diff options
Diffstat (limited to 'faad2/src/aacDECdrop/decode.c')
| -rw-r--r-- | faad2/src/aacDECdrop/decode.c | 566 |
1 files changed, 0 insertions, 566 deletions
diff --git a/faad2/src/aacDECdrop/decode.c b/faad2/src/aacDECdrop/decode.c deleted file mode 100644 index 8eca01c..0000000 --- a/faad2/src/aacDECdrop/decode.c +++ /dev/null @@ -1,566 +0,0 @@ -/*
-** FAAD - Freeware Advanced Audio Decoder
-** Copyright (C) 2002 M. Bakker
-**
-** 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.
-**
-** $Id: decode.c,v 1.16 2004/04/03 19:08:37 menno Exp $
-** $Id: decode.c,v 1.16 2004/04/03 19:08:37 menno Exp $
-**/
-
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#define off_t __int64
-#else
-#include <time.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <neaacdec.h>
-#include <mp4ff.h>
-
-#include "audio.h"
-#include "decode.h"
-#include "misc.h"
-#include "wave_out.h"
-
-#ifndef min
-#define min(a,b) ( (a) < (b) ? (a) : (b) )
-#endif
-
-#define MAX_CHANNELS 8 /* make this higher to support files with
- more channels */
-
-/* FAAD file buffering routines */
-/* declare buffering variables */
-#define DEC_BUFF_VARS \
- int fileread, bytesconsumed, k; \
- int buffercount = 0, buffer_index = 0; \
- unsigned char *buffer; \
- unsigned int bytes_in_buffer = 0;
-
-/* initialise buffering */
-#define INIT_BUFF(file) \
- fseek(file, 0, SEEK_END); \
- fileread = ftell(file); \
- fseek(file, 0, SEEK_SET); \
- buffer = (unsigned char*)malloc(FAAD_MIN_STREAMSIZE*MAX_CHANNELS); \
- memset(buffer, 0, FAAD_MIN_STREAMSIZE*MAX_CHANNELS); \
- bytes_in_buffer = fread(buffer, 1, FAAD_MIN_STREAMSIZE*MAX_CHANNELS, file);
-
-/* skip bytes in buffer */
-#define UPDATE_BUFF_SKIP(bytes) \
- fseek(infile, bytes, SEEK_SET); \
- buffer_index += bytes; \
- buffercount = 0; \
- bytes_in_buffer = fread(buffer, 1, FAAD_MIN_STREAMSIZE*MAX_CHANNELS, infile);
-
-/* update buffer */
-#define UPDATE_BUFF_READ \
- if (bytesconsumed > 0) { \
- for (k = 0; k < (FAAD_MIN_STREAMSIZE*MAX_CHANNELS - bytesconsumed); k++) \
- buffer[k] = buffer[k + bytesconsumed]; \
- bytes_in_buffer += fread(buffer + (FAAD_MIN_STREAMSIZE*MAX_CHANNELS) - bytesconsumed, 1, bytesconsumed, infile); \
- bytesconsumed = 0; \
- }
-
-/* update buffer indices after NeAACDecDecode */
-#define UPDATE_BUFF_IDX(frame) \
- bytesconsumed += frame.bytesconsumed; \
- buffer_index += frame.bytesconsumed; \
- bytes_in_buffer -= frame.bytesconsumed;
-
-/* true if decoding has to stop because of EOF */
-#define IS_FILE_END buffer_index >= fileread
-
-/* end buffering */
-#define END_BUFF if (buffer) free(buffer);
-
-
-
-/* globals */
-char *progName;
-extern int stop_decoding;
-
-int id3v2_tag(unsigned char *buffer)
-{
- if (strncmp(buffer, "ID3", 3) == 0) {
- unsigned long tagsize;
-
- /* high bit is not used */
- tagsize = (buffer[6] << 21) | (buffer[7] << 14) |
- (buffer[8] << 7) | (buffer[9] << 0);
-
- tagsize += 10;
-
- return tagsize;
- } else {
- return 0;
- }
-}
-
-char *file_ext[] =
-{
- NULL,
- ".wav",
- ".aif",
- ".au",
- ".au",
- NULL
-};
-
-/* MicroSoft channel definitions */
-#define SPEAKER_FRONT_LEFT 0x1
