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  1. #include "s3sound.h"
  2. #include "audio.h"
  3. #include "backends/backend.h"
  4. #include "harness/hooks.h"
  5. #include "harness/trace.h"
  6. #include "resource.h"
  7. #include <stdio.h>
  8. #include <stdlib.h>
  9. #include <string.h>
  10.  
  11. #define MAX_PATH_LENGTH 1024
  12. extern void dr_dprintf(char* fmt_string, ...);
  13.  
  14. int gS3_sample_filter_funcs_registered;
  15. long gS3_last_file_length;
  16. tS3_sample_filter* gS3_sample_filter_func;
  17. tS3_sample_filter* gS3_sample_filter_disable_func;
  18.  
  19. int S3LoadSample(tS3_sound_id id) {
  20.     // changed by dethrace for compatibility
  21.     // char filename[80]; // [esp+10h] [ebp-5Ch] BYREF
  22.     char filename[MAX_PATH_LENGTH];
  23.     tS3_descriptor* descriptor;
  24.     tS3_sample* sample;
  25.     char* buf;
  26.     // LPDIRECTSOUNDBUFFER dsound_buffer; // win95 only
  27.  
  28.     if (!gS3_enabled) {
  29.         return 0;
  30.     }
  31.     descriptor = S3GetDescriptorByID(id);
  32.     if (!descriptor) {
  33.         return eS3_error_bad_id;
  34.     }
  35.     if (descriptor->type != eS3_ST_sample) {
  36.         return 0;
  37.     }
  38.     if (descriptor->sound_data) {
  39.         return 0;
  40.     }
  41.     filename[0] = 0;
  42.     strcpy(filename, descriptor->filename);
  43.     sample = S3MemAllocate(sizeof(tS3_sample), kMem_S3_sound_header);
  44.     if (!sample) {
  45.         return eS3_error_memory;
  46.     }
  47.  
  48.     memset(sample, 0, sizeof(tS3_sample));
  49.     buf = S3LoadWavFile_DOS(filename);
  50.     if (buf == NULL) {
  51.         S3MemFree(sample);
  52.         return gS3_last_error;
  53.     }
  54.     sample->freeptr = buf;
  55.     if (memcmp(buf, "RIFF", 4) == 0) {
  56.         wav_header* hdr = (wav_header*)buf;
  57.         sample->dataptr = &buf[sizeof(wav_header)];
  58.         sample->size = hdr->data_bytes;
  59.         sample->rate = hdr->sample_rate;
  60.         sample->resolution = hdr->bit_depth;
  61.         sample->channels = hdr->num_channels;
  62.     } else {
  63.         sample->rate = 16000;
  64.         sample->resolution = 8;
  65.         sample->channels = 1;
  66.         sample->dataptr = buf;
  67.         sample->size = gS3_last_file_length;
  68.     }
  69.  
  70.     // win95
  71.     // descriptor->sound_buffer = S3LoadWavFile(filename, sample);
  72.     // if (!descriptor->sound_buffer) {
  73.     //     S3MemFree(sample);
  74.     //     return gS3_last_error;
  75.     // }
  76.     descriptor->special_fx = 0;
  77.     descriptor->sound_data = (char*)sample;
  78.     return eS3_error_none;
  79. }
  80.  
  81. int S3ReadWavHeader_Win95(char* buf, tWAVEFORMATEX_** pWav_format, char** data_ptr, int* pData_size) {
  82.     int riff_len;
  83.     char* file_eof;         // [esp+10h] [ebp-14h]
  84.     unsigned int chunk_len; // [esp+18h] [ebp-Ch]
  85.     char* chunk_data;       // [esp+1Ch] [ebp-8h]
  86.     // char* chunk_name;       // [esp+20h] [ebp-4h]
  87.     char* chunk_ptr;
  88.  
