diff options
Diffstat (limited to 'src/demuxers/demux_nsf.c')
| -rw-r--r-- | src/demuxers/demux_nsf.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/src/demuxers/demux_nsf.c b/src/demuxers/demux_nsf.c deleted file mode 100644 index 40aeae9da..000000000 --- a/src/demuxers/demux_nsf.c +++ /dev/null @@ -1,386 +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., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - */ - -/* - * NSF File "Demuxer" by Mike Melanson (melanson@pcisys.net) - * This is really just a loader for NES Music File Format (extension NSF) - * which loads an entire NSF file and passes it over to the NSF audio - * decoder. - * - * After the file is sent over, the demuxer controls the playback by - * sending empty buffers with incrementing pts values. - * - * For more information regarding the NSF format, visit: - * http://www.tripoint.org/kevtris/nes/nsfspec.txt - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#include <string.h> -#include <stdlib.h> - -/********** logging **********/ -#define LOG_MODULE "demux_nsf" -/* #define LOG_VERBOSE */ -/* #define LOG */ - -#include "xine_internal.h" -#include "xineutils.h" -#include "compat.h" -#include "demux.h" -#include "bswap.h" -#include "group_audio.h" - -#define NSF_HEADER_SIZE 0x80 -#define NSF_SAMPLERATE 44100 -#define NSF_BITS 8 -#define NSF_CHANNELS 1 -#define NSF_REFRESH_RATE 60 -#define NSF_PTS_INC (90000 / NSF_REFRESH_RATE) - -typedef struct { - demux_plugin_t demux_plugin; - - xine_stream_t *stream; - fifo_buffer_t *video_fifo; - fifo_buffer_t *audio_fifo; - input_plugin_t *input; - int status; - - int total_songs; - int current_song; - int new_song; /* indicates song change */ - - char *title; - char *artist; - char *copyright; - - off_t filesize; - - int64_t current_pts; - int file_sent; -} demux_nsf_t; - -typedef struct { - demux_class_t demux_class; -} demux_nsf_class_t; - -/* returns 1 if the NSF file was opened successfully, 0 otherwise */ -static int open_nsf_file(demux_nsf_t *this) { - unsigned char header[NSF_HEADER_SIZE]; - - this->input->seek(this->input, 0, SEEK_SET); - if (this->input->read(this->input, header, NSF_HEADER_SIZE) != - NSF_HEADER_SIZE) - return 0; - - /* check for the signature */ - if (memcmp(header, "NESM\x1A", 5) != 0) - return 0; - - this->total_songs = header[6]; - this->current_song = header[7]; - this->title = strndup((char*)&header[0x0E], 0x20); - this->artist = strndup((char*)&header[0x2E], 0x20); - this->copyright = strndup((char*)&header[0x4E], 0x20); - - this->filesize = this->input->get_length(this->input); - - return 1; -} - -static int demux_nsf_send_chunk(demux_plugin_t *this_gen) { - demux_nsf_t *this = (demux_nsf_t *) this_gen; - buf_element_t *buf; - int bytes_read; - char title[100]; - - /* send chunks of the file to the decoder until file is completely - * loaded; then send control buffers */ - if (!this->file_sent) { - buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo); - buf->type = BUF_AUDIO_NSF; - bytes_read = this->input->read(this->input, buf->content, buf->max_size); - - if (bytes_read <= 0) { - /* the file has been completely loaded, free the buffer and start - * sending control buffers */ - buf->free_buffer(buf); - this->file_sent = 1; - - } else { - - /* keep loading the file */ - if (bytes_read < buf->max_size) - buf->size = bytes_read; - else - buf->size = buf->max_size; - - buf->extra_info->input_normpos = 0; - buf->extra_info->input_time = 0; - buf->pts = 0; - - this->audio_fifo->put (this->audio_fifo, buf); - } - } - - /* this is not an 'else' because control might fall through from above */ - if (this->file_sent) { - /* send a control buffer */ - buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo); - - if (this->new_song) { - - buf->decoder_info[1] = this->current_song; - this->new_song = 0; - sprintf(title, "%s, song %d/%d", - this->title, this->current_song, this->total_songs); - - _x_meta_info_set(this->stream, XINE_META_INFO_TITLE, title); - - _x_demux_control_newpts(this->stream, this->current_pts, 0); - - } else - buf->decoder_info[1] = 0; - - buf->type = BUF_AUDIO_NSF; - if(this->total_songs) - buf->extra_info->input_normpos = (this->current_song - 1) * 65535 / this->total_songs; - buf->extra_info->input_time = this->current_pts / 90; - buf->pts = this->current_pts; - buf->size = 0; - this->audio_fifo->put (this->audio_fifo, buf); - - this->current_pts += NSF_PTS_INC; - } - - return this->status; -} - -static void demux_nsf_send_headers(demux_plugin_t *this_gen) { - demux_nsf_t *this = (demux_nsf_t *) this_gen; - buf_element_t *buf; - char copyright[100]; - - this->video_fifo = this->stream->video_fifo; - this->audio_fifo = this->stream->audio_fifo; - - this->status = DEMUX_OK; - - /* load stream information */ - _x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_VIDEO, 0); - _x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_AUDIO, 