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-rw-r--r--trunk/src/inputPlugins/aac_plugin.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/trunk/src/inputPlugins/aac_plugin.c b/trunk/src/inputPlugins/aac_plugin.c
new file mode 100644
index 000000000..529689706
--- /dev/null
+++ b/trunk/src/inputPlugins/aac_plugin.c
@@ -0,0 +1,475 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "../inputPlugin.h"
+
+#ifdef HAVE_FAAD
+
+#define AAC_MAX_CHANNELS 6
+
+#include "../utils.h"
+#include "../audio.h"
+#include "../log.h"
+#include "../inputStream.h"
+#include "../outputBuffer.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <faad.h>
+
+/* all code here is either based on or copied from FAAD2's frontend code */
+typedef struct {
+ InputStream *inStream;
+ long bytesIntoBuffer;
+ long bytesConsumed;
+ long fileOffset;
+ unsigned char *buffer;
+ int atEof;
+} AacBuffer;
+
+static void fillAacBuffer(AacBuffer * b)
+{
+ if (b->bytesConsumed > 0) {
+ int bread;
+
+ if (b->bytesIntoBuffer) {
+ memmove((void *)b->buffer, (void *)(b->buffer +
+ b->bytesConsumed),
+ b->bytesIntoBuffer);
+ }
+
+ if (!b->atEof) {
+ bread = readFromInputStream(b->inStream,
+ (void *)(b->buffer +
+ b->
+ bytesIntoBuffer),
+ 1, b->bytesConsumed);
+ if (bread != b->bytesConsumed)
+ b->atEof = 1;
+ b->bytesIntoBuffer += bread;
+ }
+
+ b->bytesConsumed = 0;
+
+ if (b->bytesIntoBuffer > 3) {
+ if (memcmp(b->buffer, "TAG", 3) == 0)
+ b->bytesIntoBuffer = 0;
+ }
+ if (b->bytesIntoBuffer > 11) {
+ if (memcmp(b->buffer, "LYRICSBEGIN", 11) == 0) {
+ b->bytesIntoBuffer = 0;
+ }
+ }
+ if (b->bytesIntoBuffer > 8) {
+ if (memcmp(b->buffer, "APETAGEX", 8) == 0) {
+ b->bytesIntoBuffer = 0;
+ }
+ }
+ }
+}
+
+static void advanceAacBuffer(AacBuffer * b, int bytes)
+{
+ b->fileOffset += bytes;
+ b->bytesConsumed = bytes;
+ b->bytesIntoBuffer -= bytes;
+}
+
+static int adtsSampleRates[] =
+ { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
+ 16000, 12000, 11025, 8000, 7350, 0, 0, 0
+};
+
+static int adtsParse(AacBuffer * b, float *length)
+{
+ int frames, frameLength;
+ int tFrameLength = 0;
+ int sampleRate = 0;
+ float framesPerSec, bytesPerFrame;
+
+ /* Read all frames to ensure correct time and bitrate */
+ for (frames = 0;; frames++) {
+ fillAacBuffer(b);
+
+ if (b->bytesIntoBuffer > 7) {
+ /* check syncword */
+ if (!((b->buffer[0] == 0xFF) &&
+ ((b->buffer[1] & 0xF6) == 0xF0))) {
+ break;
+ }
+
+ if (frames == 0) {
+ sampleRate = adtsSampleRates[(b->
+ buffer[2] & 0x3c)
+ >> 2];
+ }
+
+ frameLength = ((((unsigned int)b->buffer[3] & 0x3))
+ << 11) | (((unsigned int)b->buffer[4])
+ << 3) | (b->buffer[5] >> 5);
+
+ tFrameLength += frameLength;
+
+ if (frameLength > b->bytesIntoBuffer)
+ break;
+
+ advanceAacBuffer(b, frameLength);
+ } else
+ break;
+ }
+
+ framesPerSec = (float)sampleRate / 1024.0;
+ if (frames != 0) {
+ bytesPerFrame = (float)tFrameLength / (float)(frames * 1000);
+ } else
+ bytesPerFrame = 0;
+ if (framesPerSec != 0)
+ *length = (float)frames / framesPerSec;
+
+ return 1;
+}
+
+static void initAacBuffer(InputStream * inStream, AacBuffer * b, float *length,
+ size_t * retFileread, size_t * retTagsize)
+{
+ size_t fileread;
+ size_t bread;
+ size_t tagsize;
+
+ if (length)
+ *length = -1;
+
+ memset(b, 0, sizeof(AacBuffer));
+
+ b->inStream = inStream;
+
+ fileread = inStream->size;
+