-#define SPEAKER_FRONT_RIGHT 0x2
-#define SPEAKER_FRONT_CENTER 0x4
-#define SPEAKER_LOW_FREQUENCY 0x8
-#define SPEAKER_BACK_LEFT 0x10
-#define SPEAKER_BACK_RIGHT 0x20
-#define SPEAKER_FRONT_LEFT_OF_CENTER 0x40
-#define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
-#define SPEAKER_BACK_CENTER 0x100
-#define SPEAKER_SIDE_LEFT 0x200
-#define SPEAKER_SIDE_RIGHT 0x400
-#define SPEAKER_TOP_CENTER 0x800
-#define SPEAKER_TOP_FRONT_LEFT 0x1000
-#define SPEAKER_TOP_FRONT_CENTER 0x2000
-#define SPEAKER_TOP_FRONT_RIGHT 0x4000
-#define SPEAKER_TOP_BACK_LEFT 0x8000
-#define SPEAKER_TOP_BACK_CENTER 0x10000
-#define SPEAKER_TOP_BACK_RIGHT 0x20000
-#define SPEAKER_RESERVED 0x80000000
-
-long aacChannelConfig2wavexChannelMask(NeAACDecFrameInfo *hInfo)
-{
- if (hInfo->channels == 6 && hInfo->num_lfe_channels)
- {
- return SPEAKER_FRONT_LEFT + SPEAKER_FRONT_RIGHT +
- SPEAKER_FRONT_CENTER + SPEAKER_LOW_FREQUENCY +
- SPEAKER_BACK_LEFT + SPEAKER_BACK_RIGHT;
- } else {
- return 0;
- }
-}
-
-int decodeAACfile(char *sndfile, int def_srate, aac_dec_opt *opt)
-{
- int tagsize;
- unsigned long samplerate;
- unsigned char channels;
- void *sample_buffer;
-
- FILE *infile;
-
- audio_file *aufile;
-
- NeAACDecHandle hDecoder;
- NeAACDecFrameInfo frameInfo;
- NeAACDecConfigurationPtr config;
-
- int first_time = 1;
-
-
- /* declare variables for buffering */
- DEC_BUFF_VARS
-
- infile = fopen(opt->filename, "rb");
- if (infile == NULL)
- {
- /* unable to open file */
- error_handler("Error opening file: %s\n", opt->filename);
- return 1;
- }
- INIT_BUFF(infile)
-
- tagsize = id3v2_tag(buffer);
- if (tagsize)
- {
- UPDATE_BUFF_SKIP(tagsize)
- }
-
- hDecoder = NeAACDecOpen();
-
- /* Set the default object type and samplerate */
- /* This is useful for RAW AAC files */
- config = NeAACDecGetCurrentConfiguration(hDecoder);
- if (def_srate)
- config->defSampleRate = def_srate;
- config->defObjectType = opt->object_type;
- config->outputFormat = opt->output_format;
-
- NeAACDecSetConfiguration(hDecoder, config);
-
- if ((bytesconsumed = NeAACDecInit(hDecoder, buffer, bytes_in_buffer,
- &samplerate, &channels)) < 0)
- {
- /* If some error initializing occured, skip the file */
- error_handler("Error initializing decoder library.\n");
- END_BUFF
- NeAACDecClose(hDecoder);
- fclose(infile);
- return 1;
- }
- buffer_index += bytesconsumed;
-
- do
- {
- /* update buffer */
- UPDATE_BUFF_READ
-
- sample_buffer = NeAACDecDecode(hDecoder, &frameInfo, buffer, bytes_in_buffer);
-
- /* update buffer indices */
- UPDATE_BUFF_IDX(frameInfo)
-
- if (frameInfo.error > 0)
- {
- error_handler("Error: %s\n",
- NeAACDecGetErrorMessage(frameInfo.error));
- }
-
- opt->progress_update((long)fileread, buffer_index);
-
- /* open the sound file now that the number of channels are known */
- if (first_time && !frameInfo.error)
- {
- if(opt->decode_mode == 0)
- {
- if (Set_WIN_Params (INVALID_FILEDESC, samplerate, SAMPLE_SIZE,
- frameInfo.channels) < 0)
- {
- error_handler("\nCan't access %s\n", "WAVE OUT");
- END_BUFF
- NeAACDecClose(hDecoder);
- fclose(infile);
- return (0);
- }
- }
- else
- {
- aufile = open_audio_file(sndfile, samplerate, frameInfo.channels,
