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Diffstat (limited to 'src/decoder/plugins/OpenmptDecoderPlugin.cxx')
| -rw-r--r-- | src/decoder/plugins/OpenmptDecoderPlugin.cxx | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/decoder/plugins/OpenmptDecoderPlugin.cxx b/src/decoder/plugins/OpenmptDecoderPlugin.cxx new file mode 100644 index 000000000..bedb8341d --- /dev/null +++ b/src/decoder/plugins/OpenmptDecoderPlugin.cxx @@ -0,0 +1,163 @@ +/* + * Copyright 2003-2021 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "OpenmptDecoderPlugin.hxx" +#include "decoder/Features.h" +#include "ModCommon.hxx" +#include "../DecoderAPI.hxx" +#include "input/InputStream.hxx" +#include "tag/Handler.hxx" +#include "tag/Type.h" +#include "util/Domain.hxx" +#include "util/RuntimeError.hxx" +#include "util/StringView.hxx" +#include "Log.hxx" + +#include <libopenmpt/libopenmpt.hpp> + +#include <cassert> + +static constexpr Domain openmpt_domain("openmpt"); + +static constexpr size_t OPENMPT_FRAME_SIZE = 4096; +static constexpr int32_t OPENMPT_SAMPLE_RATE = 48000; + +static int openmpt_repeat_count; +static int openmpt_stereo_separation; +static int openmpt_interpolation_filter; +static bool openmpt_override_mptm_interp_filter; +static int openmpt_volume_ramping; +static bool openmpt_sync_samples; +static bool openmpt_emulate_amiga; +#ifdef HAVE_LIBOPENMPT_VERSION_0_5 +static std::string_view openmpt_emulate_amiga_type; +#endif + +static bool +openmpt_decoder_init(const ConfigBlock &block) +{ + openmpt_repeat_count = block.GetBlockValue("repeat_count", 0); + openmpt_stereo_separation = block.GetBlockValue("stereo_separation", 100); + openmpt_interpolation_filter = block.GetBlockValue("interpolation_filter", 0); + openmpt_override_mptm_interp_filter = block.GetBlockValue("override_mptm_interp_filter", false); + openmpt_volume_ramping = block.GetBlockValue("volume_ramping", -1); + openmpt_sync_samples = block.GetBlockValue("sync_samples", true); + openmpt_emulate_amiga = block.GetBlockValue("emulate_amiga", true); +#ifdef HAVE_LIBOPENMPT_VERSION_0_5 + openmpt_emulate_amiga_type = block.GetBlockValue("emulate_amiga_type", "auto"); +#endif + + return true; +} + +static void +mod_decode(DecoderClient &client, InputStream &is) +{ + int ret; + char audio_buffer[OPENMPT_FRAME_SIZE]; + + const auto buffer = mod_loadfile(&openmpt_domain, &client, is); + if (buffer.IsNull()) { + LogWarning(openmpt_domain, "could not load stream"); + return; + } + + openmpt::module mod(buffer.data(), buffer.size()); + + /* alter settings */ + mod.set_repeat_count(openmpt_repeat_count); + mod.set_render_param(mod.RENDER_STEREOSEPARATION_PERCENT, openmpt_stereo_separation); + mod.set_render_param(mod.RENDER_INTERPOLATIONFILTER_LENGTH, openmpt_interpolation_filter); + if (!openmpt_override_mptm_interp_filter && mod.get_metadata("type") == "mptm") { + /* The MPTM format has a setting for which interpolation filter should be used. + * If we want to play the module back the way the composer intended it, + * we have to set the interpolation filter setting in libopenmpt back to 0: internal default. */ + mod.set_render_param(mod.RENDER_INTERPOLATIONFILTER_LENGTH, 0); + } + mod.set_render_param(mod.RENDER_VOLUMERAMPING_STRENGTH, openmpt_volume_ramping); +#ifdef HAVE_LIBOPENMPT_VERSION_0_5 + mod.ctl_set_boolean("seek.sync_samples", openmpt_sync_samples); + mod.ctl_set_boolean("render.resampler.emulate_amiga", openmpt_emulate_amiga); + mod.ctl_set_text("render.resampler.emulate_amiga_type", openmpt_emulate_amiga_type); +#else + mod.ctl_set("seek.sync_samples", std::to_string((unsigned)openmpt_sync_samples)); + mod.ctl_set("render.resampler.emulate_amiga", std::to_string((unsigned)openmpt_emulate_amiga)); +#endif + + static constexpr AudioFormat audio_format(OPENMPT_SAMPLE_RATE, SampleFormat::FLOAT, 2); + assert(audio_format.IsValid()); + + client.Ready(audio_format, is.IsSeekable(), + SongTime::FromS(mod.get_duration_seconds())); + + DecoderCommand cmd; + do { + ret = mod.read_interleaved_stereo(OPENMPT_SAMPLE_RATE, OPENMPT_FRAME_SIZE / 2 / sizeof(float), (float*)audio_buffer); + if (ret <= 0) + break; + + cmd = client.SubmitData(nullptr, + audio_buffer, ret * 2 * sizeof(float), + 0); + + if (cmd == DecoderCommand::SEEK) { + mod.set_position_seconds(client.GetSeekTime().ToS()); + client.CommandFinished(); + } + + } while (cmd != DecoderCommand::STOP); +} + +static bool +openmpt_scan_stream(InputStream &is, TagHandler &handler) noexcept +{ + const auto buffer = mod_loadfile(&openmpt_domain, nullptr, is); + if (buffer.IsNull()) { + LogWarning(openmpt_domain, "could not load stream"); + return false; + } + + openmpt::module mod(buffer.data(), buffer.size()); + + handler.OnDuration(SongTime::FromS(mod.get_duration_seconds())); + + /* Tagging */ + handler.OnTag(TAG_TITLE, mod.get_metadata("title").c_str()); + handler.OnTag(TAG_ARTIST, mod.get_metadata("artist").c_str()); + handler.OnTag(TAG_COMMENT, mod.get_metadata("message").c_str()); + handler.OnTag(TAG_DATE, mod.get_metadata("date").c_str()); + handler.OnTag(TAG_PERFORMER, mod.get_metadata("tracker").c_str()); + + return true; +} + +static const char *const mod_suffixes[] = { + "mptm", "mod", "s3m", "xm", "it", "669", "amf", "ams", + "c67", "dbm", "digi", "dmf", "dsm", "dtm", "far", "imf", + "ice", "j2b", "m15", "mdl", "med", "mms", "mt2", "mtm", + "nst", "okt", "plm", "psm", "pt36", "ptm", "sfx", "sfx2", + "st26", "stk", "stm", "stp", "ult", "wow", "gdm", "mo3", + "oxm", "umx", "xpk", "ppm", "mmcmp", + nullptr +}; + +constexpr DecoderPlugin openmpt_decoder_plugin = + DecoderPlugin("openmpt", mod_decode, openmpt_scan_stream) + .WithInit(openmpt_decoder_init) + .WithSuffixes(mod_suffixes); |