Merge branch 'master' into windows
[ardour.git] / libs / ardour / audiosource.cc
index ec2b912357cfb8d93397cc334c596adf7b79b571..65540d4e3dd153a8b00e9caa9068f36a143ea0bb 100644 (file)
 #include <algorithm>
 #include <vector>
 
+#include <glib.h>
+#include <glib/gstdio.h>
+
+#include <boost/scoped_array.hpp>
+#include <boost/scoped_ptr.hpp>
+
 #include <glibmm/fileutils.h>
 #include <glibmm/miscutils.h>
 
@@ -176,16 +182,16 @@ AudioSource::touch_peakfile ()
 {
        struct stat statbuf;
 
-       if (stat (peakpath.c_str(), &statbuf) != 0 || statbuf.st_size == 0) {
+       if (g_stat (peakpath.c_str(), &statbuf) != 0 || statbuf.st_size == 0) {
                return;
        }
 
        struct utimbuf tbuf;
 
        tbuf.actime = statbuf.st_atime;
-       tbuf.modtime = time ((time_t) 0);
+       tbuf.modtime = time ((time_t*) 0);
 
-       utime (peakpath.c_str(), &tbuf);
+       g_utime (peakpath.c_str(), &tbuf);
 }
 
 int
@@ -196,7 +202,7 @@ AudioSource::rename_peakfile (string newpath)
        string oldpath = peakpath;
 
        if (Glib::file_test (oldpath, Glib::FILE_TEST_EXISTS)) {
-               if (rename (oldpath.c_str(), newpath.c_str()) != 0) {
+               if (g_rename (oldpath.c_str(), newpath.c_str()) != 0) {
                        error << string_compose (_("cannot rename peakfile for %1 from %2 to %3 (%4)"), _name, oldpath, newpath, strerror (errno)) << endmsg;
                        return -1;
                }
@@ -222,7 +228,7 @@ AudioSource::initialize_peakfile (string audio_path)
                peakpath = find_broken_peakfile (peakpath, audio_path);
        }
 
-       if (stat (peakpath.c_str(), &statbuf)) {
+       if (g_stat (peakpath.c_str(), &statbuf)) {
                if (errno != ENOENT) {
                        /* it exists in the peaks dir, but there is some kind of error */
 
@@ -320,11 +326,8 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
        int32_t to_read;
        uint32_t nread;
        framecnt_t zero_fill = 0;
-       int ret = -1;
-       PeakData* staging = 0;
-       Sample* raw_staging = 0;
 
-       FdFileDescriptor* peakfile_descriptor = new FdFileDescriptor (peakpath, false, 0664);
+       boost::scoped_ptr<FdFileDescriptor> peakfile_descriptor(new FdFileDescriptor (peakpath, false, 0664));
        int peakfile_fd = -1;
 
        expected_peaks = (cnt / (double) samples_per_file_peak);
@@ -353,9 +356,9 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                   both max and min peak values.
                */
 
-               Sample* raw_staging = new Sample[cnt];
+               boost::scoped_array<Sample> raw_staging(new Sample[cnt]);
 
-               if (read_unlocked (raw_staging, start, cnt) != cnt) {
+               if (read_unlocked (raw_staging.get(), start, cnt) != cnt) {
                        error << _("cannot read sample data for unscaled peak computation") << endmsg;
                        return -1;
                }
@@ -365,33 +368,35 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                        peaks[i].min = raw_staging[i];
                }
 
-               delete peakfile_descriptor;
-               delete [] raw_staging;
                return 0;
        }
 
        if (scale == 1.0) {
 
+               off_t offset = 0;
                off_t first_peak_byte = (start / samples_per_file_peak) * sizeof (PeakData);
-
+               ssize_t bytes_to_read = sizeof (PeakData)* npeaks;
                /* open, read, close */
 
                if ((peakfile_fd = peakfile_descriptor->allocate ()) < 0) {
                        error << string_compose(_("AudioSource: cannot open peakpath (a) \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
-                       delete peakfile_descriptor;
                        return -1;
                }
 
                DEBUG_TRACE (DEBUG::Peaks, "DIRECT PEAKS\n");
 
