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decoder/audiofile: make variables more local

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This commit is contained in:
Max Kellermann 2014-07-10 09:26:12 +02:00
parent 107321e385
commit 49b63e084f
1 changed files with 24 additions and 28 deletions
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52
src/decoder/plugins/AudiofileDecoderPlugin.cxx
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@ -34,9 +34,6 @@
#include <assert.h>
#include <stdio.h>
/* pick 1020 since its devisible for 8,16,24, and 32-bit audio */
#define CHUNK_SIZE 1020
static constexpr Domain audiofile_domain("audiofile");
struct AudioFileInputStream {
@ -172,69 +169,68 @@ audiofile_setup_sample_format(AFfilehandle af_fp)
static void
audiofile_stream_decode(Decoder &decoder, InputStream &is)
{
AFvirtualfile *vf;
int fs;
AFfilehandle af_fp;
AudioFormat audio_format;
uint16_t bit_rate;
int ret;
char chunk[CHUNK_SIZE];
if (!is.IsSeekable()) {
LogWarning(audiofile_domain, "not seekable");
return;
}
AudioFileInputStream afis{&decoder, is};
vf = setup_virtual_fops(afis);
AFvirtualfile *const vf = setup_virtual_fops(afis);
af_fp = afOpenVirtualFile(vf, "r", nullptr);
if (af_fp == AF_NULL_FILEHANDLE) {
const AFfilehandle fh = afOpenVirtualFile(vf, "r", nullptr);
if (fh == AF_NULL_FILEHANDLE) {
LogWarning(audiofile_domain, "failed to input stream");
return;
}
Error error;
AudioFormat audio_format;
if (!audio_format_init_checked(audio_format,
afGetRate(af_fp, AF_DEFAULT_TRACK),
audiofile_setup_sample_format(af_fp),
afGetVirtualChannels(af_fp, AF_DEFAULT_TRACK),
afGetRate(fh, AF_DEFAULT_TRACK),
audiofile_setup_sample_format(fh),
afGetVirtualChannels(fh, AF_DEFAULT_TRACK),
error)) {
LogError(error);
afCloseFile(af_fp);
afCloseFile(fh);
return;
}
const double total_time = audiofile_get_duration(af_fp);
const double total_time = audiofile_get_duration(fh);
bit_rate = (uint16_t)(is.GetSize() * 8.0 / total_time / 1000.0 + 0.5);
const uint16_t kbit_rate = (uint16_t)
(is.GetSize() * 8.0 / total_time / 1000.0 + 0.5);
fs = (int)afGetVirtualFrameSize(af_fp, AF_DEFAULT_TRACK, 1);
const unsigned frame_size = (unsigned)
afGetVirtualFrameSize(fh, AF_DEFAULT_TRACK, true);
decoder_initialized(decoder, audio_format, true, total_time);
DecoderCommand cmd;
do {
ret = afReadFrames(af_fp, AF_DEFAULT_TRACK, chunk,
CHUNK_SIZE / fs);
if (ret <= 0)
/* pick 1020 since its divisible for 8,16,24, and
32-bit audio */
char chunk[1020];
const int nframes =
afReadFrames(fh, AF_DEFAULT_TRACK, chunk,
sizeof(chunk) / frame_size);
if (nframes <= 0)
break;
cmd = decoder_data(decoder, nullptr,
chunk, ret * fs,
bit_rate);
chunk, nframes * frame_size,
kbit_rate);
if (cmd == DecoderCommand::SEEK) {
AFframecount frame = decoder_seek_where(decoder) *
audio_format.sample_rate;
afSeekFrame(af_fp, AF_DEFAULT_TRACK, frame);
afSeekFrame(fh, AF_DEFAULT_TRACK, frame);
decoder_command_finished(decoder);
cmd = DecoderCommand::NONE;
}
} while (cmd == DecoderCommand::NONE);
afCloseFile(af_fp);
afCloseFile(fh);
}
gcc_pure