  89.     if (pWav_format) {
  90.         *pWav_format = 0;
  91.     }
  92.     if (data_ptr) {
  93.         *data_ptr = 0;
  94.     }
  95.     if (pData_size) {
  96.         *pData_size = 0;
  97.     }
  98.     chunk_ptr = buf + 12;
  99.     if (buf[0] != 'R' || buf[1] != 'I' || buf[2] != 'F' || buf[3] != 'F') {
  100.         return 0;
  101.     }
  102.     if (buf[8] != 'W' || buf[9] != 'A' || buf[10] != 'V' || buf[11] != 'E') {
  103.         return 0;
  104.     }
  105.     memcpy(&riff_len, &buf[4], sizeof(riff_len)); // (int32_t)buf[4];
  106. #if BR_ENDIAN_BIG
  107.     riff_len = BrSwap32(riff_len);
  108. #endif
  109.     file_eof = &chunk_ptr[riff_len - 4];
  110.     while (file_eof > chunk_ptr) {
  111.         memcpy(&chunk_len, chunk_ptr + 4, sizeof(chunk_len));
  112. #if BR_ENDIAN_BIG
  113.         chunk_len = BrSwap32(chunk_len);
  114. #endif
  115.         chunk_data = chunk_ptr + 8;
  116.         if (strncmp(chunk_ptr, "fmt ", 4) == 0) {
  117.             if (pWav_format && *pWav_format == NULL) {
  118.                 if (chunk_len < 14) {
  119.                     return 0;
  120.                 }
  121.                 *pWav_format = (tWAVEFORMATEX_*)chunk_data;
  122.                 if ((!data_ptr || *data_ptr) && (!pData_size || *pData_size)) {
  123.                     return 1;
  124.                 }
  125.             }
  126.         } else if (strncmp(chunk_ptr, "data", 4) == 0 && ((data_ptr && !*data_ptr) || (pData_size && !*pData_size))) {
  127.             if (data_ptr) {
  128.                 *data_ptr = chunk_data;
  129.             }
  130.             if (pData_size) {
  131.                 *pData_size = chunk_len;
  132.             }
  133.             if (!pWav_format || *pWav_format) {
  134.                 return 1;
  135.             }
  136.         }
  137.         chunk_ptr = &chunk_data[(chunk_len + 1) & 0xFFFFFFFE];
  138.     }
  139.     return 0;
  140. }
  141.  
  142. void* S3LoadWavFile_DOS(char* pFile_name) {
  143.     FILE* f;
  144.     long file_len;
  145.     size_t bytes_read;
  146.     char* buf;
  147.  
  148.     f = Harness_Hook_fopen (pFile_name, "rb");
  149.     if (f == NULL) {
  150.         gS3_last_error = eS3_error_readfile;
  151.         return 0;
  152.     }
  153.     fseek(f, 0, SEEK_END);
  154.     file_len = ftell(f);
  155.     fseek(f, 0, SEEK_SET);
  156.  
  157.     buf = S3MemAllocate(file_len + 1, kMem_S3_sample);
  158.  
  159.     if (buf) {
  160.         bytes_read = fread(buf, 1, file_len, f);
  161.         if (bytes_read == file_len) {
  162.             gS3_last_file_length = file_len;
  163.             fclose(f);
  164.             return buf;
  165.         } else {
  166.             gS3_last_error = 4;
  167.         }
  168.     } else {
  169.         fclose(f);
  170.         gS3_last_error = eS3_error_memory;
  171.     }
  172.     return 0;
  173. }
  174.  
  175. void* S3LoadWavFile_Win95(char* pFile_name, tS3_sample* pSample) {
  176.     FILE* f;           // [esp+Ch] [ebp-C8h]
  177.     size_t bytes_read; // [esp+14h] [ebp-C0h] BYREF
  178.     //  unsigned int locked_buffer_data_len; // [esp+18h] [ebp-BCh] BYREF
  179.     //   struct _OFSTRUCT ReOpenBuff;         // [esp+1Ch] [ebp-B8h] BYREF
  180.     char* buf; // [esp+A4h] [ebp-30h]
  181.     // LPDIRECTSOUNDBUFFER ds_buffer;       // [esp+A8h] [ebp-2Ch] BYREF
  182.     // DSBUFFERDESC buffer_desc;   // [esp+ACh] [ebp-28h] BYREF
  183.     int data_size;              // [esp+C0h] [ebp-14h] BYREF
  184.     tWAVEFORMATEX_* wav_format; // [esp+C4h] [ebp-10h] BYREF
  185.     char* data_ptr;             // [esp+C8h] [ebp-Ch] BYREF
  186.     // char* locked_buffer_data;   // [esp+CCh] [ebp-8h] BYREF
  187.     size_t file_len; // [esp+D0h] [ebp-4h]
  188.  
  189.     f = Harness_Hook_fopen (pFile_name, "rb");
  190.     if (f == NULL) {
  191.         gS3_last_error = eS3_error_readfile;
  192.         return 0;
  193.     }
  194.     fseek(f, 0, SEEK_END);
  195.     file_len = (size_t)ftell(f);
  196.     fseek(f, 0, SEEK_SET);
  197.  
