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author | Max Kellermann <max@duempel.org> | 2008-10-26 11:29:25 +0100 |
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committer | Max Kellermann <max@duempel.org> | 2008-10-26 11:29:25 +0100 |
commit | e11355f47d545fe523b019481415b1347aecd4bd (patch) | |
tree | f178cd838be280d0517dc0e5910c36cb96a2a80e /src/inputPlugins/aac_plugin.c | |
parent | cbc71191f0ed75c5fafad5c387f009c2139a7bed (diff) | |
download | mpd-e11355f47d545fe523b019481415b1347aecd4bd.tar.gz mpd-e11355f47d545fe523b019481415b1347aecd4bd.tar.xz mpd-e11355f47d545fe523b019481415b1347aecd4bd.zip |
renamed src/inputPlugins/ to src/decoder/
These plugins are not input plugins, they are decoder plugins. No
CamelCase in the directory name.
Diffstat (limited to 'src/inputPlugins/aac_plugin.c')
-rw-r--r-- | src/inputPlugins/aac_plugin.c | 602 |
1 files changed, 0 insertions, 602 deletions
diff --git a/src/inputPlugins/aac_plugin.c b/src/inputPlugins/aac_plugin.c deleted file mode 100644 index 7842bcc22..000000000 --- a/src/inputPlugins/aac_plugin.c +++ /dev/null @@ -1,602 +0,0 @@ -/* 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 "../decoder_api.h" - -#define AAC_MAX_CHANNELS 6 - -#include "../utils.h" -#include "../log.h" - -#include <assert.h> -#include <faad.h> - -/* all code here is either based on or copied from FAAD2's frontend code */ -typedef struct { - struct decoder *decoder; - InputStream *inStream; - size_t bytesIntoBuffer; - size_t bytesConsumed; - off_t fileOffset; - unsigned char *buffer; - int atEof; -} AacBuffer; - -static void aac_buffer_shift(AacBuffer * b, size_t length) -{ - assert(length >= b->bytesConsumed); - assert(length <= b->bytesConsumed + b->bytesIntoBuffer); - - memmove(b->buffer, b->buffer + length, - b->bytesConsumed + b->bytesIntoBuffer - length); - - length -= b->bytesConsumed; - b->bytesConsumed = 0; - b->bytesIntoBuffer -= length; -} - -static void fillAacBuffer(AacBuffer * b) -{ - size_t bread; - - if (b->bytesIntoBuffer >= FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS) - /* buffer already full */ - return; - - aac_buffer_shift(b, b->bytesConsumed); - - if (!b->atEof) { - size_t rest = FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS - - b->bytesIntoBuffer; - - bread = decoder_read(b->decoder, b->inStream, - (void *)(b->buffer + b->bytesIntoBuffer), - rest); - if (bread == 0 && inputStreamAtEOF(b->inStream)) - b->atEof = 1; - b->bytesIntoBuffer += bread; - } - - if ((b->bytesIntoBuffer > 3 && memcmp(b->buffer, "TAG", 3) == 0) || - (b->bytesIntoBuffer > 11 && - memcmp(b->buffer, "LYRICSBEGIN", 11) == 0) || - (b->bytesIntoBuffer > 8 && memcmp(b->buffer, "APETAGEX", 8) == 0)) - b->bytesIntoBuffer = 0; -} - -static void advanceAacBuffer(AacBuffer * b, size_t 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 -}; - -/** - * 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(AacBuffer * b) -{ - if (b->bytesIntoBuffer <= 7) - return 0; - - /* check syncword */ - if (!((b->buffer[0] == 0xFF) && ((b->buffer[1] & 0xF6) == 0xF0))) - return 0; - - return (((unsigned int)b->buffer[3] & 0x3) << 11) | - (((unsigned int)b->buffer[4]) << 3) | - (b->buffer[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(AacBuffer * b) -{ - const unsigned char *p; - size_t frame_length; - - while ((p = memchr(b->buffer, 0xff, b->bytesIntoBuffer)) != NULL) { - /* discard data before 0xff */ - if (p > b->buffer) - aac_buffer_shift(b, p - b->buffer); - - if (b->bytesIntoBuffer <= 7) - /* not enough data yet */ - return 0; - - /* is it a frame? */ - frame_length = adts_check_frame(b); - if (frame_length > 0) - /* yes, it is */ - return frame_length; - - /* it's just some random 0xff byte; discard and and - continue searching */ - aac_buffer_shift(b, 1); - } - - /* nothing at all; discard the whole buffer */ - aac_buffer_shift(b, b->bytesIntoBuffer); - return 0; -} - -static void adtsParse(AacBuffer * b, float *length) -{ - unsigned int frames, frameLength; - int sample_rate = 0; - float framesPerSec; - - /* Read all frames to ensure correct time and