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/xbmc/cores/paplayer/vgmstream/src/meta/ps2_npsf.c

http://github.com/elan/plex
C | 70 lines | 43 code | 17 blank | 10 comment | 8 complexity | 9a5f48bac4089a5565229cdaddfe7962 MD5 | raw file
Possible License(s): LGPL-2.0, LGPL-3.0, CC-BY-SA-3.0, 0BSD, LGPL-2.1, GPL-3.0, BSD-3-Clause, CC0-1.0, Unlicense, GPL-2.0, AGPL-1.0 
    

  1. #include "meta.h"
    2. 

  2. #include "../util.h"
    3. 

  3. 

  4. /* Sony .ADS with SShd & SSbd Headers */
    5. 

  5. 

  6. VGMSTREAM * init_vgmstream_ps2_npsf(STREAMFILE *streamFile) {
    7. 

  7.     VGMSTREAM * vgmstream = NULL;
    8. 

  8.     char filename[260];
    9. 

  9. 

  10.     int loop_flag=0;
    11. 

  11. 	int channel_count;
    12. 

  12.     off_t start_offset;
    13. 

  13.     int i;
    14. 

  14. 

  15.     /* check extension, case insensitive */
    16. 

  16.     streamFile->get_name(streamFile,filename,sizeof(filename));
    17. 

  17.     if (strcasecmp("npsf",filename_extension(filename))) goto fail;
    18. 

  18. 

  19.     /* check NPSF Header */
    20. 

  20.     if (read_32bitBE(0x00,streamFile) != 0x4E505346)
    21. 

  21.         goto fail;
    22. 

  22. 

  23. 	/* check loop */
    24. 

  24. 	loop_flag = (read_32bitLE(0x14,streamFile)!=0xFFFFFFFF);
    25. 

  25.     channel_count=read_32bitLE(0x0C,streamFile);
    26. 

  26.     
    27. 

  27. 	/* build the VGMSTREAM */
    28. 

  28.     vgmstream = allocate_vgmstream(channel_count,loop_flag);
    29. 

  29.     if (!vgmstream) goto fail;
    30. 

  30. 

  31. 	/* fill in the vital statistics */
    32. 

  32. 	vgmstream->channels = read_32bitLE(0x0C,streamFile);
    33. 

  33.     vgmstream->sample_rate = read_32bitLE(0x18,streamFile);
    34. 

  34. 

  35. 	/* Check for Compression Scheme */
    36. 

  36. 	vgmstream->coding_type = coding_PSX;
    37. 

  37.     vgmstream->num_samples = read_32bitLE(0x08,streamFile)*28/16;
    38. 

  38. 

  39. 	/* Get loop point values */
    40. 

  40. 	if(vgmstream->loop_flag) {
    41. 

  41. 		vgmstream->loop_start_sample = read_32bitLE(0x14,streamFile);
    42. 

  42. 		vgmstream->loop_end_sample = read_32bitLE(0x08,streamFile)*28/16;
    43. 

  43. 	}
    44. 

  44. 

  45. 	vgmstream->interleave_block_size = read_32bitLE(0x04,streamFile)/2;
    46. 

  46.     vgmstream->layout_type = layout_interleave;
    47. 

  47.     vgmstream->meta_type = meta_PS2_NPSF;
    48. 

  48. 

  49. 	start_offset = (off_t)read_32bitLE(0x10,streamFile);
    50. 

  50. 

  51.     /* open the file for reading by each channel */
    52. 

  52.     {
    53. 

  53.         for (i=0;i<channel_count;i++) {
    54. 

  54.             vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,0x8000);
    55. 

  55. 

  56.             if (!vgmstream->ch[i].streamfile) goto fail;
    57. 

  57. 

  58.             vgmstream->ch[i].channel_start_offset=
    59. 

  59.                 vgmstream->ch[i].offset=
    60. 

  60.                 (off_t)(start_offset+vgmstream->interleave_block_size*i);
    61. 

  61.         }
    62. 

  62.     }
    63. 

  63. 

  64.     return vgmstream;
    65. 

  65. 

  66.     /* clean up anything we may have opened */
    67. 

  67. fail:
    68. 

  68.     if (vgmstream) close_vgmstream(vgmstream);
    69. 

  69.     return NULL;
    70. 

  70. }
    71. 

  71.