/*************************************************************************** wave.c Code that interfaces Functions to handle loading, creation, recording and playback of wave samples for IO_CASSETTE ****************************************************************************/ #include "emu.h" #include "streams.h" #ifdef MESS #include "messdrv.h" #include "utils.h" #include "devices/cassette.h" #endif #include "wave.h" #define ALWAYS_PLAY_SOUND 0 static STREAM_UPDATE( wave_sound_update ) { #ifdef MESS running_device *image = (running_device *)param; cassette_image *cassette; cassette_state state; double time_index; double duration; stream_sample_t *left_buffer = outputs[0]; stream_sample_t *right_buffer = outputs[1]; int i; state = cassette_get_state(image); state = (cassette_state)(state & (CASSETTE_MASK_UISTATE | CASSETTE_MASK_MOTOR | CASSETTE_MASK_SPEAKER)); if (image_exists(image) && (ALWAYS_PLAY_SOUND || (state == (CASSETTE_PLAY | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED)))) { cassette = cassette_get_image(image); time_index = cassette_get_position(image); duration = ((double) samples) / image->machine->sample_rate; cassette_get_samples(cassette, 0, time_index, duration, samples, 2, left_buffer, CASSETTE_WAVEFORM_16BIT); cassette_get_samples(cassette, 1, time_index, duration, samples, 2, right_buffer, CASSETTE_WAVEFORM_16BIT); for (i = samples - 1; i >= 0; i--) { left_buffer[i] = ((INT16 *) left_buffer)[i]; right_buffer[i] = ((INT16 *) right_buffer)[i]; } } else { memset(left_buffer, 0, sizeof(*left_buffer) * samples); memset(right_buffer, 0, sizeof(*right_buffer) * samples); } #endif } static DEVICE_START( wave ) { running_device *image = NULL; assert( device != NULL ); assert( device->baseconfig().static_config() != NULL ); #ifdef MESS image = device->machine->device( (const char *)device->baseconfig().static_config() ); #endif stream_create(device, 0, 2, device->machine->sample_rate, (void *)image, wave_sound_update); } /************************************************************************** * Generic get_info **************************************************************************/ DEVICE_GET_INFO( wave ) { switch (state) { /* --- the following bits of info are returned as 64-bit signed integers --- */ case DEVINFO_INT_TOKEN_BYTES: info->i = 0; break; /* --- the following bits of info are returned as pointers to data or functions --- */ case DEVINFO_FCT_START: info->start = DEVICE_START_NAME( wave ); break; case DEVINFO_FCT_STOP: /* nothing */ break; case DEVINFO_FCT_RESET: /* nothing */ break; /* --- the following bits of info are returned as NULL-terminated strings --- */ case DEVINFO_STR_NAME: strcpy(info->s, "Cassette"); break; case DEVINFO_STR_FAMILY: strcpy(info->s, "Cassette"); break; case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break; case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break; case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright The MESS Team"); break; } }