2013-12-13 01:45:29 +08:00
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/*
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* ZoneMinder Libvlc Camera Class Implementation, $Date$, $Revision$
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* Copyright (C) 2001-2008 Philip Coombes
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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2016-12-26 23:23:16 +08:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2021-02-04 11:47:28 +08:00
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*/
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2013-12-13 01:45:29 +08:00
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#include "zm_libvlc_camera.h"
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2021-02-04 11:47:28 +08:00
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#include "zm_packet.h"
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#include "zm_signal.h"
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#include "zm_utils.h"
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#include <dlfcn.h>
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2013-12-13 01:45:29 +08:00
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#if HAVE_LIBVLC
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2020-04-14 01:11:57 +08:00
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static void *libvlc_lib = nullptr;
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static void (*libvlc_media_player_release_f)(libvlc_media_player_t* ) = nullptr;
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static void (*libvlc_media_release_f)(libvlc_media_t* ) = nullptr;
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static void (*libvlc_release_f)(libvlc_instance_t* ) = nullptr;
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static void (*libvlc_media_player_stop_f)(libvlc_media_player_t* ) = nullptr;
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static libvlc_instance_t* (*libvlc_new_f)(int, const char* const *) = nullptr;
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static void (*libvlc_log_set_f)(libvlc_instance_t*, libvlc_log_cb, void *) = nullptr;
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static libvlc_media_t* (*libvlc_media_new_location_f)(libvlc_instance_t*, const char*) = nullptr;
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static libvlc_media_player_t* (*libvlc_media_player_new_from_media_f)(libvlc_media_t*) = nullptr;
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static void (*libvlc_video_set_format_f)(libvlc_media_player_t*, const char*, unsigned, unsigned, unsigned) = nullptr;
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static void (*libvlc_video_set_callbacks_f)(libvlc_media_player_t*, libvlc_video_lock_cb, libvlc_video_unlock_cb, libvlc_video_display_cb, void*) = nullptr;
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static int (*libvlc_media_player_play_f)(libvlc_media_player_t *) = nullptr;
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static const char* (*libvlc_errmsg_f)(void) = nullptr;
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static const char* (*libvlc_get_version_f)(void) = nullptr;
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2013-12-13 01:45:29 +08:00
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2020-04-14 01:11:57 +08:00
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void bind_libvlc_symbols() {
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if(libvlc_lib != nullptr) // Safe-check
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return;
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libvlc_lib = dlopen("libvlc.so", RTLD_LAZY | RTLD_GLOBAL);
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if(!libvlc_lib){
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Error("Error loading libvlc: %s", dlerror());
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return;
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}
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2013-12-13 01:45:29 +08:00
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2020-04-14 01:11:57 +08:00
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*(void**) (&libvlc_media_player_release_f) = dlsym(libvlc_lib, "libvlc_media_player_release");
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*(void**) (&libvlc_media_release_f) = dlsym(libvlc_lib, "libvlc_media_release");
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*(void**) (&libvlc_release_f) = dlsym(libvlc_lib, "libvlc_release");
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*(void**) (&libvlc_media_player_stop_f) = dlsym(libvlc_lib, "libvlc_media_player_stop");
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*(void**) (&libvlc_new_f) = dlsym(libvlc_lib, "libvlc_new");
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*(void**) (&libvlc_log_set_f) = dlsym(libvlc_lib, "libvlc_log_set");
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*(void**) (&libvlc_media_new_location_f) = dlsym(libvlc_lib, "libvlc_media_new_location");
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*(void**) (&libvlc_media_player_new_from_media_f) = dlsym(libvlc_lib, "libvlc_media_player_new_from_media");
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*(void**) (&libvlc_video_set_format_f) = dlsym(libvlc_lib, "libvlc_video_set_format");
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*(void**) (&libvlc_video_set_callbacks_f) = dlsym(libvlc_lib, "libvlc_video_set_callbacks");
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*(void**) (&libvlc_media_player_play_f) = dlsym(libvlc_lib, "libvlc_media_player_play");
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*(void**) (&libvlc_errmsg_f) = dlsym(libvlc_lib, "libvlc_errmsg");
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*(void**) (&libvlc_get_version_f) = dlsym(libvlc_lib, "libvlc_get_version");
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}
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2013-12-20 07:02:21 +08:00
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// Do all the buffer checking work here to avoid unnecessary locking
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2017-11-13 00:42:34 +08:00
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void* LibvlcLockBuffer(void* opaque, void** planes) {
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2017-11-19 05:00:10 +08:00
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LibvlcPrivateData* data = reinterpret_cast<LibvlcPrivateData*>(opaque);
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2016-06-22 00:21:18 +08:00
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data->mutex.lock();
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uint8_t* buffer = data->buffer;
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data->buffer = data->prevBuffer;
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data->prevBuffer = buffer;
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*planes = data->buffer;
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2020-08-26 07:45:48 +08:00