bitrate */ - for (frames = 0;; frames++) { - fillAacBuffer(b); - - frameLength = adts_find_frame(b); - if (frameLength > 0) { - if (frames == 0) { - sample_rate = adtsSampleRates[(b-> - buffer[2] & 0x3c) - >> 2]; - } - - if (frameLength > b->bytesIntoBuffer) - break; - - advanceAacBuffer(b, frameLength); - } else - break; - } - - framesPerSec = (float)sample_rate / 1024.0; - if (framesPerSec != 0) - *length = (float)frames / framesPerSec; -} - -static void initAacBuffer(AacBuffer * b, - struct decoder *decoder, InputStream * inStream) -{ - memset(b, 0, sizeof(AacBuffer)); - - b->decoder = decoder; - b->inStream = inStream; - - b->buffer = xmalloc(FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS); - memset(b->buffer, 0, FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS); -} - -static void aac_parse_header(AacBuffer * b, float *length) -{ - size_t fileread; - size_t tagsize; - - if (length) - *length = -1; - - fileread = b->inStream->size; - - fillAacBuffer(b); - - tagsize = 0; - if (b->bytesIntoBuffer >= 10 && !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 (length == NULL) - return; - - if (b->bytesIntoBuffer >= 2 && - (b->buffer[0] == 0xFF) && ((b->buffer[1] & 0xF6) == 0xF0)) { - adtsParse(b, length); - seekInputStream(b->inStream, tagsize, SEEK_SET); - - b->bytesIntoBuffer = 0; - b->bytesConsumed = 0; - b->fileOffset = tagsize; - - fillAacBuffer(b); - } 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; - faacDecHandle decoder; - faacDecConfigurationPtr config; - uint32_t sample_rate; - unsigned char channels; - InputStream inStream; - long bread; - - if (openInputStream(&inStream, file) < 0) - return -1; - - initAacBuffer(&b, NULL, &inStream); - aac_parse_header(&b, &length); - - 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, - &sample_rate, &channels); -#else - bread = faacDecInit(decoder, b.buffer, &sample_rate, &channels); -#endif - if (bread >= 0 && sample_rate > 0 && channels > 0) - length = 0; - - faacDecClose(decoder); - } - - if (b.buffer) - free(b.buffer); - closeInputStream(&inStream); - - return length; -} - -static int getAacTotalTime(char *file) -{ - int file_time = -1; - float length; - - if ((length = getAacFloatTotalTime(file)) >= 0) - file_time = length + 0.5; - - return file_time; -} - -static int aac_stream_decode(struct decoder * mpd_decoder, - InputStream *inStream) -{ - float file_time; - float totalTime = 0; - faacDecHandle decoder; - faacDecFrameInfo frameInfo; - faacDecConfigurationPtr config; - long bread; - struct audio_format audio_format; - uint32_t sample_rate; - unsigned char channels; - unsigned int sampleCount; - char *sampleBuffer; - size_t sampleBufferLen; - uint16_t bitRate = 0; - AacBuffer b; - int initialized = 0; - - initAacBuffer(&b, mpd_decoder, inStream); - - 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); - - while (b.bytesIntoBuffer < FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS && - !b.atEof && - decoder_get_command(mpd_decoder) == DECODE_COMMAND_NONE) { - fillAacBuffer(&b); - adts_find_frame(&b); - fillAacBuffer(&b); - my_usleep(10000); - } - -#ifdef HAVE_FAAD_BUFLEN_FUNCS - bread = faacDecInit(decoder, b.buffer, b.bytesIntoBuffer, - &sample_rate, &channels); -#else - bread = faacDecInit(decoder, b.buffer, &sample_rate, &channels); -#endif - if (bread < 0) { - ERROR("Error not a AAC stream.\n"); - faacDecClose(decoder); - if (b.buffer) - free(b.buffer); - return -1; - } - - audio_format.bits = 16; - - file_time = 0.0; - - advanceAacBuffer(&b, bread); - - while (1) { - fillAacBuffer(&b); - adts_find_frame(&b); - fillAacBuffer(&b); - - if (b.bytesIntoBuffer == 0) - 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 stream\n"); - ERROR("faad2 error: %s\n", - faacDecGetErrorMessage(frameInfo.error)); - break; - } -#ifdef HAVE_FAACDECFRAMEINFO_SAMPLERATE - sample_rate = frameInfo.samplerate; -#endif - - if (!initialized) { - audio_format.channels = frameInfo.channels; - audio_format.sample_rate = sample_rate; - decoder_initialized(mpd_decoder, &audio_format, totalTime); - initialized = 