  198.     buf = S3MemAllocate(file_len, kMem_S3_Windows_95_load_WAV_file);
  199.     if (buf == NULL) {
  200.         fclose(f);
  201.         gS3_last_error = eS3_error_memory;
  202.         return 0;
  203.     }
  204.     bytes_read = fread(buf, file_len, 1, f);
  205.     fclose(f);
  206.  
  207.     data_size = 0;
  208.     wav_format = 0;
  209.     data_ptr = 0;
  210.     if (S3ReadWavHeader_Win95(buf, &wav_format, &data_ptr, &data_size) == 0) {
  211.         gS3_last_error = eS3_error_readfile;
  212.         dr_dprintf("ERROR: .WAV file '%s' is crap", pFile_name);
  213.         return 0;
  214.     }
  215.     pSample->freeptr = 0;
  216.     pSample->dataptr = 0;
  217.     pSample->size = data_size;
  218.     pSample->rate = wav_format->nSamplesPerSec;
  219.     pSample->resolution = wav_format->nAvgBytesPerSec;
  220.     pSample->channels = wav_format->nChannels;
  221. #if BR_ENDIAN_BIG
  222.     pSample->rate = BrSwap32(pSample->rate);
  223.     pSample->resolution = BrSwap32(pSample->resolution);
  224.     pSample->channels = BrSwap32(pSample->channels);
  225. #endif
  226.  
  227.     // buffer_desc.dwReserved = 0;
  228.     // buffer_desc.dwSize = 20;
  229.     // buffer_desc.dwFlags = 226;
  230.     // buffer_desc.dwBufferBytes = data_size;
  231.     // buffer_desc.lpwfxFormat = wav_format;
  232.     // if (gS3_direct_sound_ptr->lpVtbl->CreateSoundBuffer(gS3_direct_sound_ptr, &buffer_desc, &ds_buffer, 0)) {
  233.     //     return 0;
  234.     // } else if (ds_buffer->lpVtbl->Lock(
  235.     //                ds_buffer,
  236.     //                0,
  237.     //                data_size,
  238.     //                (LPVOID*)&locked_buffer_data,
  239.     //                &locked_buffer_data_len,
  240.     //                0,
  241.     //                0,
  242.     //                0)) {
  243.     //     return 0;
  244.     // } else {
  245.     //     qmemcpy(locked_buffer_data, data_ptr, locked_buffer_data_len);
  246.     //     S3MemFree(buf);
  247.     //     ds_buffer->lpVtbl->Unlock(ds_buffer, locked_buffer_data, locked_buffer_data_len, 0, 0);
  248.     //     return ds_buffer;
  249.     // }
  250.     return NULL;
  251. }
  252.  
  253. int S3StopSample(tS3_channel* chan) {
  254.     if (chan->tag == 0) {
  255.         return 1;
  256.     }
  257.  
  258.     if (chan->type_struct_sample == NULL) {
  259.         return 0;
  260.     }
  261.  
  262.     AudioBackend_StopSample(chan);
  263.  
  264.     if (chan->active) {
  265.         chan->needs_service = 1;
  266.     }
  267.  
  268.     return 1;
  269. }
  270.  
  271. int S3ExecuteSampleFilterFuncs(tS3_channel* chan) {
  272.     if (((chan->descriptor->special_fx == 0) & gS3_sample_filter_funcs_registered) != 0) {
  273.         gS3_sample_filter_func(1, chan->tag);
  274.         chan->descriptor->special_fx = 1;
  275.     } else if (((gS3_sample_filter_funcs_registered == 0) & chan->descriptor->special_fx) != 0) {
  276.         gS3_sample_filter_disable_func(1, chan->tag);
  277.         chan->descriptor->special_fx = 0;
  278.     }
  279.     return 0;
  280. }
  281.  
  282. int S3PlaySample(tS3_channel* chan) {
  283.  
  284.     if (chan->type_struct_sample == NULL) {
  285.         return 0;
  286.     }
  287.  
  288.     S3SyncSampleVolumeAndPan(chan);
  289.     S3SyncSampleRate(chan);
  290.  
