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authorMax Kellermann <max@duempel.org>2014-08-26 11:04:34 +0200
committerMax Kellermann <max@duempel.org>2014-08-26 11:07:47 +0200
commit69b5929c5a0d81c8fd45c315aad84603f68c6cea (patch)
tree5e3d8982b5f1f4184022460d402721c02248120e /src
parent316c72a4aea4319443e7ea43e06b027f2b7b1ced (diff)
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decoder/mad: use integer seek times
Avoid roundtrips to floating point.
Diffstat (limited to 'src')
-rw-r--r--src/decoder/plugins/MadDecoderPlugin.cxx19
1 files changed, 9 insertions, 10 deletions
diff --git a/src/decoder/plugins/MadDecoderPlugin.cxx b/src/decoder/plugins/MadDecoderPlugin.cxx
index 6bc795309..5fa409435 100644
--- a/src/decoder/plugins/MadDecoderPlugin.cxx
+++ b/src/decoder/plugins/MadDecoderPlugin.cxx
@@ -116,8 +116,8 @@ struct MadDecoder {
unsigned char input_buffer[READ_BUFFER_SIZE];
int32_t output_buffer[MP3_DATA_OUTPUT_BUFFER_SIZE];
float total_time;
- float elapsed_time;
- float seek_where;
+ unsigned elapsed_time;
+ unsigned seek_where;
enum muteframe mute_frame;
long *frame_offsets;
mad_timer_t *times;
@@ -159,7 +159,7 @@ struct MadDecoder {
bool DecodeFirstFrame(Tag **tag);
gcc_pure
- long TimeToFrame(double t) const;
+ long TimeToFrame(unsigned t) const;
void UpdateTimerNextFrame();
@@ -847,14 +847,13 @@ mad_decoder_total_file_time(InputStream &is)
}
long
-MadDecoder::TimeToFrame(double t) const
+MadDecoder::TimeToFrame(unsigned t) const
{
unsigned long i;
for (i = 0; i < highest_frame; ++i) {
- double frame_time =
- mad_timer_count(times[i],
- MAD_UNITS_MILLISECONDS) / 1000.;
+ unsigned frame_time =
+ mad_timer_count(times[i], MAD_UNITS_MILLISECONDS);
if (frame_time >= t)
break;
}
@@ -885,7 +884,7 @@ MadDecoder::UpdateTimerNextFrame()
timer = times[current_frame];
current_frame++;
- elapsed_time = mad_timer_count(timer, MAD_UNITS_MILLISECONDS) / 1000.0;
+ elapsed_time = mad_timer_count(timer, MAD_UNITS_MILLISECONDS);
}
DecoderCommand
@@ -990,7 +989,7 @@ MadDecoder::Read()
assert(input_stream.IsSeekable());
unsigned long j =
- TimeToFrame(decoder_seek_where(*decoder));
+ TimeToFrame(decoder_seek_where_ms(*decoder));
if (j < highest_frame) {
if (Seek(frame_offsets[j])) {
current_frame = j;
@@ -998,7 +997,7 @@ MadDecoder::Read()
} else
decoder_seek_error(*decoder);
} else {
- seek_where = decoder_seek_where(*decoder);
+ seek_where = decoder_seek_where_ms(*decoder);
mute_frame = MUTEFRAME_SEEK;
decoder_command_finished(*decoder);
}