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https://github.com/espressif/esp-idf.git
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Merge branch 'feature/usb_host_uvc_example_kconfig' into 'master'
feat(usb/host): add Kconfig for negotiation protocol configuration in UVC example Closes IDF-7975 See merge request espressif/esp-idf!26275
This commit is contained in:
Roman Leonov
commit
7b0b7a8bf0
@ -13,9 +13,9 @@ This example demonstrates how to:
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The example enumerates connected camera, negotiates selected resolution together with `FPS` and starts capturing video.
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`frame_callback` function is then invoked after receiving each frame. User can process received frame according to his needs.
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Optionally, captured video can be visualized on computer with help of `player.py` script located in this example.
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Optionally, captured video can be visualized on computer with help of `player.py` script located in this example.
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After setting `Enable streaming` menuconfig option, example will create TCP server upon start, and wait until `player.py` connects to server.
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Once connection is established, example streams each received frame to computer for visualization.
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Once connection is established, example streams each received frame to computer for visualization.
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**Notice** that `libuvc` selects highest possible `dwMaxPayloadTransferSize` by default, so example has to manually overwrite this value to 512 bytes (maximum transfer size supported by ESP32-S2/S3).
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@ -32,7 +32,7 @@ This example requires any ESP32-S2 or ESP32-S3 with external PSRAM and exposed U
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Following configuration is needed for streaming video:
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Open the project configuration menu (`idf.py menuconfig`).
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Open the project configuration menu (`idf.py menuconfig`).
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In the `Example Connection Configuration` menu:
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@ -45,6 +45,10 @@ In the `Example Configuration` menu:
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* Set the Example configuration
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* `Enable streaming`
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* Select one of UVC Protocol Mode
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* `Auto`
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* `Custom`
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Optional: If you need, change the other options according to your requirements.
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Additionally, `player.py` python script makes use of `opencv-python` and `numpy` packages,
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@ -52,11 +56,31 @@ not included in `idf-env` environment. Run following commands to install:
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* `pip install opencv-python`
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* `pip install numpy`
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#### UVC Protocol Mode: Auto
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When protocol mode set to Auto, the example tries to make three attempts to negotiatiate
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the protocol with following parameters:
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1 Attempt: 640x480, 15 FPS, MJPEG
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2 Attempt: 320x240, 30 FPS, MJPEG
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3 Attempt: 320x240, first available FPS, MJPEG
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If all three attempts result in an error, the example displays the error message and
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suggests to try another USB UVC Device.
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#### UVC Protocol Mode: Custom
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When protocol mode set to Custom, the example tries to negotiate protocol with
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configured parameters: Attempts, Width, Heighs, FPS, Frame Coding format.
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After all attemts result in an error, the example displays the error message and
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suggests to try another USB UVC Device.
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### Build and Flash
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Build the project and flash it to the board, then run the monitor tool to view the serial output:
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Run `idf.py set-target esp32s2` to set target chip.
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Run `idf.py set-target esp32s2` to set target chip.
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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@ -66,7 +90,7 @@ See the Getting Started Guide for all the steps to configure and use the ESP-IDF
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## Known limitations
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Having only Full Speed USB peripheral and hardware limited MPS (maximum packet size) to 512 bytes, ESP32-S2/S3 is capable of reading about 0.5 MB of data per second. When connected to Full Speed USB host, cameras normally provide resolution no larger than 640x480 pixels.
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Having only Full Speed USB peripheral and hardware limited MPS (maximum packet size) to 512 bytes, ESP32-S2/S3 is capable of reading about 0.5 MB of data per second. When connected to Full Speed USB host, cameras normally provide resolution no larger than 640x480 pixels.
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Following two supported formats are the most common (both encoded in MJPEG):
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* 320x240 30 FPS
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* 640x480 15 FPS
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@ -79,121 +103,115 @@ Following two supported formats are the most common (both encoded in MJPEG):
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```
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...
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Waiting for device
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Device found
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DEVICE CONFIGURATION (0c45:6340/ S) ---
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I (1186) example: Waiting for USB UVC device connection ...