- opt->output_format, opt->file_type, aacChannelConfig2wavexChannelMask(&frameInfo));
-
- if (aufile == NULL)
- {
- END_BUFF
- NeAACDecClose(hDecoder);
- fclose(infile);
- return 0;
- }
- }
- first_time = 0;
- }
-
- if ((frameInfo.error == 0) && (frameInfo.samples > 0))
- {
- if(opt->decode_mode == 0)
- WIN_Play_Samples((short*)sample_buffer, frameInfo.channels*frameInfo.samples);
- else
- write_audio_file(aufile, sample_buffer, frameInfo.samples, 0);
- }
-
- if (buffer_index >= fileread)
- sample_buffer = NULL; /* to make sure it stops now */
-
- if(stop_decoding)
- break;
-
- } while (sample_buffer != NULL);
-
- NeAACDecClose(hDecoder);
-
- fclose(infile);
-
- if(opt->decode_mode == 0)
- WIN_Audio_close();
- else
- {
- if (!first_time)
- close_audio_file(aufile);
- }
-
- END_BUFF
-
- return frameInfo.error;
-}
-
-int GetAACTrack(mp4ff_t *infile)
-{
- /* find AAC track */
- int i, rc;
- int numTracks = mp4ff_total_tracks(infile);
-
- for (i = 0; i < numTracks; i++)
- {
- unsigned char *buff = NULL;
- int buff_size = 0;
- mp4AudioSpecificConfig mp4ASC;
-
- mp4ff_get_decoder_config(infile, i, &buff, &buff_size);
-
- if (buff)
- {
- rc = NeAACDecAudioSpecificConfig(buff, buff_size, &mp4ASC);
- free(buff);
-
- if (rc < 0)
- continue;
- return i;
- }
- }
-
- /* can't decode this */
- return -1;
-}
-
-unsigned long srates[] =
-{
- 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000,
- 12000, 11025, 8000
-};
-
-uint32_t read_callback(void *user_data, void *buffer, uint32_t length)
-{
- return fread(buffer, 1, length, (FILE*)user_data);
-}
-
-uint32_t seek_callback(void *user_data, uint64_t position)
-{
- return fseek((FILE*)user_data, position, SEEK_SET);
-}
-
-int decodeMP4file(char *sndfile, aac_dec_opt *opt)
-{
- int track;
- unsigned long samplerate;
- unsigned char channels;
- void *sample_buffer;
-
- mp4ff_t *infile;
- FILE *mp4File;
- int sampleId, numSamples;
-
- audio_file *aufile;
-
- NeAACDecHandle hDecoder;
- NeAACDecFrameInfo frameInfo;
-
- unsigned char *buffer;
- int buffer_size;
-
- int first_time = 1;
-
- /* initialise the callback structure */
- mp4ff_callback_t *mp4cb = malloc(sizeof(mp4ff_callback_t));
-
- mp4File = fopen(opt->filename, "rb");
- mp4cb->read = read_callback;
- mp4cb->seek = seek_callback;
- mp4cb->user_data = mp4File;
-
- infile = mp4ff_open_read(mp4cb);
- if (!infile)
- {
- /* unable to open file */
- error_handler("Error opening file: %s\n", opt->filename);
- return 1;
- }
-
- if ((track = GetAACTrack(infile)) < 0)
- {
- error_handler("Unable to find correct AAC sound track in the MP4 file.\n");
- mp4ff_close(infile);
- free(mp4cb);
- fclose(mp4File);
- return 1;
- }
-
- buffer = NULL;
- buffer_size = 0;
- mp4ff_get_decoder_config(infile, track, &buffer, &buffer_size);
-
- hDecoder = NeAACDecOpen();
-
- if(NeAACDecInit2(hDecoder, buffer, buffer_size, &samplerate, &channels) < 0)
- {
- /* If some error initializing occured, skip the file */
- error_handler("Error initializing decoder library.\n");
- NeAACDecClose(hDecoder);
- mp4ff_close(infile);
- free(mp4cb);
- fclose(mp4File);
- return 1;
- }
