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some cleanup

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Illusion
2024-06-19 20:50:08 +02:00
parent c7a634eeb3
commit da4c4c3651
2 changed files with 62 additions and 197 deletions
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examples/buffered/main.odin
+62 -131
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@@ -44,146 +44,77 @@ main :: proc() {
fmt.println(flac_data)
alsa_err = alsa.pcm_set_params(handle, .S16_LE, .RW_INTERLEAVED, u32(flac_data.metadata.channels), flac_data.metadata.sample_rate, 1, 500000)
if alsa_err < 0 {
fmt.eprintln("Playback open error:", alsa.strerror(alsa_err))
os.exit(1)
}
//alsa_err = alsa.pcm_set_params(handle, .S16_LE, .RW_INTERLEAVED, u32(flac_data.metadata.channels), flac_data.metadata.sample_rate, 1, 500000)
//if alsa_err < 0 {
// fmt.eprintln("Playback open error:", alsa.strerror(alsa_err))
// os.exit(1)
//}
sample_rate := flac_data.metadata.sample_rate
channels := flac_data.metadata.channels
//sample_rate := flac_data.metadata.sample_rate
//channels := flac_data.metadata.channels
//md5_ctx: md5.Context
//md5.init(&md5_ctx)
for {
frame, err := flac.read_next_frame(reader, flac_data)
////md5_ctx: md5.Context
////md5.init(&md5_ctx)
//for {
// frame, err := flac.read_next_frame(reader, flac_data)
defer delete(frame.samples)
if err != nil {
if err == .EOF {
break
} else {
fmt.println("Error while decoding frame:", err)
os.exit(1)
}
}
// defer delete(frame.samples)
// if err != nil {
// if err == .EOF {
// break
// } else {
// fmt.println("Error while decoding frame:", err)
// os.exit(1)
// }
// }
//if frame.sample_rate != sample_rate || frame.channels != channels {
// sample_rate = frame.sample_rate
// channels = frame.channels
// alsa_err = alsa.pcm_set_params(handle, .S16_LE, .RW_INTERLEAVED, u32(channels), sample_rate, 1, 0)
// if alsa_err < 0 {
// fmt.eprintln("Playback open error:", alsa.strerror(alsa_err))
// os.exit(1)
// }
//}
// //if frame.sample_rate != sample_rate || frame.channels != channels {
// // sample_rate = frame.sample_rate
// // channels = frame.channels
// // alsa_err = alsa.pcm_set_params(handle, .S16_LE, .RW_INTERLEAVED, u32(channels), sample_rate, 1, 0)
// // if alsa_err < 0 {
// // fmt.eprintln("Playback open error:", alsa.strerror(alsa_err))
// // os.exit(1)
// // }
// //}
//converted_samples := make([]u8, len(samples))
//defer delete(converted_samples)
//for sample, i in samples {
// converted_samples[i] = u8(sample & 0xFF)
//}
// //converted_samples := make([]u8, len(samples))
// //defer delete(converted_samples)
// //for sample, i in samples {
// // converted_samples[i] = u8(sample & 0xFF)
// //}
converted_samples := make([]i16, len(frame.samples))
defer delete(converted_samples)
for sample, i in frame.samples {
new_sample := sample & 0xFF
new_sample |= ((sample >> 8) & 0xFF) << 8
converted_samples[i] = i16(new_sample)
}
// converted_samples := make([]i16, len(frame.samples))
// defer delete(converted_samples)
// for sample, i in frame.samples {
// new_sample := sample & 0xFF
// new_sample |= ((sample >> 8) & 0xFF) << 8
// converted_samples[i] = i16(new_sample)
// }
frames := alsa.pcm_writei(handle, raw_data(converted_samples), u64(len(frame.samples)) / u64(frame.channels))
if frames < 0 {
fmt.eprintln("Error writing to PCM device:", alsa.strerror(auto_cast frames))
break
}
fmt.printfln("Played %d frames", frames)
// frames := alsa.pcm_writei(handle, raw_data(converted_samples), u64(len(frame.samples)) / u64(frame.channels))
// if frames < 0 {
// fmt.eprintln("Error writing to PCM device:", alsa.strerror(auto_cast frames))
// break
// }
// fmt.printfln("Played %d frames", frames)
//flac.md5hash(&md5_ctx, flac_data.metadata.bits_per_sample, samples)
}
end := time.now()
//err = flac.md5sum(&md5_ctx, flac_data)
//if err == .MD5_Mismatch {
// fmt.println("Decoded audio data is not correct.")