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I (1606) example: Device found
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DEVICE CONFIGURATION (0c45:6340/ S) ---
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Status: idle
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VideoControl:
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bcdUVC: 0x0100
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bcdUVC: 0x0100
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VideoStreaming(1):
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bEndpointAddress: 129
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Formats:
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MJPEGFormat(1)
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bits per pixel: 0
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GUID: 4d4a5047000000000000000000000000 (MJPG)
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default frame: 1
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aspect ratio: 0x0
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interlace flags: 00
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copy protect: 00
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FrameDescriptor(1)
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capabilities: 00
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size: 640x480
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bit rate: 24576000-147456000
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max frame size: 614400
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(2)
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capabilities: 00
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size: 352x288
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bit rate: 8110080-48660480
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max frame size: 202752
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(3)
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capabilities: 00
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size: 320x240
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bit rate: 6144000-36864000
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max frame size: 153600
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(4)
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capabilities: 00
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size: 176x144
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bit rate: 2027520-12165120
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max frame size: 50688
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(5)
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capabilities: 00
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size: 160x120
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bit rate: 1536000-9216000
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max frame size: 38400
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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StillFrameDescriptor
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bEndPointAddress: 00
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wWidth(1) = 640
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wHeight(1) = 480
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wWidth(2) = 352
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wHeight(2) = 288
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wWidth(3) = 320
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wHeight(3) = 240
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wWidth(4) = 176
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wHeight(4) = 144
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wWidth(5) = 160
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wHeight(5) = 120
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bEndpointAddress: 129
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Formats:
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MJPEGFormat(1)
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bits per pixel: 0
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GUID: 4d4a5047000000000000000000000000 (MJPG)
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default frame: 1
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aspect ratio: 0x0
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interlace flags: 00
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copy protect: 00
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FrameDescriptor(1)
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capabilities: 00
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size: 640x480
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bit rate: 24576000-147456000
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max frame size: 614400
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(2)
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capabilities: 00
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size: 352x288
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bit rate: 8110080-48660480
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max frame size: 202752
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(3)
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capabilities: 00
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size: 320x240
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bit rate: 6144000-36864000
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max frame size: 153600
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(4)
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capabilities: 00
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size: 176x144
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bit rate: 2027520-12165120
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max frame size: 50688
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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FrameDescriptor(5)
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capabilities: 00
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size: 160x120
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bit rate: 1536000-9216000
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max frame size: 38400
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default interval: 1/30
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interval[0]: 1/30
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interval[1]: 1/25
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interval[2]: 1/20
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interval[3]: 1/15
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interval[4]: 1/10
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interval[5]: 1/5
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StillFrameDescriptor
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bEndPointAddress: 00
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wWidth(1) = 640
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wHeight(1) = 480
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wWidth(2) = 352
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wHeight(2) = 288
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wWidth(3) = 320
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wHeight(3) = 240
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wWidth(4) = 176
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wHeight(4) = 144
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wWidth(5) = 160
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wHeight(5) = 120
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END DEVICE CONFIGURATION
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I (1796) example: Negotiate streaming profile 640x480, fps 15 ...
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I (1816) example: Negotiation complete.
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bmHint: 0001
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bFormatIndex: 1
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bFrameIndex: 3
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dwFrameInterval: 333333
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bFrameIndex: 1
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dwFrameInterval: 666666
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wKeyFrameRate: 0
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wPFrameRate: 0
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wCompQuality: 0
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wCompWindowSize: 0
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wDelay: 20905
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dwMaxVideoFrameSize: 153600
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wDelay: 23469
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dwMaxVideoFrameSize: 614400
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dwMaxPayloadTransferSize: 512
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bInterfaceNumber: 1
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Streaming...
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I (4801) example: fps: 35, bytes per second: 170480
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I (5821) example: fps: 34, bytes per second: 172448
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I (6841) example: fps: 34, bytes per second: 172448
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I (7871) example: fps: 34, bytes per second: 172448
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I (8891) example: fps: 34, bytes per second: 172448
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I (9921) example: fps: 35, bytes per second: 177520
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I (10941) example: fps: 34, bytes per second: 172448
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I (11961) example: fps: 34, bytes per second: 172448
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I (12991) example: fps: 34, bytes per second: 172448
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I (14011) example: fps: 34, bytes per second: 172448
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I (15041) example: fps: 34, bytes per second: 172448
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I (16061) example: fps: 34, bytes per second: 172448
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I (17081) example: fps: 34, bytes per second: 172448
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Done streaming.