-#ifndef WIN32
-               nread = ::pread (peakfile_fd, peaks, sizeof (PeakData)* npeaks, first_peak_byte);
-#endif
+               offset = lseek (peakfile_fd, first_peak_byte, SEEK_SET);
 
-               if (nread != sizeof (PeakData) * npeaks) {
+               if (offset != first_peak_byte) {
+                       error << string_compose(_("AudioSource: could not seek to correct location in peak file \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
+                       return -1;
+               }
+
+               nread = ::read (peakfile_fd, peaks, bytes_to_read);
+
+               if (nread != bytes_to_read) {
                        DEBUG_TRACE (DEBUG::Peaks,  string_compose ("[%1]: Cannot read peaks from peakfile! (read only %2 not %3 at sample %4 = byte %5 )\n"
                             , _name, nread, npeaks, start, first_peak_byte));
-                       delete peakfile_descriptor;
                        return -1;
                }
 
@@ -399,7 +404,6 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                        memset (&peaks[npeaks], 0, sizeof (PeakData) * zero_fill);
                }
 
-               delete peakfile_descriptor;
                return 0;
        }
 
@@ -422,7 +426,7 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
 
                const framecnt_t chunksize = (framecnt_t) min (expected_peaks, 65536.0);
 
-               staging = new PeakData[chunksize];
+               boost::scoped_array<PeakData> staging(new PeakData[chunksize]);
 
                /* compute the rounded up frame position  */
 
@@ -443,8 +447,6 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
 
                if ((peakfile_fd = peakfile_descriptor->allocate ()) < 0) {
                        error << string_compose(_("AudioSource: cannot open peakpath (b) \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
-                       delete peakfile_descriptor;
-                       delete [] staging;
                        return 0;
                }
 
@@ -455,21 +457,27 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                                uint32_t       start_byte = current_stored_peak * sizeof(PeakData);
                                tnp = min ((framecnt_t)(_length/samples_per_file_peak - current_stored_peak), (framecnt_t) expected_peaks);
                                to_read = min (chunksize, tnp);
+                               ssize_t bytes_to_read = sizeof (PeakData) * to_read;
 
                                DEBUG_TRACE (DEBUG::Peaks, string_compose ("reading %1 bytes from peakfile @ %2\n"
-                                               , sizeof (PeakData) * to_read, start_byte));
+                                               , bytes_to_read, start_byte));
+
 
-#ifndef WIN32
-                               if ((nread = ::pread (peakfile_fd, staging, sizeof (PeakData) * to_read, start_byte))
-                                   != sizeof (PeakData) * to_read) {
+                               off_t offset = lseek (peakfile_fd, start_byte, SEEK_SET);
+
+                               if (offset != start_byte) {
+                                       error << string_compose(_("AudioSource: could not seek to correct location in peak file \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
+                                       return -1;
+                               }
+
+                               if ((nread = ::read (peakfile_fd, staging.get(), bytes_to_read)) != bytes_to_read) {
 
                                        off_t fend = lseek (peakfile_fd, 0, SEEK_END);
 
                                        DEBUG_TRACE (DEBUG::Peaks, string_compose ("[%1]: cannot read peak data from peakfile (%2 peaks instead of %3) (%4) at start_byte = %5 _length = %6 versus len = %7 expected maxpeaks = %8 npeaks was %9"
                                             , _name, (nread / sizeof(PeakData)), to_read, g_strerror (errno), start_byte, _length, fend, ((_length - current_frame)/samples_per_file_peak), npeaks));
-                                       goto out;
+                                       return -1;
                                }
-#endif
                                i = 0;
                                stored_peaks_read = nread / sizeof(PeakData);
                        }
@@ -500,8 +508,6 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                        memset (&peaks[npeaks], 0, sizeof (PeakData) * zero_fill);
                }
 
-               ret = 0;
-
        } else {
 
                DEBUG_TRACE (DEBUG::Peaks, "UPSAMPLE\n");
@@ -520,7 +526,7 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                framecnt_t i = 0;
                framecnt_t nvisual_peaks = 0;
                framecnt_t chunksize = (framecnt_t) min (cnt, (framecnt_t) 4096);
-               raw_staging = new Sample[chunksize];
+               boost::scoped_array<Sample> raw_staging(new Sample[chunksize]);
 
                framepos_t frame_pos = start;
                double pixel_pos = floor (frame_pos / samples_per_visual_peak);
@@ -545,18 +551,18 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                                            this loop early
                                        */
 