- if (buffer)
- free(buffer);
-
- numSamples = mp4ff_num_samples(infile, track);
-
- for (sampleId = 0; sampleId < numSamples; sampleId++)
- {
- int rc;
-
- /* get access unit from MP4 file */
- buffer = NULL;
- buffer_size = 0;
-
- rc = mp4ff_read_sample(infile, track, sampleId, &buffer, &buffer_size);
- if (rc == 0)
- {
- error_handler("Reading from MP4 file failed.\n");
- NeAACDecClose(hDecoder);
- mp4ff_close(infile);
- free(mp4cb);
- fclose(mp4File);
- return 1;
- }
-
- sample_buffer = NeAACDecDecode(hDecoder, &frameInfo, buffer, buffer_size);
-
- if (buffer)
- free(buffer);
-
- opt->progress_update((long)numSamples, sampleId);
-
- /* open the sound file now that the number of channels are known */
- if (first_time && !frameInfo.error)
- {
- if(opt->decode_mode == 0)
- {
- if (Set_WIN_Params (INVALID_FILEDESC, samplerate, SAMPLE_SIZE,
- frameInfo.channels) < 0)
- {
- error_handler("\nCan't access %s\n", "WAVE OUT");
- NeAACDecClose(hDecoder);
- mp4ff_close(infile);
- free(mp4cb);
- fclose(mp4File);
- return (0);
- }
- }
- else
- {
- aufile = open_audio_file(sndfile, samplerate, frameInfo.channels,
- opt->output_format, opt->file_type, aacChannelConfig2wavexChannelMask(&frameInfo));
-
- if (aufile == NULL)
- {
- NeAACDecClose(hDecoder);
- mp4ff_close(infile);
- free(mp4cb);
- fclose(mp4File);
- return 0;
- }
- }
- first_time = 0;
- }
-
- if ((frameInfo.error == 0) && (frameInfo.samples > 0))
- {
- if(opt->decode_mode == 0)
- WIN_Play_Samples((short*)sample_buffer, frameInfo.channels*frameInfo.samples);
- else
- write_audio_file(aufile, sample_buffer, frameInfo.samples, 0);
- }
-
- if (frameInfo.error > 0)
- {
- error_handler("Error: %s\n",
- NeAACDecGetErrorMessage(frameInfo.error));
- break;
- }
- if(stop_decoding)
- break;
- }
-
-
- NeAACDecClose(hDecoder);
-
-
- mp4ff_close(infile);
- free(mp4cb);
- fclose(mp4File);
-
- if(opt->decode_mode == 0)
- WIN_Audio_close();
- else
- {
- if (!first_time)
- close_audio_file(aufile);
- }
-
- return frameInfo.error;
-}
-
-int str_no_case_comp(char const *str1, char const *str2, unsigned long len)
-{
- signed int c1 = 0, c2 = 0;
-
- while (len--)
- {
- c1 = tolower(*str1++);
- c2 = tolower(*str2++);
-
- if (c1 == 0 || c1 != c2)
- break;
- }
-
- return c1 - c2;
-}
-
-int aac_decode(aac_dec_opt *opt)
-{
- int result;
- int def_srate = 0;
- int outfile_set = 0;
- int mp4file = 0;
- char *fnp;
- char audioFileName[MAX_PATH];
- unsigned char header[8];
- FILE *hMP4File;
-
-
- /* point to the specified file name */
- strcpy(audioFileName, opt->filename);
- fnp = (char *)strrchr(audioFileName,'.');
- if (fnp)
- fnp[0] = '\0';
- strcat(audioFileName, file_ext[opt->file_type]);
-
- mp4file = 0;
- hMP4File = fopen(opt->filename, "rb");
- if (!hMP4File)
- {
- return 1;
- }
- fread(header, 1, 8, hMP4File);
- fclose(hMP4File);
- if (header[4] == 'f' && header[5] == 't' && header[6] == 'y' && header[7] == 'p')
- mp4file = 1;
-
- if (mp4file)
- {
- result = decodeMP4file(audioFileName, opt);
- }
- else
- {
- result = decodeAACfile(audioFileName, def_srate, opt);
- }
-
- return 0;
-}
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