diff options
Diffstat (limited to 'src/libxineadec/roqaudio.c')
-rw-r--r-- | src/libxineadec/roqaudio.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/src/libxineadec/roqaudio.c b/src/libxineadec/roqaudio.c deleted file mode 100644 index 6bc713a98..000000000 --- a/src/libxineadec/roqaudio.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * Copyright (C) 2000-2003 the xine project - * - * This file is part of xine, a free video player. - * - * xine 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. - * - * xine 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - * - * RoQ DPCM Audio Decoder by Mike Melanson (melanson@pcisys.net) - * For more information regarding the RoQ file format, visit: - * http://www.csse.monash.edu.au/~timf/ - * - * $Id: roqaudio.c,v 1.22 2004/01/12 17:35:18 miguelfreitas Exp $ - * - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdlib.h> -#include <string.h> - -#include "xine_internal.h" -#include "audio_out.h" -#include "buffer.h" -#include "xineutils.h" -#include "bswap.h" - -#define RoQ_AUDIO_SAMPLE_RATE 22050 -#define RoQ_AUDIO_BITS_PER_SAMPLE 16 - -#define AUDIOBUFSIZE 128*1024 - -#define CLAMP_S16(x) if (x < -32768) x = -32768; \ - else if (x > 32767) x = 32767; -#define SE_16BIT(x) if (x & 0x8000) x -= 0x10000; - -typedef struct { - audio_decoder_class_t decoder_class; -} roqaudio_class_t; - -typedef struct roqaudio_decoder_s { - audio_decoder_t audio_decoder; - - xine_stream_t *stream; - - int64_t pts; - - int output_open; - int output_channels; - - unsigned char *buf; - int bufsize; - int size; - - short square_array[256]; -} roqaudio_decoder_t; - -static void roqaudio_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) { - roqaudio_decoder_t *this = (roqaudio_decoder_t *) this_gen; - audio_buffer_t *audio_buffer; - int in, out; - int predictor[2]; - int channel_number = 0; - - if (buf->decoder_flags & BUF_FLAG_STDHEADER) { - this->output_channels = buf->decoder_info[3]; - - this->buf = xine_xmalloc(AUDIOBUFSIZE); - this->bufsize = AUDIOBUFSIZE; - this->size = 0; - - /* stream/meta info */ - _x_meta_info_set(this->stream, XINE_META_INFO_AUDIOCODEC, - "RoQ DPCM Audio"); - - return; - } - - if (!this->output_open) { - this->output_open = this->stream->audio_out->open(this->stream->audio_out, - this->stream, RoQ_AUDIO_BITS_PER_SAMPLE, RoQ_AUDIO_SAMPLE_RATE, - (this->output_channels == 2) ? AO_CAP_MODE_STEREO : AO_CAP_MODE_MONO); - } - - /* if the audio still isn't open, bail */ - if (!this->output_open) - return; - - if( this->size + buf->size > this->bufsize ) { - this->bufsize = this->size + 2 * buf->size; - xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, - "RoQ: increasing source buffer to %d to avoid overflow.\n", this->bufsize); - this->buf = realloc( this->buf, this->bufsize ); - } - - xine_fast_memcpy (&this->buf[this->size], buf->content, buf->size); - this->size += buf->size; - - if (buf->decoder_flags & BUF_FLAG_FRAME_END) { /* time to decode a frame */ - audio_buffer = this->stream->audio_out->get_buffer (this->stream->audio_out); - - out = 0; - - /* prepare the initial predictors */ - if (this->output_channels == 1) - predictor[0] = LE_16(&this->buf[6]); - else - { - predictor[0] = this->buf[7] << 8; - predictor[1] = this->buf[6] << 8; - } - SE_16BIT(predictor[0]); - SE_16BIT(predictor[1]); - - /* decode the samples */ - for (in = 8; in < this->size; in++) - { - predictor[channel_number] += this->square_array[this->buf[in]]; - CLAMP_S16(predictor[channel_number]); - audio_buffer->mem[out++] = predictor[channel_number]; - - /* toggle channel */ - channel_number ^= this->output_channels - 1; - } - - audio_buffer->vpts = buf->pts; - audio_buffer->num_frames = - (buf->size - 8) / this->output_channels; - - this->stream->audio_out->put_buffer (this->stream->audio_out, audio_buffer, this->stream); - - this->size = 0; - } -} - -static void roqaudio_reset (audio_decoder_t *this_gen) { -} - -static void roqaudio_discontinuity (audio_decoder_t *this_gen) { - - roqaudio_decoder_t *this = (roqaudio_decoder_t *) this_gen; - - this->pts = 0; -} - -static void roqaudio_dispose (audio_decoder_t *this_gen) { - - roqaudio_decoder_t *this = (roqaudio_decoder_t *) this_gen; - - if (this->output_open) - this->stream->audio_out->close (this->stream->audio_out, this->stream); - this->output_open = 0; - - if (this->buf) - free(this->buf); - - free (this_gen); -} - -static audio_decoder_t *open_plugin (audio_decoder_class_t *class_gen, xine_stream_t *stream) { - - roqaudio_decoder_t *this; - int i; - short square; - - this = (roqaudio_decoder_t *) xine_xmalloc (sizeof (roqaudio_decoder_t)); - - this->audio_decoder.decode_data = roqaudio_decode_data; - this->audio_decoder.reset = roqaudio_reset; - this->audio_decoder.discontinuity = roqaudio_discontinuity; - this->audio_decoder.dispose = roqaudio_dispose; - this->size = 0; - - this->stream = stream; - - this->buf = NULL; - this->output_open = 0; - this->output_channels = 0; - - /* initialize tables of squares */ - for (i = 0; i < 128; i++) { - square = i * i; - this->square_array[i] = square; - this->square_array[i + 128] = -square; - } - - return &this->audio_decoder; -} - -static char *get_identifier (audio_decoder_class_t *this) { - return "RoQ Audio"; -} - -static char *get_description (audio_decoder_class_t *this) { - return "Id Roq audio decoder plugin"; -} - -static void dispose_class (audio_decoder_class_t *this) { - free (this); -} - -static void *init_plugin (xine_t *xine, void *data) { - - roqaudio_class_t *this; - - this = (roqaudio_class_t *) xine_xmalloc (sizeof (roqaudio_class_t)); - - this->decoder_class.open_plugin = open_plugin; - this->decoder_class.get_identifier = get_identifier; - this->decoder_class.get_description = get_description; - this->decoder_class.dispose = dispose_class; - - return this; -} - -static uint32_t audio_types[] = { - BUF_AUDIO_ROQ, 0 -}; - -static decoder_info_t dec_info_audio = { - audio_types, /* supported types */ - 5 /* priority */ -}; - -plugin_info_t xine_plugin_info[] = { - /* type, API, "name", version, special_info, init_function */ - { PLUGIN_AUDIO_DECODER, 15, "roqaudio", XINE_VERSION_CODE, &dec_info_audio, init_plugin }, - { PLUGIN_NONE, 0, "", 0, NULL, NULL } -}; |