-                                        memset (raw_staging, 0, sizeof (Sample) * chunksize);
+                                        memset (raw_staging.get(), 0, sizeof (Sample) * chunksize);
 
                                 } else {
 
                                         to_read = min (chunksize, (_length - current_frame));
 
 
-                                        if ((frames_read = read_unlocked (raw_staging, current_frame, to_read)) == 0) {
+                                        if ((frames_read = read_unlocked (raw_staging.get(), current_frame, to_read)) == 0) {
                                                 error << string_compose(_("AudioSource[%1]: peak read - cannot read %2 samples at offset %3 of %4 (%5)"),
                                                                         _name, to_read, current_frame, _length, strerror (errno))
                                                       << endmsg;
-                                                goto out;
+                                                return -1;
                                         }
                                 }
 
@@ -584,26 +590,15 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t
                if (zero_fill) {
                        memset (&peaks[npeaks], 0, sizeof (PeakData) * zero_fill);
                }
-
-               ret = 0;
        }
 
-  out:
-       delete peakfile_descriptor;
-
-       delete [] staging;
-       delete [] raw_staging;
-
        DEBUG_TRACE (DEBUG::Peaks, "READPEAKS DONE\n");
-
-       return ret;
+       return 0;
 }
 
 int
 AudioSource::build_peaks_from_scratch ()
 {
-       Sample* buf = 0;
-
        const framecnt_t bufsize = 65536; // 256kB per disk read for mono data is about ideal
 
        DEBUG_TRACE (DEBUG::Peaks, "Building peaks from scratch\n");
@@ -623,20 +618,20 @@ AudioSource::build_peaks_from_scratch ()
                framecnt_t cnt = _length;
 
                _peaks_built = false;
-               buf = new Sample[bufsize];
+               boost::scoped_array<Sample> buf(new Sample[bufsize]);
 
                while (cnt) {
 
                        framecnt_t frames_to_read = min (bufsize, cnt);
                        framecnt_t frames_read;
                        
-                       if ((frames_read = read_unlocked (buf, current_frame, frames_to_read)) != frames_to_read) {
+                       if ((frames_read = read_unlocked (buf.get(), current_frame, frames_to_read)) != frames_to_read) {
                                error << string_compose(_("%1: could not write read raw data for peak computation (%2)"), _name, strerror (errno)) << endmsg;
                                done_with_peakfile_writes (false);
                                goto out;
                        }
 
-                       if (compute_and_write_peaks (buf, current_frame, frames_read, true, false, _FPP)) {
+                       if (compute_and_write_peaks (buf.get(), current_frame, frames_read, true, false, _FPP)) {
                                break;
                        }
 
@@ -658,11 +653,9 @@ AudioSource::build_peaks_from_scratch ()
   out:
        if (ret) {
                DEBUG_TRACE (DEBUG::Peaks, string_compose("Could not write peak data, attempting to remove peakfile %1\n", peakpath));
-               unlink (peakpath.c_str());
+               ::g_unlink (peakpath.c_str());
        }
 
-       delete [] buf;
-
        return ret;
 }
 
@@ -706,15 +699,13 @@ int
 AudioSource::compute_and_write_peaks (Sample* buf, framecnt_t first_frame, framecnt_t cnt,
                                      bool force, bool intermediate_peaks_ready, framecnt_t fpp)
 {
-       Sample* buf2 = 0;
        framecnt_t to_do;
        uint32_t  peaks_computed;
-       PeakData* peakbuf = 0;
-       int ret = -1;
        framepos_t current_frame;
        framecnt_t frames_done;
        const size_t blocksize = (128 * 1024);
        off_t first_peak_byte;
+       boost::scoped_array<Sample> buf2;
 
        if (_peakfile_descriptor == 0) {
                prepare_for_peakfile_writes ();
@@ -737,12 +728,18 @@ AudioSource::compute_and_write_peaks (Sample* buf, framecnt_t first_frame, frame
 