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return nullptr;
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2013-12-13 01:45:29 +08:00
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}
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2017-11-13 00:42:34 +08:00
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void LibvlcUnlockBuffer(void* opaque, void* picture, void *const *planes) {
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2017-11-19 05:00:10 +08:00
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LibvlcPrivateData* data = reinterpret_cast<LibvlcPrivateData*>(opaque);
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2016-06-22 00:21:18 +08:00
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bool newFrame = false;
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2018-05-07 22:27:26 +08:00
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for( unsigned int i=0; i < data->bufferSize; i++ ) {
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2017-11-13 00:42:34 +08:00
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if ( data->buffer[i] != data->prevBuffer[i] ) {
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2016-06-22 00:21:18 +08:00
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newFrame = true;
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break;
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2013-12-20 07:02:21 +08:00
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}
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2016-06-22 00:21:18 +08:00
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}
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data->mutex.unlock();
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time_t now;
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time(&now);
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// Return frames slightly faster than 1fps (if time() supports greater than one second resolution)
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2017-11-13 00:42:34 +08:00
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if ( newFrame || difftime(now, data->prevTime) >= 0.8 ) {
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2016-06-22 00:21:18 +08:00
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data->prevTime = now;
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2021-03-03 16:20:06 +08:00
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{
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std::lock_guard<std::mutex> lck(data->newImageMutex);
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data->newImage = true;
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}
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data->newImageCv.notify_all();
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2016-06-22 00:21:18 +08:00
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}
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2013-12-13 01:45:29 +08:00
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}
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2018-05-07 22:27:26 +08:00
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LibvlcCamera::LibvlcCamera(
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2021-02-08 02:12:39 +08:00
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const Monitor *monitor,
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2018-05-07 22:27:26 +08:00
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const std::string &p_path,
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const std::string &p_method,
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const std::string &p_options,
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int p_width,
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int p_height,
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int p_colours,
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int p_brightness,
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int p_contrast,
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int p_hue,
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int p_colour,
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bool p_capture,
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bool p_record_audio
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) :
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Camera(
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2021-02-08 02:12:39 +08:00
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monitor,
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2018-05-07 22:27:26 +08:00
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LIBVLC_SRC,
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p_width,
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p_height,
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p_colours,
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ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours),
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p_brightness,
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p_contrast,
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p_hue,
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p_colour,
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p_capture,
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p_record_audio
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),
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mPath(p_path),
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mMethod(p_method),
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mOptions(p_options)
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2016-06-22 00:21:18 +08:00
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{
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2020-08-26 07:45:48 +08:00
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mLibvlcInstance = nullptr;
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mLibvlcMedia = nullptr;
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mLibvlcMediaPlayer = nullptr;
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mLibvlcData.buffer = nullptr;
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mLibvlcData.prevBuffer = nullptr;
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mOptArgV = nullptr;
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2016-06-22 00:21:18 +08:00
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/* Has to be located inside the constructor so other components such as zma will receive correct colours and subpixel order */
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2018-05-07 22:27:26 +08:00
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if ( colours == ZM_COLOUR_RGB32 ) {
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2016-06-22 00:21:18 +08:00
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subpixelorder = ZM_SUBPIX_ORDER_BGRA;
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mTargetChroma = "RV32";
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mBpp = 4;
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2018-05-07 22:27:26 +08:00