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UVC exited
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I (1836) example: Streaming...
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I (4016) example: fps: 10, bytes per second: 69920
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...
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I (44916) example: fps: 9, bytes per second: 62928
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E (45626) USBH: Device 1 gone
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I (45636) example: Done streaming.
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```
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@ -3,5 +3,104 @@ menu "Example Configuration"
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bool "Enable streaming"
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default n
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help
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Enables streaming of captured video
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Enables streaming of captured video.
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choice EXAMPLE_UVC_PROTOCOL_MODE
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prompt "UVC Protocol mode"
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default EXAMPLE_UVC_PROTOCOL_MODE_AUTO
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config EXAMPLE_UVC_PROTOCOL_MODE_AUTO
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bool "Auto"
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help
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When protocol mode set to Auto, the example tries to make three attempts to negotiatiate
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the protocol with following parameters:
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1 Attempt: 640x480, 15 FPS, MJPEG
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2 Attempt: 320x240, 30 FPS, MJPEG
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3 Attempt: 320x240, first available FPS, MJPEG
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If all three attempts result in an error, the example displays the error message and
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suggests to try another USB UVC Device.
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config EXAMPLE_UVC_PROTOCOL_MODE_CUSTOM
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bool "Custom"
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help
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When protocol mode set to Custom, the example tries to negotiate protocol with
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configured parameters: Attempts, Width, Heighs, FPS, Frame Coding format.
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After all attemts result in an error, the example displays the error message and
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suggests to try another USB UVC Device.
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endchoice
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menu "UVC Protocol parameters"
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depends on EXAMPLE_UVC_PROTOCOL_MODE_CUSTOM
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config EXAMPLE_NEGOTIATION_ATTEMPTS
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int "Attempts"
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default 3
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help
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Number of attempts to negotiate custom protocol parameters.
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config EXAMPLE_WIDTH_PARAM
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int "Width resolution in pixels"
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default 320
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help
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Configure the negotiation width parameter during UVC device stream getting.
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config EXAMPLE_HEIGHT_PARAM
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int "Heigth resolution in pixels"
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default 240
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help
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Configure the negotiation height parameter during UVC device stream getting.
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config EXAMPLE_FPS_PARAM
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int "FPS"
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default 30
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help
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Configure the negotiation FPS parameter during UVC device stream getting.
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Can be any value, available from the Frame Descriptor of the UVC device.
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When 0 - negotiation accept the first rate available.
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choice EXAMPLE_NEGOTIATION_FORMAT
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prompt "Frame coding format of the stream, transport-independent"
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default UVC_FRAME_FORMAT_MJPEG
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help
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Configure the negotiation frame coding of stream.