1); - _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_CHANNELS, - NSF_CHANNELS); - _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_SAMPLERATE, - NSF_SAMPLERATE); - _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_BITS, - NSF_BITS); - - _x_meta_info_set(this->stream, XINE_META_INFO_TITLE, this->title); - _x_meta_info_set(this->stream, XINE_META_INFO_ARTIST, this->artist); - sprintf(copyright, "(C) %s", this->copyright); - _x_meta_info_set(this->stream, XINE_META_INFO_COMMENT, copyright); - - /* send start buffers */ - _x_demux_control_start(this->stream); - - /* send init info to the audio decoder */ - if (this->audio_fifo) { - buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo); - buf->type = BUF_AUDIO_NSF; - buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_FRAME_END; - buf->decoder_info[0] = 5; - buf->decoder_info[1] = NSF_SAMPLERATE; - buf->decoder_info[2] = NSF_BITS; - buf->decoder_info[3] = NSF_CHANNELS; - - /* send the NSF filesize in the body, big endian format */ - buf->content[0] = (this->filesize >> 24) & 0xFF; - buf->content[1] = (this->filesize >> 16) & 0xFF; - buf->content[2] = (this->filesize >> 8) & 0xFF; - buf->content[3] = (this->filesize >> 0) & 0xFF; - /* send the requested song */ - buf->content[4] = this->current_song + 5; - - this->audio_fifo->put (this->audio_fifo, buf); - } -} - -static int demux_nsf_seek (demux_plugin_t *this_gen, - off_t start_pos, int start_time, int playing) { - - demux_nsf_t *this = (demux_nsf_t *) this_gen; - start_pos = (off_t) ( (double) start_pos / 65535 * - this->total_songs ); - - /* if thread is not running, initialize demuxer */ - if( !playing ) { - - /* send new pts */ - _x_demux_control_newpts(this->stream, 0, 0); - - this->status = DEMUX_OK; - - /* reposition stream at the start for loading */ - this->input->seek(this->input, 0, SEEK_SET); - - this->file_sent = 0; - this->current_pts = 0; - this->new_song = 1; - } else { - this->current_song = start_pos + 1; - this->new_song = 1; - this->current_pts = 0; - _x_demux_flush_engine(this->stream); - } - - return this->status; -} - -static void demux_nsf_dispose (demux_plugin_t *this_gen) { - demux_nsf_t *this = (demux_nsf_t *) this_gen; - - free(this->title); - free(this->artist); - free(this->copyright); - free(this); -} - -static int demux_nsf_get_status (demux_plugin_t *this_gen) { - demux_nsf_t *this = (demux_nsf_t *) this_gen; - - return this->status; -} - -/* return the approximate length in miliseconds */ -static int demux_nsf_get_stream_length (demux_plugin_t *this_gen) { - return 0; -} - -static uint32_t demux_nsf_get_capabilities(demux_plugin_t *this_gen) { - return DEMUX_CAP_NOCAP; -} - -static int demux_nsf_get_optional_data(demux_plugin_t *this_gen, - void *data, int data_type) { - return DEMUX_OPTIONAL_UNSUPPORTED; -} - -static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *stream, - input_plugin_t *input) { - - demux_nsf_t *this; - - if (!INPUT_IS_SEEKABLE(input)) { - xprintf(stream->xine, XINE_VERBOSITY_DEBUG, "input not seekable, can not handle!\n"); - return NULL; - } - - this = calloc(1, sizeof(demux_nsf_t)); - this->stream = stream; - this->input = input; - - this->demux_plugin.send_headers = demux_nsf_send_headers; - this->demux_plugin.send_chunk = demux_nsf_send_chunk; - this->demux_plugin.seek = demux_nsf_seek; - this->demux_plugin.dispose = demux_nsf_dispose; - this->demux_plugin.get_status = demux_nsf_get_status; - this->demux_plugin.get_stream_length = demux_nsf_get_stream_length; - this->demux_plugin.get_capabilities = demux_nsf_get_capabilities; - this->demux_plugin.get_optional_data = demux_nsf_get_optional_data; - this->demux_plugin.demux_class = class_gen; - - this->status = DEMUX_FINISHED; - - switch (stream->content_detection_method) { - - case METHOD_BY_EXTENSION: { - const char *extensions, *mrl; - - mrl = input->get_mrl (input); - extensions = class_gen->get_extensions (class_gen); - - if (!_x_demux_check_extension (mrl, extensions)) { - free (this); - return NULL; - } - } - /* falling through is intended */ - - case METHOD_BY_CONTENT: - case METHOD_EXPLICIT: - - if (!open_nsf_file(this)) { - free (this); - return NULL; - } - - break; - - default: - free (this); - return NULL; - } - - return &this->demux_plugin; -} - -static const char *get_description (demux_class_t *this_gen) { - return "NES Music file demux plugin"; -} - -static const char *get_identifier (demux_class_t *this_gen) { - return "NSF"; -} - -static const char *get_extensions (demux_class_t *this_gen) { - return "nsf"; -} - -static const char *get_mimetypes (demux_class_t *this_gen) { - return NULL; -} - -static void class_dispose (demux_class_t *this_gen) { - demux_nsf_class_t *this = (demux_nsf_class_t *) this_gen; - - free (this); -} - -void *demux_nsf_init_plugin (xine_t *xine, void *data) { - demux_nsf_class_t *this; - - this = calloc(1, sizeof(demux_nsf_class_t)); - - this->demux_class.open_plugin = open_plugin; - this->demux_class.get_description = get_description; - this->demux_class.get_identifier = get_identifier; - this->demux_class.get_mimetypes = get_mimetypes; - this->demux_class.get_extensions = get_extensions; - this->demux_class.dispose = class_dispose; - - return this; -} |