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} else if ( colours == ZM_COLOUR_RGB24 ) {
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2016-06-22 00:21:18 +08:00
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subpixelorder = ZM_SUBPIX_ORDER_BGR;
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mTargetChroma = "RV24";
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mBpp = 3;
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2018-05-07 22:27:26 +08:00
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} else if ( colours == ZM_COLOUR_GRAY8 ) {
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2016-06-22 00:21:18 +08:00
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subpixelorder = ZM_SUBPIX_ORDER_NONE;
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mTargetChroma = "GREY";
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mBpp = 1;
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} else {
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2017-12-13 01:37:36 +08:00
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mBpp = 0;
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2016-06-22 00:21:18 +08:00
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Panic("Unexpected colours: %d",colours);
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}
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2017-11-13 00:42:34 +08:00
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if ( capture ) {
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2016-06-22 00:21:18 +08:00
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Initialise();
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}
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2013-12-13 01:45:29 +08:00
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}
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2017-11-13 00:42:34 +08:00
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LibvlcCamera::~LibvlcCamera() {
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if ( capture ) {
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2016-06-22 00:21:18 +08:00
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Terminate();
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}
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2021-03-03 16:20:06 +08:00
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mLibvlcData.newImageCv.notify_all(); // to unblock on termination (zm_terminate)
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2020-08-26 07:45:48 +08:00
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if ( mLibvlcMediaPlayer != nullptr ) {
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2020-04-14 01:11:57 +08:00
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(*libvlc_media_player_release_f)(mLibvlcMediaPlayer);
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2020-08-26 07:45:48 +08:00
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mLibvlcMediaPlayer = nullptr;
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2016-06-22 00:21:18 +08:00
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}
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2020-08-26 07:45:48 +08:00
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if ( mLibvlcMedia != nullptr ) {
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2020-04-14 01:11:57 +08:00
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(*libvlc_media_release_f)(mLibvlcMedia);
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2020-08-26 07:45:48 +08:00
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mLibvlcMedia = nullptr;
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2016-06-22 00:21:18 +08:00
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}
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2020-08-26 07:45:48 +08:00
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if ( mLibvlcInstance != nullptr ) {
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2020-04-14 01:11:57 +08:00
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(*libvlc_release_f)(mLibvlcInstance);
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2020-08-26 07:45:48 +08:00
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mLibvlcInstance = nullptr;
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2016-06-22 00:21:18 +08:00
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}
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2021-02-20 09:41:41 +08:00
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if (libvlc_lib) {
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dlclose(libvlc_lib);
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libvlc_lib = nullptr;
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}
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2020-08-26 07:45:48 +08:00
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if ( mOptArgV != nullptr ) {
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2016-06-22 00:21:18 +08:00
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delete[] mOptArgV;
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}
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2013-12-13 01:45:29 +08:00
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}
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2017-11-13 00:42:34 +08:00
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void LibvlcCamera::Initialise() {
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2020-04-14 01:11:57 +08:00
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bind_libvlc_symbols();
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2013-12-13 01:45:29 +08:00
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}
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2017-11-13 00:42:34 +08:00
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void LibvlcCamera::Terminate() {
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2020-04-14 01:11:57 +08:00
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(*libvlc_media_player_stop_f)(mLibvlcMediaPlayer);
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2018-05-07 22:27:26 +08:00
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if ( mLibvlcData.buffer ) {
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2016-06-22 00:21:18 +08:00
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zm_freealigned(mLibvlcData.buffer);
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2020-08-26 07:45:48 +08:00
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mLibvlcData.buffer = nullptr;
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2016-06-22 00:21:18 +08:00
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}
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2020-04-14 01:11:57 +08:00
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2018-05-07 22:27:26 +08:00
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if ( mLibvlcData.prevBuffer ) {
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2016-06-22 00:21:18 +08:00
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zm_freealigned(mLibvlcData.prevBuffer);
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2020-08-26 07:45:48 +08:00