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config UVC_FRAME_FORMAT_UNKNOWN
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bool "Unknown"
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config UVC_FRAME_FORMAT_UNCOMPRESSED
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bool "Uncompressed"
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config UVC_FRAME_FORMAT_COMPRESSED
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bool "Compressed"
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config UVC_FRAME_FORMAT_YUYV
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bool "YUYV"
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config UVC_FRAME_FORMAT_UYVY
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bool "UYVY"
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config UVC_FRAME_FORMAT_RGB
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bool "RGB"
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config UVC_FRAME_FORMAT_BGR
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bool "BGR"
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config UVC_FRAME_FORMAT_MJPEG
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bool "MJPEG"
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config UVC_FRAME_FORMAT_GRAY8
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bool "GRAY8"
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config UVC_FRAME_FORMAT_GRAY16
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bool "GRAY16"
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config UVC_FRAME_FORMAT_NV12
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bool "NV12"
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endchoice
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config EXAMPLE_FORMAT_PARAM
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int
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default 0 if UVC_FRAME_FORMAT_UNKNOWN
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default 1 if UVC_FRAME_FORMAT_UNCOMPRESSED
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default 2 if UVC_FRAME_FORMAT_COMPRESSED
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default 3 if UVC_FRAME_FORMAT_YUYV
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default 4 if UVC_FRAME_FORMAT_UYVY
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default 5 if UVC_FRAME_FORMAT_RGB
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default 6 if UVC_FRAME_FORMAT_BGR
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default 7 if UVC_FRAME_FORMAT_MJPEG
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default 9 if UVC_FRAME_FORMAT_GRAY8
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default 10 if UVC_FRAME_FORMAT_GRAY16
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default 17 if UVC_FRAME_FORMAT_NV12
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endmenu
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endmenu
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@ -24,10 +24,29 @@ static const char *TAG = "example";
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#define USB_DISCONNECT_PIN GPIO_NUM_0
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|
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#define FPS 30
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#define WIDTH 320
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#define HEIGHT 240
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#define FORMAT UVC_COLOR_FORMAT_MJPEG // UVC_COLOR_FORMAT_YUYV
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#if (CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_AUTO)
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#define EXAMPLE_UVC_PROTOCOL_AUTO_COUNT 3
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typedef struct {
|
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enum uvc_frame_format format;
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int width;
|
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int height;
|
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int fps;
|
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const char* name;
|
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} uvc_stream_profile_t;
|
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|
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uvc_stream_profile_t uvc_stream_profiles[EXAMPLE_UVC_PROTOCOL_AUTO_COUNT] = {
|
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{UVC_FRAME_FORMAT_MJPEG, 640, 480, 15, "640x480, fps 15"},
|
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{UVC_FRAME_FORMAT_MJPEG, 320, 240, 30, "320x240, fps 30"},
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{UVC_FRAME_FORMAT_MJPEG, 320, 240, 0, "320x240, any fps"}
|
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};
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#endif // CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_AUTO
|
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|
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#if (CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_CUSTOM)
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#define FPS CONFIG_EXAMPLE_FPS_PARAM
|
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#define WIDTH CONFIG_EXAMPLE_WIDTH_PARAM
|
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#define HEIGHT CONFIG_EXAMPLE_HEIGHT_PARAM
|
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#define FORMAT CONFIG_EXAMPLE_FORMAT_PARAM
|
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#endif // CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_CUSTOM
