diff options
| -rw-r--r-- | engines/sci/sfx/mixer/dc.cpp | 314 | ||||
| -rw-r--r-- | engines/sci/sfx/mixer/mixers.cpp | 7 |
2 files changed, 0 insertions, 321 deletions
diff --git a/engines/sci/sfx/mixer/dc.cpp b/engines/sci/sfx/mixer/dc.cpp deleted file mode 100644 index eb68b210e9..0000000000 --- a/engines/sci/sfx/mixer/dc.cpp +++ /dev/null @@ -1,314 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - */ - -#include "../mixer.h" -#include <sci_memory.h> -#include <dc/sound/sound.h> -#include <stream.h> -#include <sys/queue.h> - -#define FEED_MODE_ALIVE 0 -#define FEED_MODE_IDLE 1 -#define FEED_MODE_DIEING 2 -#define FEED_MODE_DEAD 3 -#define FEED_MODE_RESTART 4 - -typedef struct feed_state { - /* Queue entry. */ - TAILQ_ENTRY(feed_state) entry; - - /* Whether feed is alive or dead. */ - int mode; - - /* Blank gap in frames. */ - int gap; - - /* Stream handle. */ - snd_stream_hnd_t handle; - - /* Feed. */ - sfx_pcm_feed_t *feed; - - /* Timestamp of next frame requested by stream driver. */ - sfx_timestamp_t time; -} feed_state_t; - -TAILQ_HEAD(feed_list, feed_state) feeds; - -/* Buffer size in samples. */ -#define BUF_SIZE 0x4000 - -static char buf[BUF_SIZE * 2]; - -static feed_state_t * -find_feed_state(snd_stream_hnd_t hnd) { - feed_state_t *state; - TAILQ_FOREACH(state, &feeds, entry) { - if (state->handle == hnd) - return state; - } - - return NULL; -} - -static void -query_timestamp(feed_state_t *state) { - sfx_pcm_feed_t *feed = state->feed; - - if (feed->get_timestamp) { - sfx_timestamp_t stamp; - int val = feed->get_timestamp(feed, &stamp); - - switch (val) { - case PCM_FEED_TIMESTAMP: - state->gap = sfx_timestamp_frame_diff(stamp, state->time); - - if (state->gap >= 0) - state->mode = FEED_MODE_ALIVE; - else { - long secs, usecs; - - state->mode = FEED_MODE_RESTART; - sci_gettime(&secs, &usecs); - state->time = sfx_new_timestamp(secs, usecs, feed->conf.rate); - state->gap = sfx_timestamp_frame_diff(stamp, state->time); - - if (state->gap < 0) - state->gap = 0; - } - break; - case PCM_FEED_IDLE: - state->mode = FEED_MODE_IDLE; - break; - case PCM_FEED_EMPTY: - state->mode = FEED_MODE_DIEING; - state->gap = BUF_SIZE; - } - } else { - state->mode = FEED_MODE_DIEING; - state->gap = BUF_SIZE; - } -} - -void -U8_to_S16(char *buf, int frames, int stereo) { - int samples = frames * (stereo ? 2 : 1); - int i; - - for (i = samples - 1; i >= 0; i--) { - buf[i * 2 + 1] = (unsigned char) buf[i] - 128; - buf[i * 2] = 0; - } -} - -static void * -callback(snd_stream_hnd_t hnd, sfx_timestamp_t timestamp, int bytes_req, int *bytes_recv) { - feed_state_t *state = find_feed_state(hnd); - sfx_pcm_feed_t *feed; - int channels, frames_req; - int frames_recv = 0; - - assert(state); - - state->time = timestamp; - feed = state->feed; - channels = feed->conf.stereo == SFX_PCM_MONO ? 1 : 2; - frames_req = bytes_req / 2 / channels; - - while (frames_req != frames_recv) { - int frames_left = frames_req - frames_recv; - char *buf_pos = buf + frames_recv * channels * 2; - - if (state->mode == FEED_MODE_IDLE) - query_timestamp(state); - - if (state->mode == FEED_MODE_IDLE) { - memset(buf_pos, 0, frames_left * channels * 2); - - state->time = sfx_timestamp_add(state->time, frames_left); - break; - } - - if (state->gap) { - int frames = state->gap; - - if (frames > frames_left) - frames = frames_left; - - memset(buf_pos, 0, frames * channels * 2); - - state->gap -= frames; - frames_recv += frames; - state->time = sfx_timestamp_add(state->time, frames); - if (!state->gap && state->mode == FEED_MODE_DIEING) { - state->mode = FEED_MODE_DEAD; - break; - } - } else { - int frames = feed->poll(feed, buf_pos, frames_left); - - if (feed->conf.format == SFX_PCM_FORMAT_U8) - U8_to_S16(buf_pos, frames, feed->conf.stereo != SFX_PCM_MONO); - - frames_recv += frames; - state->time = sfx_timestamp_add(state->time, frames); - - if (frames < frames_left) - query_timestamp(state); - } - } - - *bytes_recv = bytes_req; - return buf; -} - -static int -mix_init(sfx_pcm_mixer_t *self, sfx_pcm_device_t *device) { - if (snd_stream_init() < 0) { - fprintf(stderr, "[dc-mixer] Failed to initialize streaming sound driver\n"); - return SFX_ERROR; - } - - TAILQ_INIT(&feeds); - - return SFX_OK; -} - -static void -mix_subscribe(sfx_pcm_mixer_t *self, sfx_pcm_feed_t *feed) { - feed_state_t *state = sci_malloc(sizeof(feed_state_t)); - long secs, usecs; - - if ((feed->conf.format != SFX_PCM_FORMAT_S16_LE) && - (feed->conf.format != SFX_PCM_FORMAT_U8)) { - fprintf(stderr, "[dc-mixer] Unsupported feed format\n"); - feed->destroy(feed); - return; - } - - state->handle = snd_stream_alloc(callback, BUF_SIZE); - - if (state->handle == SND_STREAM_INVALID) { - fprintf(stderr, "[dc-mixer] Failed to allocate stream handle\n"); - feed->destroy(feed); - return; - } - - feed->frame_size = SFX_PCM_FRAME_SIZE(feed->conf); - state->mode = FEED_MODE_ALIVE; - state->feed = feed; - state->gap = 0; - - TAILQ_INSERT_TAIL(&feeds, state, entry); - - sci_gettime(&secs, &usecs); - state->time = sfx_new_timestamp(secs, usecs, feed->conf.rate); - snd_stream_start(state->handle, feed->conf.rate, - feed->conf.stereo != SFX_PCM_MONO); -} - -static void -mix_exit(sfx_pcm_mixer_t *self) { - snd_stream_shutdown(); -} - -static int -mix_process(sfx_pcm_mixer_t *self) { - feed_state_t *state, *state_next; - - TAILQ_FOREACH(state, &feeds, entry) { - snd_stream_poll(state->handle); - } - - state = TAILQ_FIRST(&feeds); - while (state) { - state_next = TAILQ_NEXT(state, entry); - if (state->mode == FEED_MODE_DEAD) { - snd_stream_stop(state->handle); - snd_stream_destroy(state->handle); - state->feed->destroy(state->feed); - TAILQ_REMOVE(&feeds, state, entry); - } else if (state->mode == FEED_MODE_RESTART) { - snd_stream_stop(state->handle); - snd_stream_start(state->handle, state->feed->conf.rate, - state->feed->conf.stereo != SFX_PCM_MONO); - state->mode = FEED_MODE_ALIVE; - } - state = state_next; - } - - return SFX_OK; -} - -static void -mix_pause(sfx_pcm_mixer_t *self) { -} - -static void -mix_resume(sfx_pcm_mixer_t *self) { -} - -static int -pcm_init(sfx_pcm_device_t *self) { - return SFX_OK; -} - -static void -pcm_exit(sfx_pcm_device_t *self) { -} - -sfx_pcm_device_t sfx_pcm_driver_dc = { - "dc", - "0.1", - - pcm_init, - pcm_exit, - NULL, - NULL, - NULL, - - {0, 0, 0}, - 0, - NULL, - NULL -}; - -sfx_pcm_mixer_t sfx_pcm_mixer_dc = { - "dc", - "0.1", - - mix_init, - mix_exit, - mix_subscribe, - mix_pause, - mix_resume, - mix_process, - - 0, - 0, - NULL, - NULL, - NULL -}; diff --git a/engines/sci/sfx/mixer/mixers.cpp b/engines/sci/sfx/mixer/mixers.cpp index 329bd8a3d3..235e11930f 100644 --- a/engines/sci/sfx/mixer/mixers.cpp +++ b/engines/sci/sfx/mixer/mixers.cpp @@ -28,14 +28,7 @@ extern sfx_pcm_mixer_t sfx_pcm_mixer_soft_linear; -#ifdef __DC__ -extern sfx_pcm_mixer_t sfx_pcm_mixer_dc; -#endif - static sfx_pcm_mixer_t *mixers[] = { -#ifdef __DC__ - &sfx_pcm_mixer_dc, -#endif &sfx_pcm_mixer_soft_linear, NULL }; |