+ b->buffer = xmalloc(FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS);
+ memset(b->buffer, 0, FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS);
+
+ bread = readFromInputStream(inStream, b->buffer, 1,
+ FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS);
+ b->bytesIntoBuffer = bread;
+ b->bytesConsumed = 0;
+ b->fileOffset = 0;
+
+ if (bread != FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS)
+ b->atEof = 1;
+
+ tagsize = 0;
+ if (!memcmp(b->buffer, "ID3", 3)) {
+ tagsize = (b->buffer[6] << 21) | (b->buffer[7] << 14) |
+ (b->buffer[8] << 7) | (b->buffer[9] << 0);
+
+ tagsize += 10;
+ advanceAacBuffer(b, tagsize);
+ fillAacBuffer(b);
+ }
+
+ if (retFileread)
+ *retFileread = fileread;
+ if (retTagsize)
+ *retTagsize = tagsize;
+
+ if (length == NULL)
+ return;
+
+ if ((b->buffer[0] == 0xFF) && ((b->buffer[1] & 0xF6) == 0xF0)) {
+ adtsParse(b, length);
+ seekInputStream(b->inStream, tagsize, SEEK_SET);
+
+ bread = readFromInputStream(b->inStream, b->buffer, 1,
+ FAAD_MIN_STREAMSIZE *
+ AAC_MAX_CHANNELS);
+ if (bread != FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS)
+ b->atEof = 1;
+ else
+ b->atEof = 0;
+ b->bytesIntoBuffer = bread;
+ b->bytesConsumed = 0;
+ b->fileOffset = tagsize;
+ } else if (memcmp(b->buffer, "ADIF", 4) == 0) {
+ int bitRate;
+ int skipSize = (b->buffer[4] & 0x80) ? 9 : 0;
+ bitRate =
+ ((unsigned int)(b->
+ buffer[4 +
+ skipSize] & 0x0F) << 19) | ((unsigned
+ int)b->
+ buffer[5
+ +
+ skipSize]
+ << 11) |
+ ((unsigned int)b->
+ buffer[6 + skipSize] << 3) | ((unsigned int)b->buffer[7 +
+ skipSize]
+ & 0xE0);
+
+ if (fileread != 0 && bitRate != 0)
+ *length = fileread * 8.0 / bitRate;
+ else
+ *length = fileread;
+ }
+}
+
+static float getAacFloatTotalTime(char *file)
+{
+ AacBuffer b;
+ float length;
+ size_t fileread, tagsize;
+ faacDecHandle decoder;
+ faacDecConfigurationPtr config;
+ unsigned long sampleRate;
+ unsigned char channels;
+ InputStream inStream;
+ long bread;
+
+ if (openInputStream(&inStream, file) < 0)
+ return -1;
+
+ initAacBuffer(&inStream, &b, &length, &fileread, &tagsize);
+
+ if (length < 0) {
+ decoder = faacDecOpen();
+
+ config = faacDecGetCurrentConfiguration(decoder);
+ config->outputFormat = FAAD_FMT_16BIT;
+ faacDecSetConfiguration(decoder, config);
+
+ fillAacBuffer(&b);
+#ifdef HAVE_FAAD_BUFLEN_FUNCS
+ bread = faacDecInit(decoder, b.buffer, b.bytesIntoBuffer,
+ &sampleRate, &channels);
+#else
+ bread = faacDecInit(decoder, b.buffer, &sampleRate, &channels);
+#endif
+ if (bread >= 0 && sampleRate > 0 && channels > 0)
+ length = 0;
+
+ faacDecClose(decoder);
+ }
+
+ if (b.buffer)
+ free(b.buffer);
+ closeInputStream(&inStream);
+
+ return length;
+}
+
+static int getAacTotalTime(char *file)
+{
+ int time = -1;
+ float length;
+
+ if ((length = getAacFloatTotalTime(file)) >= 0)
+ time = length + 0.5;
+
+ return time;
+}
+
+static int aac_decode(OutputBuffer * cb, DecoderControl * dc, char *path)
+{
+ float time;
+ float totalTime;
+ faacDecHandle decoder;
+ faacDecFrameInfo frameInfo;
+ faacDecConfigurationPtr config;
+ long bread;
+ unsigned long sampleRate;
+ unsigned char channels;
+ int eof = 0;
+ unsigned int sampleCount;
+ char *sampleBuffer;
+ size_t sampleBufferLen;
+ /*float * seekTable;
+ long seekTableEnd = -1;
+ int seekPositionFound = 0; */
+ mpd_uint16 bitRate = 0;
+ AacBuffer b;
+ InputStream inStream;
+
+ if ((totalTime = getAacFloatTotalTime(path)) < 0)