// os.exit(1)
// //flac.md5hash(&md5_ctx, flac_data.metadata.bits_per_sample, samples)
//}
//end := time.now()
alsa_err = alsa.pcm_drain(handle)
if alsa_err < 0 {
fmt.eprintln("pcm_drain failed with:", alsa.strerror(alsa_err))
}
alsa.pcm_close(handle)
////err = flac.md5sum(&md5_ctx, flac_data)
////if err == .MD5_Mismatch {
//// fmt.println("Decoded audio data is not correct.")
//// os.exit(1)
////}
elapsed := time.diff(start, end)
fmt.println("Decoding took", elapsed)
}
old_main :: proc() {
if len(os.args) < 2 {
fmt.eprintln("Please provide a path to a flac file.")
os.exit(1)
}
handle: ^alsa.pcm_t
arena: virtual.Arena
arena_err := virtual.arena_init_growing(&arena, mem.Megabyte * 8)
if arena_err != nil {
fmt.eprintln("Failed to alloc memory")
return
}
allocator := virtual.arena_allocator(&arena)
alsa_err := alsa.pcm_open(&handle, DEVICE, .PLAYBACK, .BLOCK)
if alsa_err < 0 {
fmt.eprintln("Failed to initialize audio device: ", alsa.strerror(alsa_err))
os.exit(1)
}
start := time.now()
flac_data, err := flac.load_from_file(os.args[1], allocator = allocator)
if err != nil {
fmt.eprintln(err)
if err == .MD5_Mismatch {
fmt.printfln("Expected: %v, got: %v", flac_data.metadata.expected_md5, flac_data.metadata.calculated_md5)
}
os.exit(1)
}
defer flac.destroy(flac_data, allocator = allocator)
end := time.now()
fmt.println(flac_data.metadata)
alsa_err = alsa.pcm_set_params(handle, .S16_LE, .RW_INTERLEAVED, u32(flac_data.metadata.channels), flac_data.metadata.sample_rate, 1, 500000)
if alsa_err < 0 {
fmt.eprintln("Playback open error:", alsa.strerror(alsa_err))
os.exit(1)
}
converted_samples := make([]i16, len(flac_data.samples))
for sample, i in flac_data.samples {
new_sample := sample & 0xFF
new_sample |= ((sample >> 8) & 0xFF) << 8
converted_samples[i] = i16(new_sample)
}
for {
frames := alsa.pcm_writei(handle, raw_data(converted_samples), u64(len(flac_data.samples)) / u64(flac_data.metadata.channels))
if frames < 0 {
fmt.eprintln("Error writing to PCM device:", alsa.strerror(auto_cast frames))
break
}
fmt.printfln("Played %d frames", frames)
}
alsa_err = alsa.pcm_drain(handle)
if alsa_err < 0 {
fmt.eprintln("pcm_drain failed with:", alsa.strerror(alsa_err))
}
alsa.pcm_close(handle)
elapsed := time.diff(start, end)
fmt.println("Decoding took", elapsed)
//alsa_err = alsa.pcm_drain(handle)
//if alsa_err < 0 {
// fmt.eprintln("pcm_drain failed with:", alsa.strerror(alsa_err))
//}
//alsa.pcm_close(handle)
//elapsed := time.diff(start, end)
//fmt.println("Decoding took", elapsed)
}