rpi camera: update font and link it to IBM repository

.dockerignore

@@ -4,5 +4,5 @@
 /coverage*.txt
 /apidocs/*.html
 /internal/servers/hls/hls.min.js
-/internal/protocols/rpicamera/exe/text_font.h
+/internal/protocols/rpicamera/exe/text_font.*
 /internal/protocols/rpicamera/exe/exe

.gitignore

@@ -3,5 +3,5 @@
 /coverage*.txt
 /apidocs/*.html
 /internal/servers/hls/hls.min.js
-/internal/protocols/rpicamera/exe/text_font.h
+/internal/protocols/rpicamera/exe/text_font.*
 /internal/protocols/rpicamera/exe/exe

README.md

@@ -472,7 +472,7 @@ The resulting stream will be available in path `/cam`.
 
 _MediaMTX_ natively supports the Raspberry Pi Camera, enabling high-quality and low-latency video streaming from the camera to any user, for any purpose. There are a couple of requirements:
 
-1. The server must run on a Raspberry Pi, with Raspberry Pi OS bullseye or newer as operative system. Both 32 bit and 64 bit operative systems are supported.
+1. The server must run on a Raspberry Pi, with Raspberry Pi OS Bullseye as operative system. Both 32 bit and 64 bit architectures are supported.
 
 2. Make sure that the legacy camera stack is disabled. Type `sudo raspi-config`, then go to `Interfacing options`, `enable/disable legacy camera support`, choose `no`. Reboot the system.
 

internal/protocols/rpicamera/exe/Makefile

@@ -36,6 +36,14 @@ OBJS = \
 
 all: exe
 
+TEXT_FONT_URL = https://github.com/IBM/plex/raw/v6.4.2/IBM-Plex-Mono/fonts/complete/ttf/IBMPlexMono-Medium.ttf
+TEXT_FONT_SHA256 = 0bede3debdea8488bbb927f8f0650d915073209734a67fe8cd5a3320b572511c
+
+text_font.ttf:
+	wget -O text_font.tmp $(TEXT_FONT_URL)
+	H=$$(sha256sum text_font.tmp | awk '{ print $$1 }'); [ "$$H" = "$(TEXT_FONT_SHA256)" ] || { echo "hash mismatch; got $$H, expected $(TEXT_FONT_SHA256)"; exit 1; }
+	mv text_font.tmp $@
+
 text_font.h: text_font.ttf
 	xxd --include $< > text_font.h
 

scripts/binaries.mk

@@ -3,14 +3,14 @@ BINARY_NAME = mediamtx
 define DOCKERFILE_BINARIES
 FROM $(RPI32_IMAGE) AS rpicamera32
 RUN ["cross-build-start"]
-RUN apt update && apt install -y --no-install-recommends g++ pkg-config make libcamera-dev libfreetype-dev xxd
+RUN apt update && apt install -y --no-install-recommends g++ pkg-config make libcamera-dev libfreetype-dev xxd wget
 WORKDIR /s/internal/protocols/rpicamera/exe
 COPY internal/protocols/rpicamera/exe .
 RUN make -j$$(nproc)
 
 FROM $(RPI64_IMAGE) AS rpicamera64
 RUN ["cross-build-start"]
-RUN apt update && apt install -y --no-install-recommends g++ pkg-config make libcamera-dev libfreetype-dev xxd
+RUN apt update && apt install -y --no-install-recommends g++ pkg-config make libcamera-dev libfreetype-dev xxd wget
 WORKDIR /s/internal/protocols/rpicamera/exe
 COPY internal/protocols/rpicamera/exe .
 RUN make -j$$(nproc)