decoder/*: move to decoder/plugins/

1 files changed, 0 insertions, 464 deletions

diff --git a/src/decoder/FaadDecoderPlugin.cxx b/src/decoder/FaadDecoderPlugin.cxx
deleted file mode 100644
index 5e7ccda52..000000000
--- a/src/decoder/FaadDecoderPlugin.cxx
+++ /dev/null
@@ -1,464 +0,0 @@
-/*
- * Copyright (C) 2003-2014 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 "config.h"
-#include "FaadDecoderPlugin.hxx"
-#include "DecoderAPI.hxx"
-#include "DecoderBuffer.hxx"
-#include "InputStream.hxx"
-#include "CheckAudioFormat.hxx"
-#include "tag/TagHandler.hxx"
-#include "util/ConstBuffer.hxx"
-#include "util/Error.hxx"
-#include "util/Domain.hxx"
-#include "Log.hxx"
-
-#include <neaacdec.h>
-
-#include <assert.h>
-#include <string.h>
-#include <unistd.h>
-
-#define AAC_MAX_CHANNELS	6
-
-static const unsigned adts_sample_rates[] =
-    { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
-	16000, 12000, 11025, 8000, 7350, 0, 0, 0
-};
-
-static constexpr Domain faad_decoder_domain("faad_decoder");
-
-/**
- * Check whether the buffer head is an AAC frame, and return the frame
- * length.  Returns 0 if it is not a frame.
- */
-static size_t
-adts_check_frame(const unsigned char *data)
-{
-	/* check syncword */
-	if (!((data[0] == 0xFF) && ((data[1] & 0xF6) == 0xF0)))
-		return 0;
-
-	return (((unsigned int)data[3] & 0x3) << 11) |
-		(((unsigned int)data[4]) << 3) |
-		(data[5] >> 5);
-}
-
-/**
- * Find the next AAC frame in the buffer.  Returns 0 if no frame is
- * found or if not enough data is available.
- */
-static size_t
-adts_find_frame(DecoderBuffer *buffer)
-{
-	while (true) {
-		auto data = ConstBuffer<uint8_t>::FromVoid(decoder_buffer_read(buffer));
-		if (data.size < 8) {
-			/* not enough data yet */
-			if (!decoder_buffer_fill(buffer))
-				/* failed */
-				return 0;
-
-			continue;
-		}
-
-		/* find the 0xff marker */
-		const uint8_t *p = (const uint8_t *)
-			memchr(data.data, 0xff, data.size);
-		if (p == nullptr) {
-			/* no marker - discard the buffer */
-			decoder_buffer_clear(buffer);
-			continue;
-		}
-
-		if (p > data.data) {
-			/* discard data before 0xff */
-			decoder_buffer_consume(buffer, p - data.data);
-			continue;
-		}
-
-		/* is it a frame? */
-		size_t frame_length = adts_check_frame(data.data);
-		if (frame_length == 0) {
-			/* it's just some random 0xff byte; discard it
-			   and continue searching */
-			decoder_buffer_consume(buffer, 1);
-			continue;
-		}
-
-		if (data.size < frame_length) {
-			/* available buffer size is smaller than the
-			   frame will be - attempt to read more
-			   data */
-			if (!decoder_buffer_fill(buffer)) {
-				/* not enough data; discard this frame
-				   to prevent a possible buffer
-				   overflow */
-				decoder_buffer_clear(buffer);
-			}
-
-			continue;
-		}
-
-		/* found a full frame! */
-		return frame_length;
-	}
-}
-
-static float
-adts_song_duration(DecoderBuffer *buffer)
-{
-	unsigned sample_rate = 0;
-
-	/* Read all frames to ensure correct time and bitrate */
-	unsigned frames = 0;
-	for (;; frames++) {
-		unsigned frame_length = adts_find_frame(buffer);
-		if (frame_length == 0)
-			break;
-
-		if (frames == 0) {
-			auto data = ConstBuffer<uint8_t>::FromVoid(decoder_buffer_read(buffer));
-			assert(!data.IsEmpty());
-			assert(frame_length <= data.size);
-
-			sample_rate = adts_sample_rates[(data.data[2] & 0x3c) >> 2];
-		}
-
-		decoder_buffer_consume(buffer, frame_length);
-	}
-
-	float frames_per_second = (float)sample_rate / 1024.0;
-	if (frames_per_second <= 0)
-		return -1;
-
-	return (float)frames / frames_per_second;
-}
-
-static float
-faad_song_duration(DecoderBuffer *buffer, InputStream &is)
-{
-	const auto size = is.GetSize();
-	const size_t fileread = size >= 0 ? size : 0;
-
-	decoder_buffer_fill(buffer);
-	auto data = ConstBuffer<uint8_t>::FromVoid(decoder_buffer_read(buffer));
-	if (data.IsEmpty())
-		return -1;
-
-	size_t tagsize = 0;
-	if (data.size >= 10 && !memcmp(data.data, "ID3", 3)) {
-		/* skip the ID3 tag */
-
