oysteikt/mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

decoder/wavpack: support native DSD

Browse Source
This commit is contained in:
Max Kellermann 2016-12-09 21:26:38 +01:00
parent ead7ae8504
commit bc5555933f
1 changed files with 25 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/decoder/plugins/WavpackDecoderPlugin.cxx
View File

@ -43,7 +43,11 @@ static constexpr Domain wavpack_domain("wavpack");
#ifdef OPEN_DSD_AS_PCM
/* libWavPack supports DSD since version 5 */
#ifdef ENABLE_DSD
static constexpr int OPEN_DSD_FLAG = OPEN_DSD_NATIVE;
#else
static constexpr int OPEN_DSD_FLAG = OPEN_DSD_AS_PCM;
#endif
#else
/* no DSD support in this libWavPack version */
static constexpr int OPEN_DSD_FLAG = 0;
@ -104,11 +108,20 @@ format_samples_nop(gcc_unused void *buffer, gcc_unused uint32_t count)
* Choose a MPD sample format from libwavpacks' number of bits.
*/
static SampleFormat
wavpack_bits_to_sample_format(bool is_float, int bytes_per_sample)
wavpack_bits_to_sample_format(bool is_float,
#if defined(OPEN_DSD_AS_PCM) && defined(ENABLE_DSD)
bool is_dsd,
#endif
int bytes_per_sample)
{
if (is_float)
return SampleFormat::FLOAT;
#if defined(OPEN_DSD_AS_PCM) && defined(ENABLE_DSD)
if (is_dsd)
return SampleFormat::DSD;
#endif
switch (bytes_per_sample) {
case 1:
return SampleFormat::S8;
@ -135,8 +148,16 @@ static void
wavpack_decode(DecoderClient &client, WavpackContext *wpc, bool can_seek)
{
const bool is_float = (WavpackGetMode(wpc) & MODE_FLOAT) != 0;
#if defined(OPEN_DSD_AS_PCM) && defined(ENABLE_DSD)
const bool is_dsd = (WavpackGetQualifyMode(wpc) & QMODE_DSD_AUDIO) != 0;
#else
constexpr bool is_dsd = false;
#endif
SampleFormat sample_format =
wavpack_bits_to_sample_format(is_float,
#if defined(OPEN_DSD_AS_PCM) && defined(ENABLE_DSD)
is_dsd,
#endif
WavpackGetBytesPerSample(wpc));
auto audio_format = CheckAudioFormat(WavpackGetSampleRate(wpc),
@ -144,7 +165,9 @@ wavpack_decode(DecoderClient &client, WavpackContext *wpc, bool can_seek)
WavpackGetReducedChannels(wpc));
auto *format_samples = format_samples_nop;
if (!is_float) {
if (is_dsd)
format_samples = format_samples_int<uint8_t>;
else if (!is_float) {
switch (WavpackGetBytesPerSample(wpc)) {
case 1:
format_samples = format_samples_int<int8_t>;