+ return -1;
+
+ if (openInputStream(&inStream, path) < 0)
+ return -1;
+
+ initAacBuffer(&inStream, &b, NULL, NULL, NULL);
+
+ decoder = faacDecOpen();
+
+ config = faacDecGetCurrentConfiguration(decoder);
+ config->outputFormat = FAAD_FMT_16BIT;
+#ifdef HAVE_FAACDECCONFIGURATION_DOWNMATRIX
+ config->downMatrix = 1;
+#endif
+#ifdef HAVE_FAACDECCONFIGURATION_DONTUPSAMPLEIMPLICITSBR
+ config->dontUpSampleImplicitSBR = 0;
+#endif
+ faacDecSetConfiguration(decoder, config);
+
+ fillAacBuffer(&b);
+
+#ifdef HAVE_FAAD_BUFLEN_FUNCS
+ bread = faacDecInit(decoder, b.buffer, b.bytesIntoBuffer,
+ &sampleRate, &channels);
+#else
+ bread = faacDecInit(decoder, b.buffer, &sampleRate, &channels);
+#endif
+ if (bread < 0) {
+ ERROR("Error not a AAC stream.\n");
+ faacDecClose(decoder);
+ closeInputStream(b.inStream);
+ if (b.buffer)
+ free(b.buffer);
+ return -1;
+ }
+
+ dc->audioFormat.bits = 16;
+
+ dc->totalTime = totalTime;
+
+ time = 0.0;
+
+ advanceAacBuffer(&b, bread);
+
+ while (!eof) {
+ fillAacBuffer(&b);
+
+ if (b.bytesIntoBuffer == 0) {
+ eof = 1;
+ break;
+ }
+#ifdef HAVE_FAAD_BUFLEN_FUNCS
+ sampleBuffer = faacDecDecode(decoder, &frameInfo, b.buffer,
+ b.bytesIntoBuffer);
+#else
+ sampleBuffer = faacDecDecode(decoder, &frameInfo, b.buffer);
+#endif
+
+ if (frameInfo.error > 0) {
+ ERROR("error decoding AAC file: %s\n", path);
+ ERROR("faad2 error: %s\n",
+ faacDecGetErrorMessage(frameInfo.error));
+ eof = 1;
+ break;
+ }
+#ifdef HAVE_FAACDECFRAMEINFO_SAMPLERATE
+ sampleRate = frameInfo.samplerate;
+#endif
+
+ if (dc->state != DECODE_STATE_DECODE) {
+ dc->audioFormat.channels = frameInfo.channels;
+ dc->audioFormat.sampleRate = sampleRate;
+ getOutputAudioFormat(&(dc->audioFormat),
+ &(cb->audioFormat));
+ dc->state = DECODE_STATE_DECODE;
+ }
+
+ advanceAacBuffer(&b, frameInfo.bytesconsumed);
+
+ sampleCount = (unsigned long)(frameInfo.samples);
+
+ if (sampleCount > 0) {
+ bitRate = frameInfo.bytesconsumed * 8.0 *
+ frameInfo.channels * sampleRate /
+ frameInfo.samples / 1000 + 0.5;
+ time +=
+ (float)(frameInfo.samples) / frameInfo.channels /
+ sampleRate;
+ }
+
+ sampleBufferLen = sampleCount * 2;
+
+ sendDataToOutputBuffer(cb, NULL, dc, 0, sampleBuffer,
+ sampleBufferLen, time, bitRate, NULL);
+ if (dc->seek) {
+ dc->seekError = 1;
+ dc->seek = 0;
+ } else if (dc->stop) {
+ eof = 1;
+ break;
+ }
+ }
+
+ flushOutputBuffer(cb);
+
+ faacDecClose(decoder);
+ closeInputStream(b.inStream);
+ if (b.buffer)
+ free(b.buffer);
+
+ if (dc->state != DECODE_STATE_DECODE)
+ return -1;
+
+ if (dc->seek) {
+ dc->seekError = 1;
+ dc->seek = 0;
+ }
+
+ if (dc->stop) {
+ dc->state = DECODE_STATE_STOP;
+ dc->stop = 0;
+ } else
+ dc->state = DECODE_STATE_STOP;
+
+ return 0;
+}
+
+static MpdTag *aacTagDup(char *file)
+{
+ MpdTag *ret = NULL;
+ int time;
+
+ time = getAacTotalTime(file);
+
+ if (time >= 0) {
+ if ((ret = id3Dup(file)) == NULL)
+ ret = newMpdTag();
+ ret->time = time;
+ } else {
+ DEBUG("aacTagDup: Failed to get total song time from: %s\n",
+ file);
+ }
+
+ return ret;
+}
+
+static char *aacSuffixes[] = { "aac", NULL };
+
+InputPlugin aacPlugin = {
+ "aac",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ aac_decode,
+ aacTagDup,
+ INPUT_PLUGIN_STREAM_FILE,
+ aacSuffixes,
+ NULL
+};
+
+#else
+
+InputPlugin aacPlugin;
+
+#endif /* HAVE_FAAD */
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