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/*
Copyright (C) 2000 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#ifndef __playlist_file_buffer_h__
#define __playlist_file_buffer_h__
// darwin supports 64 by default and doesn't provide wrapper functions.
#if defined (__APPLE__)
typedef off_t off64_t;
#define open64 open
#define close64 close
#define lseek64 lseek
#define pread64 pread
#define pwrite64 pwrite
#endif
#include <vector>
#include <string>
#include <ardour/source.h>
struct tm;
using std::string;
namespace ARDOUR {
class FileSource : public Source {
public:
enum SampleFormat
{
FormatFloat = 0,
FormatInt24
};
FileSource (string path, jack_nframes_t rate, bool repair_first = false, SampleFormat samp_format=FormatFloat);
FileSource (const XMLNode&, jack_nframes_t rate);
~FileSource ();
int set_name (std::string str, bool destructive);
void set_allow_remove_if_empty (bool yn);
jack_nframes_t length() const { return _length; }
jack_nframes_t read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const;
jack_nframes_t write (Sample *src, jack_nframes_t cnt, char * workbuf);
void mark_for_remove();
string peak_path(string audio_path);
string path() const { return _path; }
virtual int seek (jack_nframes_t frame) {return 0; }
virtual jack_nframes_t last_capture_start_frame() const { return 0; }
virtual void mark_capture_start (jack_nframes_t) {}
virtual void mark_capture_end () {}
virtual void clear_capture_marks() {}
int update_header (jack_nframes_t when, struct tm&, time_t);
int move_to_trash (const string trash_dir_name);
static bool is_empty (string path);
void mark_streaming_write_completed ();
void mark_take (string);
string take_id() const { return _take_id; }
static void set_bwf_country_code (string x);
static void set_bwf_organization_code (string x);
static void set_bwf_serial_number (int);
static void set_search_path (string);
protected:
int fd;
string _path;
bool remove_at_unref;
bool is_bwf;
off64_t data_offset;
string _take_id;
SampleFormat _sample_format;
int _sample_size;
bool allow_remove_if_empty;
static char bwf_country_code[3];
static char bwf_organization_code[4];
static char bwf_serial_number[13];
struct GenericChunk {
char id[4];
int32_t size;
};
struct WAVEChunk : public GenericChunk {
char text[4]; /* wave pseudo-chunk id "WAVE" */
};
struct FMTChunk : public GenericChunk {
int16_t formatTag; /* format tag; currently pcm */
int16_t nChannels; /* number of channels */
uint32_t nSamplesPerSec; /* sample rate in hz */
int32_t nAvgBytesPerSec; /* average bytes per second */
int16_t nBlockAlign; /* number of bytes per sample */
int16_t nBitsPerSample; /* number of bits in a sample */
};
struct BroadcastChunk : public GenericChunk {
char description[256];
char originator[32];
char originator_reference[32];
char origination_date[10];
char origination_time[8];
int32_t time_reference_low;
int32_t time_reference_high;
int16_t version; /* 1.0 because we have umid and 190 bytes of "reserved" */
char umid[64];
char reserved[190];
/* we don't treat coding history as part of the struct */
};
struct ChunkInfo {
string name;
uint32_t size;
off64_t offset;
ChunkInfo (string s, uint32_t sz, off64_t o)
: name (s), size (sz), offset (o) {}
};
vector<ChunkInfo> chunk_info;
struct {
WAVEChunk wave;
FMTChunk format;
GenericChunk data;
BroadcastChunk bext;
vector<string> coding_history;
bool bigendian;
} header;
int init (string, bool must_exist, jack_nframes_t);
jack_nframes_t read_unlocked (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const;
ssize_t file_write (Sample *src, jack_nframes_t framepos, jack_nframes_t cnt, char * workbuf) {
switch (_sample_format) {
case FormatInt24: return write_pcm_24(src, framepos, cnt, workbuf);
default: return write_float(src, framepos, cnt, workbuf);
};
}
ssize_t file_read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const {
switch (_sample_format) {
case FormatInt24: return read_pcm_24(dst, start, cnt, workbuf);
default: return read_float(dst, start, cnt, workbuf);
};
}
ssize_t write_float(Sample *src, jack_nframes_t framepos, jack_nframes_t cnt, char * workbuf);
ssize_t read_float (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const;
ssize_t write_pcm_24(Sample *src, jack_nframes_t framepos, jack_nframes_t cnt, char * workbuf);
ssize_t read_pcm_24 (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const;
int discover_chunks (bool silent);
ChunkInfo* lookup_chunk (string name);
int write_header ();
int read_header (bool silent);
int check_header (jack_nframes_t rate, bool silent);
int fill_header (jack_nframes_t rate);
int read_broadcast_data (ChunkInfo&);
void compute_header_size ();
static const int32_t wave_header_size = sizeof (WAVEChunk) + sizeof (FMTChunk) + sizeof (GenericChunk);
static const int32_t bwf_header_size = wave_header_size + sizeof (BroadcastChunk);
static string search_path;
int repair (string, jack_nframes_t);
void swap_endian (GenericChunk & chunk) const;
void swap_endian (FMTChunk & chunk) const;
void swap_endian (BroadcastChunk & chunk) const;
void swap_endian (Sample *buf, jack_nframes_t cnt) const;
};
}
#endif /* __playlist_file_buffer_h__ */
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