code.delx.au - pulseaudio/blob - polyp/sound-file.c

   1 #include <string.h>
   2 #include <assert.h>
   3
   4 #include <sndfile.h>
   5
   6 #include "sound-file.h"
   7 #include "sample.h"
   8
   9 #define MAX_FILE_SIZE (1024*1024)
  10
  11 int pa_sound_file_load(const char *fname, struct pa_sample_spec *ss, struct pa_memchunk *chunk, struct pa_memblock_stat *s) {
  12     SNDFILE*sf = NULL;
  13     SF_INFO sfinfo;
  14     int ret = -1;
  15     size_t l;
  16     assert(fname && ss && chunk);
  17
  18     memset(&sfinfo, 0, sizeof(sfinfo));
  19
  20     chunk->memblock = NULL;
  21     chunk->index = chunk->length = 0;
  22
  23     if (!(sf = sf_open(fname, SFM_READ, &sfinfo))) {
  24         fprintf(stderr, __FILE__": Failed to open file %s\n", fname);
  25         goto finish;
  26     }
  27
  28     ss->format = PA_SAMPLE_FLOAT32;
  29     ss->rate = sfinfo.samplerate;
  30     ss->channels = sfinfo.channels;
  31
  32     if (!pa_sample_spec_valid(ss)) {
  33         fprintf(stderr, __FILE__": Unsupported sample format in file %s\n", fname);
  34         goto finish;
  35     }
  36
  37     if ((l = pa_frame_size(ss)*sfinfo.frames) > MAX_FILE_SIZE) {
  38         fprintf(stderr, __FILE__": File to large\n");
  39         goto finish;
  40     }
  41
  42     chunk->memblock = pa_memblock_new(l, s);
  43     assert(chunk->memblock);
  44     chunk->index = 0;
  45     chunk->length = l;
  46
  47     if (sf_readf_float(sf, chunk->memblock->data, sfinfo.frames) != sfinfo.frames) {
  48         fprintf(stderr, __FILE__": Premature file end\n");
  49         goto finish;
  50     }
  51
  52     ret = 0;
  53
  54 finish:
  55
  56     if (sf)
  57         sf_close(sf);
  58
  59     if (ret != 0 && chunk->memblock)
  60         pa_memblock_unref(chunk->memblock);
  61
  62     return ret;
  63
  64 }