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‎README.md‎

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# RTSPServer for RTS3903N based YI Cameras
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*While this repo is focused on Yi based cameras, it should compile and run on any RTS3903N based camera!*
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## Background
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It took many hours of research to put this together. The SDK was very hard to find, and I luckily stumbled across it by
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finding similar cameras (TP Link) that had shared the source due to GPL requirements.
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**Important**: This method doesn't overwrite the existing flash, simply remove the SD card, and the 'hack' will be disabled.
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## Getting Started
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- Download the latest zip from the releases page
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- Extract the contents to the root of a MicroSD card (minimum 2GB) that is FAT32 partitioned
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- (Optional) If you're using WiFi, edit Factory/wpa_supplicant.conf and add your WiFi credentials
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- Connect to RTSP via `rtsp://[YOUR_CAMERA_IP]/ch0_0.h264`
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- Does the picture look normal? No, see troubleshooting below
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### What's Working
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- H264 encoded stream via `rtsp://[YOUR_CAMERA_IP]/ch0_0.h264`
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- Telnet server open by default (root, no password)
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- WiFi connection without having to go through the initial vendor pairing process
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- Yi Camera
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- Tested with `7.1.00.25A_202002271051` and
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### TODO:
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- Add audio to the feed
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- Control PTZ (pan/tilt) based cameras
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- ONVIF
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- Better documentation
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- Create a flash version / permanent solution
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## Developers / Compiling
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- Install Docker
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- Run `./compile.sh`
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- This chipset is very capable and there are many features / options available for the encoder see `stream.c` where there are
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calls to `manage_modes`
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- To find out what options are available see `rtsvideo.h` where `enum_rts_video_ctrl_id` is defined.
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- If you create / discover better settings to improve the picture quality, please push to this repo :)
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## Video Quality
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- See the `Developers/Compiling` section and tweak the settings in `stream.c` inside the `start_stream()` function -
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if you find an improved configuration, **please push it to this repo**, so we can all benefit.
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- Significant settings:
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- h264_attr.bps
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- RTS_VIDEO_CTRL_ID_NOISE_REDUCTION
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- RTS_VIDEO_CTRL_ID_LDC
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- RTS_VIDEO_CTRL_ID_DETAIL_ENHANCEMENT
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- RTS_VIDEO_CTRL_ID_3DNR **(Offers significant improvement but can't find the 'sweet' spot)**
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- RTS_VIDEO_CTRL_ID_IR_MODE **(If you're having issues with nightmode)**
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## Troubleshooting
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The RTS3903N has a dedicated ADC that's used for sensing the light, I've discovered that some cameras had their logic inverted
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and to get around this, do the following
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- Create an empty file on the root of the sd card named `invert_adc` (exact path `/sdcard/invert_adc`)
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If this doesn't solve the issue, take a look at the `stream.c` where `sensor_sensitivity` is declared.
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## Credit
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- The RTSPServer part of this repo was taken from another repo, full credit to be given to:
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- `roleo` I believe is the original author[?]
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- `alienatedsec` I copied the modified version that repo