|
||||
|
||||
// Attached camera can be filtered out based on (non-zero value of) PID, VID, SERIAL_NUMBER
|
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#define PID 0
|
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@ -147,13 +166,57 @@ static EventBits_t wait_for_event(EventBits_t event)
|
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return xEventGroupWaitBits(app_flags, event, pdTRUE, pdFALSE, portMAX_DELAY) & event;
|
||||
}
|
||||
|
||||
static uvc_error_t uvc_negotiate_stream_profile(uvc_device_handle_t *devh,
|
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uvc_stream_ctrl_t *ctrl)
|
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{
|
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uvc_error_t res;
|
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#if (CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_AUTO)
|
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for (int idx = 0; idx < EXAMPLE_UVC_PROTOCOL_AUTO_COUNT; idx++) {
|
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ESP_LOGI(TAG, "Negotiate streaming profile %s ...", uvc_stream_profiles[idx].name);
|
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res = uvc_get_stream_ctrl_format_size(devh,
|
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ctrl,
|
||||
uvc_stream_profiles[idx].format,
|
||||
uvc_stream_profiles[idx].width,
|
||||
uvc_stream_profiles[idx].height,
|
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uvc_stream_profiles[idx].fps);
|
||||
|
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if (UVC_SUCCESS == res) {
|
||||
break; // stream profile negotiated
|
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}
|
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sleep(1);
|
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ESP_LOGE(TAG, "Negotiation failed with error %d.", res);
|
||||
}
|
||||
#endif // CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_AUTO
|
||||
|
||||
#if (CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_CUSTOM)
|
||||
int attempt = CONFIG_EXAMPLE_NEGOTIATION_ATTEMPTS;
|
||||
while (attempt--) {
|
||||
ESP_LOGI(TAG, "Negotiate streaming profile %dx%d, %d fps ...", WIDTH, HEIGHT, FPS);
|
||||
res = uvc_get_stream_ctrl_format_size(devh, ctrl, FORMAT, WIDTH, HEIGHT, FPS);
|
||||
if (UVC_SUCCESS == res) {
|
||||
break;
|
||||
}
|
||||
sleep(1);
|
||||
|
||||
ESP_LOGE(TAG, "Negotiation failed. Try again (%d) ...", attempt);
|
||||
}
|
||||
#endif // CONFIG_EXAMPLE_UVC_PROTOCOL_MODE_CUSTOM
|
||||
|
||||
if (UVC_SUCCESS == res) {
|
||||
ESP_LOGI(TAG, "Negotiation complete.");
|
||||
} else {
|
||||
ESP_LOGE(TAG, "Try another UVC USB device of change negotiation parameters.");
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
int app_main(int argc, char **argv)
|
||||
{
|
||||
uvc_context_t *ctx;
|
||||
uvc_device_t *dev;
|
||||
uvc_device_handle_t *devh;
|
||||
uvc_stream_ctrl_t ctrl;
|
||||
uvc_error_t res;
|
||||
|
||||
app_flags = xEventGroupCreate();
|
||||
assert(app_flags);
|
||||
@ -183,12 +246,13 @@ int app_main(int argc, char **argv)
|
||||
|
||||
do {
|
||||
|
||||
printf("Waiting for device\n");
|
||||
ESP_LOGI(TAG, "Waiting for USB UVC device connection ...");
|
||||
wait_for_event(UVC_DEVICE_CONNECTED);
|
||||
|
||||
UVC_CHECK(uvc_find_device(ctx, &dev, PID, VID, SERIAL_NUMBER));
|
||||
puts("Device found");
|
||||
ESP_LOGI(TAG, "Device found");
|
||||
|
||||
// UVC Device open
|
||||
UVC_CHECK(uvc_open(dev, &devh));
|
||||
|
||||
// Uncomment to print configuration descriptor
|
||||
@ -198,37 +262,32 @@ int app_main(int argc, char **argv)
|
||||
|
||||
// Print known device information
|
||||
uvc_print_diag(devh, stderr);
|
||||
|
||||
// Negotiate stream profile
|
||||
res = uvc_get_stream_ctrl_format_size(devh, &ctrl, FORMAT, WIDTH, HEIGHT, FPS);
|
||||
while (res != UVC_SUCCESS) {
|
||||
printf("Negotiating streaming format failed, trying again...\n");
|
||||
res = uvc_get_stream_ctrl_format_size(devh, &ctrl, FORMAT, WIDTH, HEIGHT, FPS);
|
||||
sleep(1);
|
||||
if (UVC_SUCCESS == uvc_negotiate_stream_profile(devh, &ctrl)) {
|
||||
// dwMaxPayloadTransferSize has to be overwritten to MPS (maximum packet size)
|
||||
// supported by ESP32-S2(S3), as libuvc selects the highest possible MPS by default.
|
||||
ctrl.dwMaxPayloadTransferSize = 512;
|
||||
|
||||
uvc_print_stream_ctrl(&ctrl, stderr);
|
||||
|
||||
UVC_CHECK(uvc_start_streaming(devh, &ctrl, frame_callback, NULL, 0));
|
||||
ESP_LOGI(TAG, "Streaming...");
|
||||
|
||||
wait_for_event(UVC_DEVICE_DISCONNECTED);
|
||||
|
||||
uvc_stop_streaming(devh);
|
||||
ESP_LOGI(TAG, "Done streaming.");
|
||||
} else {
|
||||
wait_for_event(UVC_DEVICE_DISCONNECTED);
|
||||
}
|
||||
|
||||
// dwMaxPayloadTransferSize has to be overwritten to MPS (maximum packet size)
|
||||
// supported by ESP32-S2(S3), as libuvc selects the highest possible MPS by default.
|
||||
ctrl.dwMaxPayloadTransferSize = 512;
|
||||
|
||||
uvc_print_stream_ctrl(&ctrl, stderr);
|
||||
|
||||
UVC_CHECK(uvc_start_streaming(devh, &ctrl, frame_callback, NULL, 0));
|
||||
puts("Streaming...");
|
||||
|
||||
wait_for_event(UVC_DEVICE_DISCONNECTED);
|
||||
|
||||
uvc_stop_streaming(devh);
|
||||
puts("Done streaming.");
|
||||
|
||||
// UVC Device close
|
||||
uvc_close(devh);
|
||||
|
||||
} while (gpio_get_level(USB_DISCONNECT_PIN) != 0);
|
||||
|
||||
tcp_server_close_when_done();
|
||||
|
||||
uvc_exit(ctx);
|
||||
puts("UVC exited");
|
||||
ESP_LOGI(TAG, "UVC exited");
|
||||
|
||||
uninitialize_usb_host_lib();
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user