1; - } - - advanceAacBuffer(&b, frameInfo.bytesconsumed); - - sampleCount = (unsigned long)(frameInfo.samples); - - if (sampleCount > 0) { - bitRate = frameInfo.bytesconsumed * 8.0 * - frameInfo.channels * sample_rate / - frameInfo.samples / 1000 + 0.5; - file_time += - (float)(frameInfo.samples) / frameInfo.channels / - sample_rate; - } - - sampleBufferLen = sampleCount * 2; - - decoder_data(mpd_decoder, NULL, 0, sampleBuffer, - sampleBufferLen, file_time, - bitRate, NULL); - if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) { - decoder_seek_error(mpd_decoder); - } else if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_STOP) - break; - } - - decoder_flush(mpd_decoder); - - faacDecClose(decoder); - if (b.buffer) - free(b.buffer); - - if (!initialized) - return -1; - - if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) { - decoder_seek_error(mpd_decoder); - } - - return 0; -} - - -static int aac_decode(struct decoder * mpd_decoder, char *path) -{ - float file_time; - float totalTime; - faacDecHandle decoder; - faacDecFrameInfo frameInfo; - faacDecConfigurationPtr config; - long bread; - struct audio_format audio_format; - uint32_t sample_rate; - unsigned char channels; - unsigned int sampleCount; - char *sampleBuffer; - size_t sampleBufferLen; - /*float * seekTable; - long seekTableEnd = -1; - int seekPositionFound = 0; */ - uint16_t bitRate = 0; - AacBuffer b; - InputStream inStream; - int initialized = 0; - - if ((totalTime = getAacFloatTotalTime(path)) < 0) - return -1; - - if (openInputStream(&inStream, path) < 0) - return -1; - - initAacBuffer(&b, mpd_decoder, &inStream); - aac_parse_header(&b, 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, - &sample_rate, &channels); -#else - bread = faacDecInit(decoder, b.buffer, &sample_rate, &channels); -#endif - if (bread < 0) { - ERROR("Error not a AAC stream.\n"); - faacDecClose(decoder); - if (b.buffer) - free(b.buffer); - return -1; - } - - audio_format.bits = 16; - - file_time = 0.0; - - advanceAacBuffer(&b, bread); - - while (1) { - fillAacBuffer(&b); - - if (b.bytesIntoBuffer == 0) - 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)); - break; - } -#ifdef HAVE_FAACDECFRAMEINFO_SAMPLERATE - sample_rate = frameInfo.samplerate; -#endif - - if (!initialized) { - audio_format.channels = frameInfo.channels; - audio_format.sample_rate = sample_rate; - decoder_initialized(mpd_decoder, &audio_format, - totalTime); - initialized = 1; - } - - advanceAacBuffer(&b, frameInfo.bytesconsumed); - - sampleCount = (unsigned long)(frameInfo.samples); - - if (sampleCount > 0) { - bitRate = frameInfo.bytesconsumed * 8.0 * - frameInfo.channels * sample_rate / - frameInfo.samples / 1000 + 0.5; - file_time += - (float)(frameInfo.samples) / frameInfo.channels / - sample_rate; - } - - sampleBufferLen = sampleCount * 2; - - decoder_data(mpd_decoder, NULL, 0, sampleBuffer, - sampleBufferLen, file_time, - bitRate, NULL); - if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) { - decoder_seek_error(mpd_decoder); - } else if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_STOP) - break; - } - - decoder_flush(mpd_decoder); - - faacDecClose(decoder); - if (b.buffer) - free(b.buffer); - - if (!initialized) - return -1; - - if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) { - decoder_seek_error(mpd_decoder); - } - - return 0; -} - -static struct tag *aacTagDup(char *file) -{ - struct tag *ret = NULL; - int file_time = getAacTotalTime(file); - - if (file_time >= 0) { - if ((ret = tag_id3_load(file)) == NULL) - ret = tag_new(); - ret->time = file_time; - } else { - DEBUG("aacTagDup: Failed to get total song time from: %s\n", - file); - } - - return ret; -} - -static const char *aac_suffixes[] = { "aac", NULL }; -static const char *aac_mimeTypes[] = { "audio/aac", "audio/aacp", NULL }; - -struct decoder_plugin aacPlugin = { - .name = "aac", - .stream_decode = aac_stream_decode, - .file_decode = aac_decode, - .tag_dup = aacTagDup, - .stream_types = INPUT_PLUGIN_STREAM_FILE | INPUT_PLUGIN_STREAM_URL, - .suffixes = aac_suffixes, - .mime_types = aac_mimeTypes -}; |