‎build/.gitignore‎

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‎build/CMakeLists.txt‎

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cmake_minimum_required(VERSION 3.19)
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project(RTS3903N_RTSP)
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set(SOURCE_FILES src/stream.c headers)
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set(CMAKE_CROSSCOMPILING TRUE)
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set(CMAKE_SYSROOT /toolchains/sdk/mips-linux-uclibc)
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set(CMAKE_C_COMPILER /toolchains/sdk/bin/mips-linux-gcc)
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set(CMAKE_CXX_COMPILER /toolchains/sdk/bin/mips-linux-g++)
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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set(OUTPUT_DIR ${PROJECT_SOURCE_DIR}/to_sd/)
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add_executable(stream ${SOURCE_FILES})
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include_directories(headers lib)
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target_link_libraries(stream -L${PROJECT_SOURCE_DIR}/lib/ -lrtsio -lopus -lrtsjpeg -lsbc -lasound -lrtsgeom -lrtstream -lrtsv4l2 -lrtscamkit -lh1encoder -lrtsosd -lrtsutils -lrtsosd2 -lrtsjpeg -lrtsisp -lrtsaec )
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=5281 -Wl,-rpath-link=${PROJECT_SOURCE_DIR}/lib/")
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set(CMAKE_VERBOSE_MAKEFILE FALSE)
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add_custom_command(
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TARGET stream
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PRE_BUILD
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COMMAND rm -Rf ${OUTPUT_DIR}
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COMMENT "Cleaning output directory"
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)
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# TODO: Fix the static building so the dynamic linking mess isn't required
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add_custom_command(
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TARGET stream
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POST_BUILD
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COMMENT "Copying libs and bins to output"
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COMMAND mkdir -p ${OUTPUT_DIR}
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COMMAND cp stream ${OUTPUT_DIR}/stream
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COMMAND cp -R ${PROJECT_SOURCE_DIR}/lib ${OUTPUT_DIR}/lib
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COMMAND rm -rf stream
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COMMENT "Fixing annoying dynamic linker issues"
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COMMAND mv ${OUTPUT_DIR}/lib/librtsio.so ${OUTPUT_DIR}/lib/librtsio.so.0
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COMMAND mv ${OUTPUT_DIR}/lib/librtsjpeg.so ${OUTPUT_DIR}/lib/librtsjpeg.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/librtsgeom.so ${OUTPUT_DIR}/lib/librtsgeom.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/librtstream.so ${OUTPUT_DIR}/lib/librtstream.so.2
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COMMAND mv ${OUTPUT_DIR}/lib/librtsv4l2.so ${OUTPUT_DIR}/lib/librtsv4l2.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/librtscamkit.so ${OUTPUT_DIR}/lib/librtscamkit.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/libh1encoder.so ${OUTPUT_DIR}/lib/libh1encoder.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/librtsosd.so ${OUTPUT_DIR}/lib/librtsosd.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/librtsutils.so ${OUTPUT_DIR}/lib/librtsutils.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/librtsosd2.so ${OUTPUT_DIR}/lib/librtsosd2.so.0
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COMMAND mv ${OUTPUT_DIR}/lib/librtsisp.so ${OUTPUT_DIR}/lib/librtsisp.so.1
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COMMAND mv ${OUTPUT_DIR}/lib/libasound.so ${OUTPUT_DIR}/lib/libasound.so.2
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COMMAND mv ${OUTPUT_DIR}/lib/libopus.so ${OUTPUT_DIR}/lib/libopus.so.0
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COMMAND mv ${OUTPUT_DIR}/lib/libsbc.so ${OUTPUT_DIR}/lib/libsbc.so.1
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COMMAND cp /toolchains/sdk/lib/libstdc++.so.6 ${OUTPUT_DIR}/lib/
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COMMAND cp /toolchains/sdk/lib/libatomic.so.1 ${OUTPUT_DIR}/lib/
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)

‎build/build.sh‎

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#!/bin/bash
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# /toolchains/sdk/activate
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rm -rf to_sd
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cd /to_build/
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rm -rf output
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mkdir output && cd output
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cmake ..
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make clean && make
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if [ $? -ne 0 ]; then
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echo "CMake reported an error, set CMAKE_VERBOSE_MAKEFILE to true and see the output"
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exit 1
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fi
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cd ..
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rm -rf output
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echo "Build stream grabber complete, compiling RTSPServer"
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# Activate the full build env
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source /toolchains/sdk/activate
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cd src/rRTSPServer
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./cleanup.rRTSPServer
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./init.rRTSPServer
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./compile.rRTSPServer
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if [ $? -ne 0 ]; then
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echo "Problem compiling RTSPServer"
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exit 1
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fi
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cp -R _install/bin/rRTSPServer /to_build/to_sd/
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echo "Grabber and RTSPServer compiled, creating payload for SD card"
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cd /to_build/sd_payload
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rm -rf Factory
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rm -rf /to_build/sd_payload/root
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git clone https://github.com/cjj25/yi-hack-telnet-root root
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if [ $? -ne 0 ]; then
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echo "Problem cloning the payload repo"
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exit 1
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fi
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cp -R root/Factory .
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cp *.conf *.sh Factory/
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chmod +x Factory/*
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mv Factory /to_build/to_sd/ && chmod +x /to_build/to_sd/
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cd /to_build/to_sd/
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tar cvzf /to_build/release/Yi-RTS3903N-RTSPServerV01.tar.gz .
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‎build/headers/AACEncoder_API.h‎

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#ifndef __AACENCODER_API_H__
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#define __AACENCODER_API_H__
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/* Create Encoder object */
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void *AACEncoder_API_context_Create();
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/* Encode process */
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int AACEncoder_API_Process(void *API,
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short *Input, char *Output, int InputLen);
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/* Free object */
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void AACEncoder_API_free(void *API);
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/* Set/Get parameter function */
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int AACEncoder_API_Set(void *API,
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void *pParameters, int size, unsigned int IDs);
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int AACEncoder_API_Get(void *API,
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void *pParameters, int size, unsigned int IDs);
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/* Get block length of I/O buffer */
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int AACEncoder_API_GetBlockLen(void *API);
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#endif /* __AACENCODER_API_H__ */

‎build/headers/AACEncoder_Parameters.h‎

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#ifndef _AACENCODER_PARAMETERS_
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#define _AACENCODER_PARAMETERS_
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/* ID = 0 => Set SampleRate and BitRate */
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typedef struct {
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int m_SampleRate;
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int m_BitRate;
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} AacEncoder_Para0;
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/* ID = 1 => Set channel number */
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typedef struct {
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int m_Channels;
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} AacEncoder_Para1;
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#endif

