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-rw-r--r--src/decoder/DecoderAPI.cxx18
-rw-r--r--src/decoder/DecoderAPI.hxx12
2 files changed, 30 insertions, 0 deletions
diff --git a/src/decoder/DecoderAPI.cxx b/src/decoder/DecoderAPI.cxx
index 926a3955e..7349b00db 100644
--- a/src/decoder/DecoderAPI.cxx
+++ b/src/decoder/DecoderAPI.cxx
@@ -237,6 +237,24 @@ decoder_seek_where_ms(Decoder &decoder)
return unsigned(dc.seek_where * 1000);
}
+uint64_t
+decoder_seek_where_frame(Decoder &decoder)
+{
+ const DecoderControl &dc = decoder.dc;
+
+ assert(dc.pipe != nullptr);
+
+ if (decoder.initial_seek_running)
+ return uint64_t(dc.start_ms) * dc.in_audio_format.sample_rate
+ / 1000;
+
+ assert(dc.command == DecoderCommand::SEEK);
+
+ decoder.seeking = true;
+
+ return uint64_t(dc.seek_where * dc.in_audio_format.sample_rate);
+}
+
void decoder_seek_error(Decoder & decoder)
{
DecoderControl &dc = decoder.dc;
diff --git a/src/decoder/DecoderAPI.hxx b/src/decoder/DecoderAPI.hxx
index ddcead4b1..2464ee6fa 100644
--- a/src/decoder/DecoderAPI.hxx
+++ b/src/decoder/DecoderAPI.hxx
@@ -40,6 +40,8 @@
// IWYU pragma: end_exports
+#include <stdint.h>
+
class Error;
/**
@@ -99,6 +101,16 @@ unsigned
decoder_seek_where_ms(Decoder &decoder);
/**
+ * Call this when you have received the DecoderCommand::SEEK command.
+ *
+ * @param decoder the decoder object
+ * @return the destination position for the seek in frames
+ */
+gcc_pure
+uint64_t
+decoder_seek_where_frame(Decoder &decoder);
+
+/**
* Call this instead of decoder_command_finished() when seeking has
* failed.
*