/*
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/*
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* mad - MPEG audio decoder
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* mad - MPEG audio decoder
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* Copyright (C) 2000-2001 Robert Leslie
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* Copyright (C) 2000-2001 Robert Leslie
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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* $Id: decoder.c,v 1.1.1.1 2001-11-04 19:37:39 lampret Exp $
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* $Id: decoder.c,v 1.1.1.1 2001-11-04 19:37:39 lampret Exp $
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*/
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*/
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# ifdef HAVE_CONFIG_H
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# ifdef HAVE_CONFIG_H
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# include "config.h"
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# include "config.h"
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# endif
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# endif
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# include "global.h"
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# include "global.h"
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# include "stream.h"
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# include "stream.h"
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# include "frame.h"
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# include "frame.h"
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# include "synth.h"
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# include "synth.h"
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# include "decoder.h"
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# include "decoder.h"
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extern int test_button(void);
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extern int test_button(void);
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inline void mad_decoder_init(struct mad_decoder *decoder, void *data,
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inline void mad_decoder_init(struct mad_decoder *decoder, void *data,
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enum mad_flow (*input_func)(void *, struct mad_stream *),
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enum mad_flow (*input_func)(void *, struct mad_stream *),
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enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *frame))
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enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *frame))
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{
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{
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decoder->mode = -1;
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decoder->mode = -1;
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decoder->options = 0;
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decoder->options = 0;
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decoder->sync = 0;
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decoder->sync = 0;
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decoder->cb_data = data;
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decoder->cb_data = data;
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decoder->input_func = input_func;
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decoder->input_func = input_func;
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decoder->error_func = error_func;
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decoder->error_func = error_func;
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}
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}
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inline
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inline
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int mad_decoder_finish(struct mad_decoder *decoder)
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int mad_decoder_finish(struct mad_decoder *decoder)
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{
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{
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return 0;
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return 0;
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}
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}
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/* Both parameters are required. */
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/* Both parameters are required. */
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inline static
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inline static
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int run_sync(struct mad_decoder *decoder)
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int run_sync(struct mad_decoder *decoder)
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{
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{
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enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
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enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
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void *error_data;
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void *error_data;
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int bad_last_frame = 0;
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int bad_last_frame = 0;
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struct mad_stream *stream;
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struct mad_stream *stream;
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struct mad_frame *frame;
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struct mad_frame *frame;
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struct mad_synth *synth;
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struct mad_synth *synth;
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int result = 0;
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int result = 0;
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error_func = decoder->error_func;
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error_func = decoder->error_func;
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error_data = decoder->cb_data;
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error_data = decoder->cb_data;
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stream = &decoder->sync->stream;
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stream = &decoder->sync->stream;
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frame = &decoder->sync->frame;
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frame = &decoder->sync->frame;
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synth = &decoder->sync->synth;
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synth = &decoder->sync->synth;
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mad_stream_init(stream);
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mad_stream_init(stream);
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mad_frame_init(frame);
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mad_frame_init(frame);
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mad_synth_init(synth);
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mad_synth_init(synth);
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mad_stream_options(stream, decoder->options);
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mad_stream_options(stream, decoder->options);
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do {
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do {
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switch (decoder->input_func(decoder->cb_data, stream)) {
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switch (decoder->input_func(decoder->cb_data, stream)) {
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case MAD_FLOW_STOP:
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case MAD_FLOW_STOP:
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goto done;
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goto done;
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case MAD_FLOW_BREAK:
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case MAD_FLOW_BREAK:
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goto fail;
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goto fail;
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case MAD_FLOW_IGNORE:
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case MAD_FLOW_IGNORE:
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continue;
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continue;
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case MAD_FLOW_CONTINUE:
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case MAD_FLOW_CONTINUE:
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break;
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break;
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}
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}
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while (1) {
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while (1) {
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if (mad_frame_decode(frame, stream) == -1) {
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if (mad_frame_decode(frame, stream) == -1) {
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if (!MAD_RECOVERABLE(stream->error))
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if (!MAD_RECOVERABLE(stream->error))
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break;
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break;
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error_func(error_data, stream, frame);
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error_func(error_data, stream, frame);
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goto done;
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goto done;
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}
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}
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else
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else
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bad_last_frame = 0;
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bad_last_frame = 0;
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mad_synth_frame(synth, frame);
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mad_synth_frame(synth, frame);
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if(test_button())
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if(test_button())
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return 1;
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return 1;
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}
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}
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}
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}
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while (stream->error == MAD_ERROR_BUFLEN);
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while (stream->error == MAD_ERROR_BUFLEN);
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fail:
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fail:
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result = -1;
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result = -1;
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done:
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done:
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mad_synth_finish(synth);
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mad_synth_finish(synth);
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mad_frame_finish(frame);
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mad_frame_finish(frame);
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mad_stream_finish(stream);
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mad_stream_finish(stream);
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return result;
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return result;
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}
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}
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inline int mad_decoder_run(struct mad_decoder *decoder, enum mad_decoder_mode mode)
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inline int mad_decoder_run(struct mad_decoder *decoder, enum mad_decoder_mode mode)
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{
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{
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int result;
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int result;
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struct dec_sync_struct sync;
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struct dec_sync_struct sync;
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decoder->sync = &sync;
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decoder->sync = &sync;
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result = run_sync(decoder);
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result = run_sync(decoder);
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decoder->sync = 0;
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decoder->sync = 0;
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return result;
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return result;
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}
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}
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