‎build/headers/AecNs_Parameters.h‎

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#ifndef _AECNS_PARAMETERS_
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#define _AECNS_PARAMETERS_
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// Note that NS will be enabled when AEC is enabled.
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// If both AEC and NS are disabled then the output will be the input mic signal
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// ID = 0 => Set AEC enable
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typedef struct
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{
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int Enable;
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} AecNs_Para0;
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// ID = 1 => Set NS enable
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typedef struct
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{
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int Enable;
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} AecNs_Para1;
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// ID = 2 => Set AEC input signal delay
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typedef struct
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{
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int SpkDelay;
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int MicDelay;
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} AecNs_Para2;
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// ID = 3 => Set AecNs bypass
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typedef struct
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{
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int Bypass_En;
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} AecNs_Para3;
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// ID = 4 => Set NS Suppression Level
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typedef struct
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{
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int Level;
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} AecNs_Para4;
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#endif

‎build/headers/RT_AecNs_API.h‎

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#ifndef _RT_AEC_NS_API_H_
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#define _RT_AEC_NS_API_H_
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/*
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Realtek AEC and NS spec:
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Speaker Number¡G1
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Microphone Number¡G1
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SampleRate¡G16000 Hz
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Process Block length¡G256 samples
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Input string must be "DeInterleaved". Interleaved string is not supported.
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I/O Data format is defined by AecNs_Resolution. It means the number of fractional bits.
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Output is mono signal string.
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*/
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#define AecNs_Resolution 24
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#define One_AecNs (long)(1<<AecNs_Resolution)
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/* Function for processing data. Where
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pMic is 1-dimensional deinterleaved microphone signal array.
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pSpk is 1-dimensional deinterleaved speaker signal array.
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pOut is 1-dimensional output signal array.
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*/
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// Create AecNs object and initial
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void* RTAecNs_API_context_Create(int fs);
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// Free all objects and buffers
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void RTAecNs_API_free(void* AecNsAPI);
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// Main process , return value is useless so far
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int RTAecNs_API_Process(void* AecNsAPI , long **pMic , long **pSpk , long *pOut);
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// Set/Get Aec and NS parameter , return value equals to -1 means Set/Get fail.
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// The IDs and parameter define can be found in AecNs_Parameters.h
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int RTAecNs_API_Set(void* AecNsAPI , void* pParameters , int size , unsigned int IDs);
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int RTAecNs_API_Get(void* AecNsAPI , void* pParameters , int size , unsigned int IDs);
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#endif

‎build/headers/basetype.h‎

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/*------------------------------------------------------------------------------
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-- --
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-- This software is confidential and proprietary and may be used --
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-- only as expressly authorized by a licensing agreement from --
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-- --
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-- Hantro Products Oy. --
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-- --
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-- (C) COPYRIGHT 2006 HANTRO PRODUCTS OY --
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-- ALL RIGHTS RESERVED --
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-- --
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-- The entire notice above must be reproduced --
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-- on all copies and should not be removed. --
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-- --
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--------------------------------------------------------------------------------
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--
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-- Description : Basic type definitions.
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--
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------------------------------------------------------------------------------*/
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#ifndef BASETYPE_H_INCLUDED
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#define BASETYPE_H_INCLUDED
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#include <stdint.h>
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#define VOLATILE volatile
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#ifdef __linux__ /* typedefs for Linux */
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#include <stddef.h> /* for size_t, NULL, etc. */
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typedef unsigned char u8;
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typedef signed char i8;
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typedef unsigned short u16;
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typedef signed short i16;
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typedef unsigned int u32;
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typedef signed int i32;
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typedef unsigned long long u64;
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typedef int64_t i64;
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typedef size_t ptr_t;
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#ifdef ADDRESS_WIDTH_64
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#define PRT_PTR "lx"
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#else
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#define PRT_PTR "x"
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#endif
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#ifndef __cplusplus
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typedef enum {
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false = 0,
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true = 1
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} bool;
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#endif
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#else /* __symbian__ or __win__ or whatever, customize it to suit well */
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#ifndef _SIZE_T_DEFINED
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typedef unsigned int size_t;
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#define _SIZE_T_DEFINED
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#endif
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#ifndef NULL
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#ifdef __cplusplus
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#define NULL 0
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#else /* */
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#define NULL ((void *)0)
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#endif /* */
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#endif
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typedef unsigned char u8;
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typedef signed char i8;
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typedef unsigned short u16;
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typedef signed short i16;
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typedef unsigned int u32;
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typedef signed int i32;
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typedef unsigned long long u64;
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typedef int64_t i64;
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#ifndef __cplusplus
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typedef enum {
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false = 0,
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true = 1
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} bool;
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#endif
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#endif
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#if defined(VC1SWDEC_16BIT) || defined(MP4ENC_ARM11)
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typedef unsigned short u16x;
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typedef signed short i16x;
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#else
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typedef unsigned int u16x;
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typedef signed int i16x;
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#endif
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#endif /* BASETYPE_H_INCLUDED */

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