  291.     if (AudioBackend_PlaySample(chan) != eAB_success) {
  292.         return 0;
  293.     }
  294.     // if (chan->descriptor && chan->descriptor->type == chan->type) {
  295.     //     dsound_buffer = chan->descriptor->dsound_buffer;
  296.     //     if (dsound_buffer) {
  297.     //         dsound_buffer->lpVtbl->SetCurrentPosition(dsound_buffer, 0);
  298.     //         play_flags = chan->repetitions == 0; // 1 = DSBPLAY_LOOPING
  299.     //         dsound_buffer->lpVtbl->Play(dsound_buffer, 0, 0, play_flags);
  300.     //         if (!dsound_buffer->lpVtbl->GetStatus(dsound_buffer, (LPDWORD)&status)) {
  301.     //             if ((status & 1) != 0) // DSBSTATUS_PLAYING
  302.     //             {
  303.     //                 dsound_buffer->lpVtbl->SetCurrentPosition(dsound_buffer, 0);
  304.     //             } else {
  305.     //                 dsound_buffer->lpVtbl->Play(dsound_buffer, 0, 0, play_flags);
  306.     //             }
  307.     //         }
  308.     //     }
  309.     //   }
  310.  
  311.     return 1;
  312. }
  313.  
  314. // this function was only called in DOS build
  315. int S3CreateTypeStructs(tS3_channel* chan) {
  316.     void* result;
  317.  
  318.     result = AudioBackend_AllocateSampleTypeStruct();
  319.     if (result == NULL) {
  320.         return 0;
  321.     }
  322.     chan->type_struct_midi = NULL;
  323.     chan->type_struct_cda = NULL;
  324.     chan->type_struct_sample = (char*)result;
  325.     return 1;
  326. }
  327.  
  328. int S3ReleaseTypeStructs(tS3_channel* chan) {
  329.     if (chan->type_struct_sample) {
  330.         S3MemFree(chan->type_struct_sample);
  331.         chan->type_struct_sample = NULL;
  332.     }
  333.     if (chan->type_struct_cda) {
  334.         S3MemFree(chan->type_struct_cda);
  335.         chan->type_struct_cda = NULL;
  336.     }
  337.     return 1;
  338. }
  339.  
  340. int S3SyncSampleVolumeAndPan(tS3_channel* chan) {
  341.  
  342.     float pan_ratio; // [esp+38h] [ebp-8h]
  343.     float total_vol; // [esp+3Ch] [ebp-4h]
  344.  
  345.     int volume_db;
  346.     int pan;
  347.     //float linear_volume; // Pierre-Marie Baty -- unused variable
  348.  
  349.     if (chan->type != eS3_ST_sample) {
  350.         return 1;
  351.     }
  352.     total_vol = (float) (chan->left_volume + chan->right_volume); // Pierre-Marie Baty -- added type cast
  353.     if (total_vol == 0.0f) {
  354.         total_vol = 1.0f;
  355.     }
  356.     if (chan->descriptor && chan->descriptor->type == chan->type) {
  357.         volume_db = (int) (510.0f / total_vol * -5.0f - 350.0f); // Pierre-Marie Baty -- added type cast
  358.         if (volume_db >= 0) {
  359.             volume_db = 0;
  360.         }
  361.  
  362.         if (AudioBackend_SetVolume(chan, volume_db) == eAB_success && chan->spatial_sound) {
  363.  
  364.             if (chan->left_volume != 0 && chan->right_volume > chan->left_volume) {
  365.                 pan_ratio = chan->right_volume / (float)chan->left_volume;
  366.             } else if (chan->right_volume != 0) {
  367.                 pan_ratio = chan->left_volume / (float)chan->right_volume;
  368.             }
  369.             if (chan->left_volume != 0 && chan->right_volume != 0) {
  370.                 pan = (int) ((chan->right_volume - chan->left_volume) * pan_ratio); // Pierre-Marie Baty -- added type cast
  371.                 pan = MAX(pan, -10000);
  372.                 pan = MIN(pan, 10000);
  373.             } else if (chan->left_volume != 0) {
  374.                 pan = -10000;
  375.             } else {
  376.                 pan = 10000;
  377.             }
  378.             AudioBackend_SetPan(chan, pan);
  379.         }
  380.     }
  381.     return 1;
  382. }
  383.  
  384. int S3SyncSampleRate(tS3_channel* chan) {
  385.     if (chan->type != eS3_ST_sample) {
  386.         return 1;
  387.     }
  388.  
  389.     int rate = chan->rate;
  390.     if (rate >= 100000) {
  391.         rate = 100000;
  392.     }
  393.  
  394.     // sound_buffer->lpVtbl->SetFrequency(sound_buffer, rate);
  395.     AudioBackend_SetFrequency(chan, rate);
  396.  
  397.     return 1;
  398. }
  399.  
  400. int S3SetEffects(tS3_sample_filter* filter1, tS3_sample_filter* filter2) {
  401.     STUB_ONCE();
  402.     return 0;
  403. }
  404.