                        off_t byte = (peak_leftover_frame / fpp) * sizeof (PeakData);
 
-#ifndef WIN32
-                       if (::pwrite (_peakfile_fd, &x, sizeof (PeakData), byte) != sizeof (PeakData)) {
+                       off_t offset = lseek (_peakfile_fd, byte, SEEK_SET);
+
+                       if (offset != byte) {
+                               error << string_compose(_("%1: could not seek in peak file data (%2)"), _name, strerror (errno)) << endmsg;
+                               return -1;
+                       }
+
+                       if (::write (_peakfile_fd, &x, sizeof (PeakData)) != sizeof (PeakData)) {
                                error << string_compose(_("%1: could not write peak file data (%2)"), _name, strerror (errno)) << endmsg;
-                               goto out;
+                               return -1;
                        }
-#endif
+
                        _peak_byte_max = max (_peak_byte_max, (off_t) (byte + sizeof(PeakData)));
 
                        {
@@ -766,19 +763,19 @@ AudioSource::compute_and_write_peaks (Sample* buf, framecnt_t first_frame, frame
                /* make a new contiguous buffer containing leftovers and the new stuff */
 
                to_do = cnt + peak_leftover_cnt;
-               buf2 = new Sample[to_do];
+               buf2.reset(new Sample[to_do]);
 
                /* the remnants */
-               memcpy (buf2, peak_leftovers, peak_leftover_cnt * sizeof (Sample));
+               memcpy (buf2.get(), peak_leftovers, peak_leftover_cnt * sizeof (Sample));
 
                /* the new stuff */
-               memcpy (buf2+peak_leftover_cnt, buf, cnt * sizeof (Sample));
+               memcpy (buf2.get()+peak_leftover_cnt, buf, cnt * sizeof (Sample));
 
                /* no more leftovers */
                peak_leftover_cnt = 0;
 
                /* use the temporary buffer */
-               buf = buf2;
+               buf = buf2.get();
 
                /* make sure that when we write into the peakfile, we startup where we left off */
 
@@ -788,7 +785,7 @@ AudioSource::compute_and_write_peaks (Sample* buf, framecnt_t first_frame, frame
                to_do = cnt;
        }
 
-       peakbuf = new PeakData[(to_do/fpp)+1];
+       boost::scoped_array<PeakData> peakbuf(new PeakData[(to_do/fpp)+1]);
        peaks_computed = 0;
        current_frame = first_frame;
        frames_done = 0;
@@ -852,14 +849,24 @@ AudioSource::compute_and_write_peaks (Sample* buf, framecnt_t first_frame, frame
                }
        }
 
-#ifndef WIN32
-       if (::pwrite (_peakfile_fd, peakbuf, sizeof (PeakData) * peaks_computed, first_peak_byte) != (ssize_t) (sizeof (PeakData) * peaks_computed)) {
+
+       off_t offset = lseek(_peakfile_fd, first_peak_byte, SEEK_SET);
+
+       if (offset != first_peak_byte) {
+               error << string_compose(_("%1: could not seek in peak file data (%2)"), _name, strerror (errno)) << endmsg;
+               return -1;
+       }
+
+       ssize_t bytes_to_write = sizeof (PeakData) * peaks_computed;
+
+       ssize_t bytes_written = ::write (_peakfile_fd, peakbuf.get(), bytes_to_write);
+
+       if (bytes_written != bytes_to_write) {
                error << string_compose(_("%1: could not write peak file data (%2)"), _name, strerror (errno)) << endmsg;
-               goto out;
+               return -1;
        }
-#endif
 
-       _peak_byte_max = max (_peak_byte_max, (off_t) (first_peak_byte + sizeof(PeakData)*peaks_computed));
+       _peak_byte_max = max (_peak_byte_max, (off_t) (first_peak_byte + bytes_to_write));
 
        if (frames_done) {
                Glib::Threads::Mutex::Lock lm (_peaks_ready_lock);
@@ -869,13 +876,7 @@ AudioSource::compute_and_write_peaks (Sample* buf, framecnt_t first_frame, frame
                }
        }
 
-       ret = 0;
-
-  out:
-       delete [] peakbuf;
-       delete [] buf2;
-
-       return ret;
+       return 0;
 }
 
 void