*
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* Redistribution and use in binary forms, with or without modification, are permitted.
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
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* language governing permissions and limitations under the License.
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*
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****************************************************************************************/
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#include "sys_inc.h"
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#include "screen_capture_linux.h"
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#include "media_format.h"
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#include "lock.h"
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#include "xcb_util.h"
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/**************************************************************************************/
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void * screenCaptureThread(void * argv)
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{
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CLScreenCapture *capture = (CLScreenCapture *)argv;
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capture->captureThread();
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return NULL;
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}
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/**************************************************************************************/
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CLScreenCapture::CLScreenCapture() : CScreenCapture()
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{
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m_pConn = NULL;
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m_pScreen = NULL;
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}
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CLScreenCapture::~CLScreenCapture()
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{
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stopCapture();
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}
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CScreenCapture * CLScreenCapture::getInstance(int devid)
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{
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if (devid < 0 || devid >= MAX_MONITOR_NUMS)
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{
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return NULL;
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}
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sys_os_mutex_enter(m_pInstMutex);
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if (NULL == m_pInstance[devid])
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{
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m_pInstance[devid] = (CScreenCapture *) new CLScreenCapture;
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if (m_pInstance[devid])
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{
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m_pInstance[devid]->m_nRefCnt++;
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m_pInstance[devid]->m_nDevIndex = devid;
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}
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}
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else
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{
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m_pInstance[devid]->m_nRefCnt++;
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}
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sys_os_mutex_leave(m_pInstMutex);
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return m_pInstance[devid];
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}
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int CLScreenCapture::getDeviceNums()
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{
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int count = 0;
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xcb_connection_t * c = xcb_connect(NULL, NULL);
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const xcb_setup_t * setup;
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if (xcb_connection_has_error(c))
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{
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log_print(HT_LOG_ERR, "%s, Cannot open display %s, error %d\r\n", __FUNCTION__, "default");
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return 0;
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}
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setup = xcb_get_setup(c);
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count = xcb_setup_roots_length(setup);
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xcb_disconnect(c);
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return count > MAX_MONITOR_NUMS ? MAX_MONITOR_NUMS : count;
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}
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int CLScreenCapture::getPixfmt(int depth)
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{
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const xcb_setup_t *setup = xcb_get_setup(m_pConn);
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const xcb_format_t *fmt = xcb_setup_pixmap_formats(setup);
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int length = xcb_setup_pixmap_formats_length(setup);
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int pix_fmt = 0;
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while (length--)
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{
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if (fmt->depth == depth)
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{
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switch (depth)
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{
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case 32:
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if (fmt->bits_per_pixel == 32)
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pix_fmt = AV_PIX_FMT_0RGB;
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break;
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case 24:
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if (fmt->bits_per_pixel == 32)
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pix_fmt = AV_PIX_FMT_0RGB32;
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else if (fmt->bits_per_pixel == 24)
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pix_fmt = AV_PIX_FMT_RGB24;
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break;
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case 16:
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if (fmt->bits_per_pixel == 16)
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pix_fmt = AV_PIX_FMT_RGB565;
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break;
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case 15:
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if (fmt->bits_per_pixel == 16)
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pix_fmt = AV_PIX_FMT_RGB555;
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break;
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case 8:
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if (fmt->bits_per_pixel == 8)
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pix_fmt = AV_PIX_FMT_RGB8;
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break;
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}
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}
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if (pix_fmt)
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{
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return pix_fmt;
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}
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fmt++;
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}
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return AV_PIX_FMT_NONE;
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}
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BOOL CLScreenCapture::initCapture(int codec, int width, int height, double framerate, int bitrate)
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{
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CLock lock(m_pMutex);
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if (m_bInited)
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{
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return TRUE;
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}
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const xcb_setup_t *setup;
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m_pConn = xcb_connect(NULL, NULL);
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if (xcb_connection_has_error(m_pConn))
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{
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log_print(HT_LOG_ERR, "%s, Cannot open display %s\r\n", __FUNCTION__, "default");
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return FALSE;
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}
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setup = xcb_get_setup(m_pConn);
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m_pScreen = xcb_get_screen(setup, m_nDevIndex);
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if (!m_pScreen)
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{
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xcb_disconnect(m_pConn);
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m_pConn = NULL;
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log_print(HT_LOG_ERR, "%s, The screen %d does not exist\r\n", __FUNCTION__, m_nDevIndex);
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return FALSE;
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}
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xcb_get_geometry_cookie_t gc;
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xcb_get_geometry_reply_t *geo;
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gc = xcb_get_geometry(m_pConn, m_pScreen->root);
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geo = xcb_get_geometry_reply(m_pConn, gc, NULL);
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if (!geo)
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{
