mplay

commit 88245add6512f3b9a56d1da40a7dcba2fcd97fed
Author: Louis Burda <quent.burda@gmail.com>
Date:   Mon, 19 Sep 2022 19:53:46 +0200

Initial version

Diffstat:
A
.gitignore
 | 
2
++
A
.gitmodules
 | 
3
+++
A
Makefile
 | 
19
+++++++++++++++++++
A
compile_commands.json
 | 
19
+++++++++++++++++++
A
lib/minimp3
 | 
1
+
A
src/main.c
 | 
88
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

6 files changed, 132 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,2 @@
+.cache
+build/mplay
diff --git a/.gitmodules b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/minimp3"]
+	path = lib/minimp3
+	url = git@github.com:lieff/minimp3.git
diff --git a/Makefile b/Makefile
@@ -0,0 +1,19 @@
+CFLAGS = -g -I src -I lib/minimp3/
+LDLIBS = 
+
+.PHONY: all clean
+
+all: build/mplay
+
+clean:
+	rm -rf build
+
+build:
+	mkdir build
+
+build/%.o: src/%.c src/%.h | build
+	$(CC) -o $@ -c $< $(CFLAGS) $(LDLIBS)
+
+build/mplay: src/main.c | build
+	$(CC) -o $@ $^ $(CFLAGS) $(LDLIBS)
+
diff --git a/compile_commands.json b/compile_commands.json
@@ -0,0 +1,18 @@
+[
+    {
+        "arguments": [
+            "cc",
+            "-c",
+            "-g",
+            "-I",
+            "src",
+            "-I",
+            "lib/minimp3/",
+            "-o",
+            "build/mplay",
+            "src/main.c"
+        ],
+        "directory": "/snxdata/lib/dev/mplay",
+        "file": "src/main.c"
+    }
+]
+\ No newline at end of file
diff --git a/lib/minimp3 b/lib/minimp3
@@ -0,0 +1 @@
+Subproject commit afb604c06bc8beb145fecd42c0ceb5bda8795144
diff --git a/src/main.c b/src/main.c
@@ -0,0 +1,88 @@
+#define MINIMP3_IMPLEMENTATION
+#include "minimp3.h"
+#include "pulse/error.h"
+#include "pulse/simple.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static uint8_t *read_file(const char *filename, size_t *len);
+static void play_file(const char *filename);
+static void daemon(void);
+
+uint8_t *
+read_file(const char *filename, size_t *len)
+{
+	FILE *f;
+	uint8_t *buf;
+	size_t start;
+
+	f = fopen(filename, "r");
+	if (f == NULL)
+		ERROR("Failed to open file\n");
+
+	fseek(f, 0, SEEK_END);
+	*len = ftell(f) - start;
+
+	buf = malloc(*len);
+	OOM_CHECK(buf);
+
+	fseek(f, 0, SEEK_SET);
+	if (fread(buf, 1, *len, f) != len)
+		ERROR("Failed to read file contents\n");
+
+	fclose(f);
+
+	return buf;
+}
+
+void
+play_file(const char *filename)
+{
+	static const pa_sample_spec spec = {
+		.format = PA_SAMPLE_S16LE,
+		.rate = 44100,
+		.channels = 2
+	};
+	mp3dec_frame_info_t info;
+	mp3d_sample_t sample;
+	mp3dec_t dec;
+	pa_simple *stream;
+	uint8_t *data;
+	size_t len;
+	int status, ret;
+
+	data = read_file(filename, &len);
+
+	mp3dec_init(&dec);
+
+	stream = pa_simple_new(NULL, "MPLAY", PA_STREAM_PLAYBACK, NULL,
+		"playback", &spec, NULL, NULL, &status);
+	// check status
+
+	while (mp3dec_decode_frame(&dec, data, len, &sample, &info)) {
+		pa_simple_write();
+	}
+
+	ret = pa_simple_drain(stream, &status);
+	if (!ret) ERROR("Failed to drain rest of audio\n");
+
+	pa_simple_free(stream);
+}
+
+void
+daemon(void)
+{
+	
+}
+
+int
+main(int argc, const char **argv)
+{
+	if (argc != 2)
+		ERROR("USAGE: mplay FILE\n");
+
+	play_file(argv[1]);
+}