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mLibvlcData.prevBuffer = nullptr;
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2016-06-22 00:21:18 +08:00
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}
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2013-12-13 01:45:29 +08:00
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}
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2017-11-13 00:42:34 +08:00
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int LibvlcCamera::PrimeCapture() {
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2020-07-14 03:03:04 +08:00
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Debug(1, "Priming capture from %s, libvlc version %s", mPath.c_str(), (*libvlc_get_version_f)());
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2016-06-22 00:21:18 +08:00
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StringVector opVect = split(Options(), ",");
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// Set transport method as specified by method field, rtpUni is default
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if ( Method() == "rtpMulti" )
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opVect.push_back("--rtsp-mcast");
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else if ( Method() == "rtpRtsp" )
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opVect.push_back("--rtsp-tcp");
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else if ( Method() == "rtpRtspHttp" )
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opVect.push_back("--rtsp-http");
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2018-05-07 22:27:26 +08:00
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opVect.push_back("--no-audio");
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2017-11-13 00:42:34 +08:00
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if ( opVect.size() > 0 ) {
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2016-06-22 00:21:18 +08:00
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mOptArgV = new char*[opVect.size()];
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Debug(2, "Number of Options: %d",opVect.size());
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for (size_t i=0; i< opVect.size(); i++) {
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opVect[i] = trimSpaces(opVect[i]);
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mOptArgV[i] = (char *)opVect[i].c_str();
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Debug(2, "set option %d to '%s'", i, opVect[i].c_str());
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2014-05-05 19:29:12 +08:00
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}
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2016-06-22 00:21:18 +08:00
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}
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2020-04-14 01:11:57 +08:00
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mLibvlcInstance = (*libvlc_new_f)(opVect.size(), (const char* const*)mOptArgV);
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2020-08-26 07:45:48 +08:00
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if ( mLibvlcInstance == nullptr ) {
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2020-04-14 01:11:57 +08:00
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Error("Unable to create libvlc instance due to: %s", (*libvlc_errmsg_f)());
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2018-05-07 22:27:26 +08:00
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return -1;
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}
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2020-08-26 07:45:48 +08:00
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(*libvlc_log_set_f)(mLibvlcInstance, LibvlcCamera::log_callback, nullptr);
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2019-01-09 02:06:19 +08:00
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2016-06-22 00:21:18 +08:00
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2020-04-14 01:11:57 +08:00
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mLibvlcMedia = (*libvlc_media_new_location_f)(mLibvlcInstance, mPath.c_str());
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2020-08-26 07:45:48 +08:00
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if ( mLibvlcMedia == nullptr ) {
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2020-04-14 01:11:57 +08:00
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Error("Unable to open input %s due to: %s", mPath.c_str(), (*libvlc_errmsg_f)());
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2018-05-07 22:27:26 +08:00
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return -1;
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}
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2014-05-05 19:29:12 +08:00
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2020-04-14 01:11:57 +08:00
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mLibvlcMediaPlayer = (*libvlc_media_player_new_from_media_f)(mLibvlcMedia);
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2020-08-26 07:45:48 +08:00
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if ( mLibvlcMediaPlayer == nullptr ) {
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2020-04-14 01:11:57 +08:00
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Error("Unable to create player for %s due to: %s", mPath.c_str(), (*libvlc_errmsg_f)());
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2018-05-07 22:27:26 +08:00
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return -1;
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}
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2016-06-22 00:21:18 +08:00
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2020-04-14 01:11:57 +08:00
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(*libvlc_video_set_format_f)(mLibvlcMediaPlayer, mTargetChroma.c_str(), width, height, width * mBpp);
|
2020-08-26 07:45:48 +08:00
|
|
|
(*libvlc_video_set_callbacks_f)(mLibvlcMediaPlayer, &LibvlcLockBuffer, &LibvlcUnlockBuffer, nullptr, &mLibvlcData);
|
2016-06-22 00:21:18 +08:00
|
|
|
|
|
|
|
mLibvlcData.bufferSize = width * height * mBpp;
|
|
|
|
// Libvlc wants 32 byte alignment for images (should in theory do this for all image lines)
|
2017-04-16 15:57:37 +08:00
|
|
|
mLibvlcData.buffer = (uint8_t*)zm_mallocaligned(64, mLibvlcData.bufferSize);
|
|
|
|
mLibvlcData.prevBuffer = (uint8_t*)zm_mallocaligned(64, mLibvlcData.bufferSize);
|
2021-03-03 16:20:06 +08:00
|
|
|
|
|
|
|
mLibvlcData.newImage = false;
|
2016-06-22 00:21:18 +08:00
|
|
|
|
2020-04-14 01:11:57 +08:00
|
|
|
(*libvlc_media_player_play_f)(mLibvlcMediaPlayer);
|
2016-06-22 00:21:18 +08:00
|
|
|
|
2017-11-13 00:42:34 +08:00
|
|
|
return 0;
|
2013-12-13 01:45:29 +08:00
|
|
|
}
|
|
|
|
|
2019-01-09 02:06:19 +08:00
|
|
|
|
2017-11-13 00:42:34 +08:00
|
|
|
int LibvlcCamera::PreCapture() {
|
2018-05-07 22:27:26 +08:00
|
|
|
return 0;
|
2013-12-13 01:45:29 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
// Should not return -1 as cancels capture. Always wait for image if available.