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xcb_disconnect(m_pConn);
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m_pConn = NULL;
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log_print(HT_LOG_ERR, "%s, xcb_get_geometry_reply failed\r\n", __FUNCTION__);
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return FALSE;
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}
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m_nWidth = geo->width;
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m_nHeight = geo->height;
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m_nPixfmt = getPixfmt(geo->depth);
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m_nFramerate = framerate;
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m_nBitrate = bitrate;
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VideoEncoderParam params;
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memset(¶ms, 0, sizeof(params));
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params.SrcWidth = m_nWidth;
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params.SrcHeight = m_nHeight;
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params.SrcPixFmt = (AVPixelFormat) m_nPixfmt;
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params.DstCodec = codec;
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params.DstWidth = width ? width : m_nWidth;
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params.DstHeight = height ? height : m_nHeight;
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params.DstFramerate = framerate;
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params.DstBitrate = bitrate;
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free(geo);
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if (m_encoder.init(¶ms) == FALSE)
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{
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return FALSE;
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}
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m_bInited = TRUE;
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return TRUE;
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}
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BOOL CLScreenCapture::startCapture()
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{
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CLock lock(m_pMutex);
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if (m_hCapture)
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{
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return TRUE;
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}
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m_bCapture = TRUE;
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m_hCapture = sys_os_create_thread((void *)screenCaptureThread, this);
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return m_hCapture ? TRUE : FALSE;
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}
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void CLScreenCapture::stopCapture()
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{
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m_bCapture = FALSE;
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while (m_hCapture)
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{
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usleep(10*1000);
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}
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if (m_pConn)
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{
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xcb_disconnect(m_pConn);
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m_pConn = NULL;
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}
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m_pScreen = NULL;
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m_bInited = FALSE;
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}
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BOOL CLScreenCapture::capture()
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{
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if (!m_bInited)
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{
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return FALSE;
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}
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BOOL ret = FALSE;
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xcb_get_image_cookie_t iq;
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xcb_get_image_reply_t *img;
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xcb_drawable_t drawable = m_pScreen->root;
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xcb_generic_error_t *e = NULL;
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xcb_get_geometry_cookie_t gc;
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xcb_get_geometry_reply_t *geo;
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gc = xcb_get_geometry(m_pConn, m_pScreen->root);
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geo = xcb_get_geometry_reply(m_pConn, gc, NULL);
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if (!geo)
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{
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log_print(HT_LOG_ERR, "%s, xcb_get_geometry_reply failed\r\n", __FUNCTION__);
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return FALSE;
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}
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int w = geo->width;
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int h = geo->height;
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iq = xcb_get_image(m_pConn, XCB_IMAGE_FORMAT_Z_PIXMAP, drawable, 0, 0, w, h, ~0);
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img = xcb_get_image_reply(m_pConn, iq, &e);
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if (e)
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{
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log_print(HT_LOG_ERR,
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"Cannot get the image data "
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"event_error: response_type:%u error_code:%u "
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"sequence:%u resource_id:%u minor_code:%u major_code:%u\r\n",
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e->response_type, e->error_code,
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e->sequence, e->resource_id, e->minor_code, e->major_code);
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free(e);
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free(geo);
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return FALSE;
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}
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if (!img)
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{
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free(geo);
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return FALSE;
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}
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AVFrame frame;
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memset(&frame, 0, sizeof(frame));
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frame.data[0] = xcb_get_image_data(img);
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frame.linesize[0] = av_image_get_linesize((AVPixelFormat)m_nPixfmt, w, 0);
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frame.extended_data = frame.data;
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frame.width = w;
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frame.height = h;
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frame.format = m_nPixfmt;
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ret = m_encoder.encode(&frame);
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free(img);
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free(geo);
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return ret;
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}
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void CLScreenCapture::captureThread()
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{
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int64 cur_delay = 0;
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int64 pre_delay = 0;
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int timeout = 1000000.0 / m_nFramerate;
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uint32 cur_time = 0;
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uint32 pre_time = 0;
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while (m_bCapture)
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{
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if (capture())
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{
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cur_time = sys_os_get_ms();
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cur_delay = timeout;
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if (pre_time > 0)
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{
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cur_delay += pre_delay - (cur_time - pre_time) * 1000;
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if (cur_delay < 1000)
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{
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cur_delay = 0;
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}
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}
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pre_time = cur_time;
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pre_delay = cur_delay;
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if (cur_delay > 0)
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{
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usleep(cur_delay);
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}
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}
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else
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{
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usleep(10*1000);
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}
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}
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m_hCapture = 0;
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}
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