-		tagsize = (data.data[6] << 21) | (data.data[7] << 14) |
-		    (data.data[8] << 7) | (data.data[9] << 0);
-
-		tagsize += 10;
-
-		bool success = decoder_buffer_skip(buffer, tagsize) &&
-			decoder_buffer_fill(buffer);
-		if (!success)
-			return -1;
-
-		data = ConstBuffer<uint8_t>::FromVoid(decoder_buffer_read(buffer));
-		if (data.IsEmpty())
-			return -1;
-	}
-
-	if (is.IsSeekable() && data.size >= 2 &&
-	    data.data[0] == 0xFF && ((data.data[1] & 0xF6) == 0xF0)) {
-		/* obtain the duration from the ADTS header */
-		float song_length = adts_song_duration(buffer);
-
-		is.LockSeek(tagsize, SEEK_SET, IgnoreError());
-
-		decoder_buffer_clear(buffer);
-		decoder_buffer_fill(buffer);
-
-		return song_length;
-	} else if (data.size >= 5 && memcmp(data.data, "ADIF", 4) == 0) {
-		/* obtain the duration from the ADIF header */
-		unsigned bit_rate;
-		size_t skip_size = (data.data[4] & 0x80) ? 9 : 0;
-
-		if (8 + skip_size > data.size)
-			/* not enough data yet; skip parsing this
-			   header */
-			return -1;
-
-		bit_rate = ((data.data[4 + skip_size] & 0x0F) << 19) |
-			(data.data[5 + skip_size] << 11) |
-			(data.data[6 + skip_size] << 3) |
-			(data.data[7 + skip_size] & 0xE0);
-
-		if (fileread != 0 && bit_rate != 0)
-			return fileread * 8.0 / bit_rate;
-		else
-			return fileread;
-	} else
-		return -1;
-}
-
-/**
- * Wrapper for NeAACDecInit() which works around some API
- * inconsistencies in libfaad.
- */
-static bool
-faad_decoder_init(NeAACDecHandle decoder, DecoderBuffer *buffer,
-		  AudioFormat &audio_format, Error &error)
-{
-	uint32_t sample_rate;
-#ifdef HAVE_FAAD_LONG
-	/* neaacdec.h declares all arguments as "unsigned long", but
-	   internally expects uint32_t pointers.  To avoid gcc
-	   warnings, use this workaround. */
-	unsigned long *sample_rate_p = (unsigned long *)(void *)&sample_rate;
-#else
-	uint32_t *sample_rate_p = &sample_rate;
-#endif
-
-	auto data = ConstBuffer<uint8_t>::FromVoid(decoder_buffer_read(buffer));
-	if (data.IsEmpty()) {
-		error.Set(faad_decoder_domain, "Empty file");
-		return false;
-	}
-
-	uint8_t channels;
-	int32_t nbytes = NeAACDecInit(decoder,
-				      /* deconst hack, libfaad requires this */
-				      const_cast<uint8_t *>(data.data),
-				      data.size,
-				      sample_rate_p, &channels);
-	if (nbytes < 0) {
-		error.Set(faad_decoder_domain, "Not an AAC stream");
-		return false;
-	}
-
-	decoder_buffer_consume(buffer, nbytes);
-
-	return audio_format_init_checked(audio_format, sample_rate,
-					 SampleFormat::S16, channels, error);
-}
-
-/**
- * Wrapper for NeAACDecDecode() which works around some API
- * inconsistencies in libfaad.
- */
-static const void *
-faad_decoder_decode(NeAACDecHandle decoder, DecoderBuffer *buffer,
-		    NeAACDecFrameInfo *frame_info)
-{
-	auto data = ConstBuffer<uint8_t>::FromVoid(decoder_buffer_read(buffer));
-	if (data.IsEmpty())
-		return nullptr;
-
-	return NeAACDecDecode(decoder, frame_info,
-			      /* deconst hack, libfaad requires this */
-			      const_cast<uint8_t *>(data.data),
-			      data.size);
-}
-
-/**
- * Get a song file's total playing time in seconds, as a float.
- * Returns 0 if the duration is unknown, and a negative value if the
- * file is invalid.
- */
-static float
-faad_get_file_time_float(InputStream &is)
-{
-	DecoderBuffer *buffer =
-		decoder_buffer_new(nullptr, is,
-				   FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS);
-	float length = faad_song_duration(buffer, is);
-
-	if (length < 0) {
-		NeAACDecHandle decoder = NeAACDecOpen();
-
-		NeAACDecConfigurationPtr config =
-			NeAACDecGetCurrentConfiguration(decoder);
-		config->outputFormat = FAAD_FMT_16BIT;
-		NeAACDecSetConfiguration(decoder, config);
-
-		decoder_buffer_fill(buffer);
-
-		AudioFormat audio_format;
-		if (faad_decoder_init(decoder, buffer, audio_format,
-				      IgnoreError()))
-			length = 0;
-
-		NeAACDecClose(decoder);
-	}
-
-	decoder_buffer_free(buffer);
-
-	return length;
-}
-
-/**
- * Get a song file's total playing time in seconds, as an int.