|
2017-11-13 00:42:34 +08:00
|
|
|
int LibvlcCamera::Capture( ZMPacket &zm_packet ) {
|
2018-05-07 23:08:06 +08:00
|
|
|
// newImage is a mutex/condition based flag to tell us when there is an image available
|
2021-03-03 16:20:06 +08:00
|
|
|
{
|
|
|
|
std::unique_lock<std::mutex> lck(mLibvlcData.newImageMutex);
|
|
|
|
mLibvlcData.newImageCv.wait(lck, [&]{ return mLibvlcData.newImage || zm_terminate; });
|
|
|
|
mLibvlcData.newImage = false;
|
2018-05-07 22:27:26 +08:00
|
|
|
}
|
2014-10-23 16:56:35 +08:00
|
|
|
|
2021-03-03 16:20:06 +08:00
|
|
|
if (zm_terminate)
|
|
|
|
return 0;
|
|
|
|
|
2016-06-22 00:21:18 +08:00
|
|
|
mLibvlcData.mutex.lock();
|
2017-11-13 00:42:34 +08:00
|
|
|
zm_packet.image->Assign(width, height, colours, subpixelorder, mLibvlcData.buffer, width * height * mBpp);
|
2021-03-04 01:06:34 +08:00
|
|
|
zm_packet.packet.stream_index = mVideoStreamId;
|
|
|
|
zm_packet.stream = mVideoStream;
|
2016-06-22 00:21:18 +08:00
|
|
|
mLibvlcData.mutex.unlock();
|
2014-10-23 16:56:35 +08:00
|
|
|
|
2017-11-13 00:42:34 +08:00
|
|
|
return 1;
|
2014-10-23 16:56:35 +08:00
|
|
|
}
|
|
|
|
|
2017-11-13 00:42:34 +08:00
|
|
|
int LibvlcCamera::PostCapture() {
|
2018-05-07 22:27:26 +08:00
|
|
|
return 0;
|
2013-12-13 01:45:29 +08:00
|
|
|
}
|
|
|
|
|
2019-01-09 02:06:19 +08:00
|
|
|
void LibvlcCamera::log_callback(void *ptr, int level, const libvlc_log_t *ctx, const char *fmt, va_list vargs) {
|
|
|
|
Logger *log = Logger::fetch();
|
|
|
|
int log_level = Logger::NOLOG;
|
|
|
|
if ( level == LIBVLC_ERROR ) {
|
|
|
|
log_level = Logger::WARNING; // ffmpeg outputs a lot of errors that don't really affect anything.
|
|
|
|
//log_level = Logger::ERROR;
|
|
|
|
} else if ( level == LIBVLC_WARNING ) {
|
|
|
|
log_level = Logger::INFO;
|
|
|
|
//log_level = Logger::WARNING;
|
|
|
|
} else if ( level == LIBVLC_NOTICE ) {
|
|
|
|
log_level = Logger::DEBUG1;
|
|
|
|
//log_level = Logger::INFO;
|
|
|
|
} else if ( level == LIBVLC_DEBUG ) {
|
|
|
|
log_level = Logger::DEBUG3;
|
|
|
|
} else {
|
|
|
|
Error("Unknown log level %d", level);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( log ) {
|
|
|
|
char logString[8192];
|
|
|
|
vsnprintf(logString, sizeof(logString)-1, fmt, vargs);
|
|
|
|
log->logPrint(false, __FILE__, __LINE__, log_level, logString);
|
|
|
|
}
|
|
|
|
}
|
2013-12-13 01:45:29 +08:00
|
|
|
#endif // HAVE_LIBVLC
|