- * Returns 0 if the duration is unknown, and a negative value if the
- * file is invalid.
- */
-static int
-faad_get_file_time(InputStream &is)
-{
-	int file_time = -1;
-	float length;
-
-	if ((length = faad_get_file_time_float(is)) >= 0)
-		file_time = length + 0.5;
-
-	return file_time;
-}
-
-static void
-faad_stream_decode(Decoder &mpd_decoder, InputStream &is)
-{
-	DecoderBuffer *buffer =
-		decoder_buffer_new(&mpd_decoder, is,
-				   FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS);
-	const float total_time = faad_song_duration(buffer, is);
-
-	/* create the libfaad decoder */
-
-	NeAACDecHandle decoder = NeAACDecOpen();
-
-	NeAACDecConfigurationPtr config =
-		NeAACDecGetCurrentConfiguration(decoder);
-	config->outputFormat = FAAD_FMT_16BIT;
-	config->downMatrix = 1;
-	config->dontUpSampleImplicitSBR = 0;
-	NeAACDecSetConfiguration(decoder, config);
-
-	while (!decoder_buffer_is_full(buffer) && !is.LockIsEOF() &&
-	       decoder_get_command(mpd_decoder) == DecoderCommand::NONE) {
-		adts_find_frame(buffer);
-		decoder_buffer_fill(buffer);
-	}
-
-	/* initialize it */
-
-	Error error;
-	AudioFormat audio_format;
-	if (!faad_decoder_init(decoder, buffer, audio_format, error)) {
-		LogError(error);
-		NeAACDecClose(decoder);
-		decoder_buffer_free(buffer);
-		return;
-	}
-
-	/* initialize the MPD core */
-
-	decoder_initialized(mpd_decoder, audio_format, false, total_time);
-
-	/* the decoder loop */
-
-	DecoderCommand cmd;
-	unsigned bit_rate = 0;
-	do {
-		size_t frame_size;
-		const void *decoded;
-		NeAACDecFrameInfo frame_info;
-
-		/* find the next frame */
-
-		frame_size = adts_find_frame(buffer);
-		if (frame_size == 0)
-			/* end of file */
-			break;
-
-		/* decode it */
-
-		decoded = faad_decoder_decode(decoder, buffer, &frame_info);
-
-		if (frame_info.error > 0) {
-			FormatWarning(faad_decoder_domain,
-				      "error decoding AAC stream: %s",
-				      NeAACDecGetErrorMessage(frame_info.error));
-			break;
-		}
-
-		if (frame_info.channels != audio_format.channels) {
-			FormatDefault(faad_decoder_domain,
-				      "channel count changed from %u to %u",
-				      audio_format.channels, frame_info.channels);
-			break;
-		}
-
-		if (frame_info.samplerate != audio_format.sample_rate) {
-			FormatDefault(faad_decoder_domain,
-				      "sample rate changed from %u to %lu",
-				      audio_format.sample_rate,
-				      (unsigned long)frame_info.samplerate);
-			break;
-		}
-
-		decoder_buffer_consume(buffer, frame_info.bytesconsumed);
-
-		/* update bit rate and position */
-
-		if (frame_info.samples > 0) {
-			bit_rate = frame_info.bytesconsumed * 8.0 *
-			    frame_info.channels * audio_format.sample_rate /
-			    frame_info.samples / 1000 + 0.5;
-		}
-
-		/* send PCM samples to MPD */
-
-		cmd = decoder_data(mpd_decoder, is, decoded,
-				   (size_t)frame_info.samples * 2,
-				   bit_rate);
-	} while (cmd != DecoderCommand::STOP);
-
-	/* cleanup */
-
-	NeAACDecClose(decoder);
-	decoder_buffer_free(buffer);
-}
-
-static bool
-faad_scan_stream(InputStream &is,
-		 const struct tag_handler *handler, void *handler_ctx)
-{
-	int file_time = faad_get_file_time(is);
-
-	if (file_time < 0)
-		return false;
-
-	tag_handler_invoke_duration(handler, handler_ctx, file_time);
-	return true;
-}
-
-static const char *const faad_suffixes[] = { "aac", nullptr };
-static const char *const faad_mime_types[] = {
-	"audio/aac", "audio/aacp", nullptr
-};
-
-const DecoderPlugin faad_decoder_plugin = {
-	"faad",
-	nullptr,
-	nullptr,
-	faad_stream_decode,
-	nullptr,
-	nullptr,
-	faad_scan_stream,
-	nullptr,
-	faad_suffixes,
-	faad_mime_types,
-};