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Diffstat (limited to 'src/combined/decoder_flac.c')
| -rw-r--r-- | src/combined/decoder_flac.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/src/combined/decoder_flac.c b/src/combined/decoder_flac.c deleted file mode 100644 index fe1822797..000000000 --- a/src/combined/decoder_flac.c +++ /dev/null @@ -1,446 +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 - * - * John McCutchan 2003 - * FLAC Decoder (http://flac.sf.net) - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdlib.h> -#include <string.h> - -#include <FLAC/stream_decoder.h> - -#if !defined FLAC_API_VERSION_CURRENT || FLAC_API_VERSION_CURRENT < 8 -#include <FLAC/seekable_stream_decoder.h> -#define LEGACY_FLAC -#else -#undef LEGACY_FLAC -#endif - -#define LOG_MODULE "flac_decoder" -#define LOG_VERBOSE - -/* -#define LOG -*/ - -#include "xine_internal.h" -#include "audio_out.h" -#include "buffer.h" - -#include "demux_flac.h" - -typedef struct { - audio_decoder_class_t decoder_class; -} flac_class_t; - -typedef struct flac_decoder_s { - audio_decoder_t audio_decoder; - - int64_t pts; - - int output_sampling_rate; - int output_open; - int output_mode; - - xine_stream_t *stream; - - FLAC__StreamDecoder *flac_decoder; - - int sample_rate; - int bits_per_sample; - int channels; - - unsigned char *buf; - int buf_size; - int buf_pos; - int min_size; - -} flac_decoder_t; - -/* - * FLAC callback functions - */ - -static FLAC__StreamDecoderReadStatus -flac_read_callback (const FLAC__StreamDecoder *decoder, - FLAC__byte buffer[], - unsigned *bytes, - void *client_data) -{ - flac_decoder_t *this = (flac_decoder_t *)client_data; - int number_of_bytes_to_copy; - - lprintf("flac_read_callback: %d\n", *bytes); - - if (this->buf_pos > *bytes) - number_of_bytes_to_copy = *bytes; - else - number_of_bytes_to_copy = this->buf_pos; - - lprintf("number_of_bytes_to_copy: %d\n", number_of_bytes_to_copy); - - *bytes = number_of_bytes_to_copy; - - xine_fast_memcpy (buffer, this->buf, number_of_bytes_to_copy); - - this->buf_pos -= number_of_bytes_to_copy; - memmove(this->buf, &this->buf[number_of_bytes_to_copy], this->buf_pos ); - - if(number_of_bytes_to_copy) - return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; - else - return FLAC__STREAM_DECODER_READ_STATUS_ABORT; -} - -static FLAC__StreamDecoderWriteStatus -flac_write_callback (const FLAC__StreamDecoder *decoder, - const FLAC__Frame *frame, - const FLAC__int32 *const buffer[], - void *client_data) -{ - flac_decoder_t *this = (flac_decoder_t *)client_data; - audio_buffer_t *audio_buffer = NULL; - int samples_left = frame->header.blocksize; - int bytes_per_sample = (frame->header.bits_per_sample <= 8) ? 1 : 2; - int buf_samples; - int8_t *data8; - int16_t *data16; - int i,j; - - lprintf("flac_write_callback\n"); - - while( samples_left ) { - - audio_buffer = this->stream->audio_out->get_buffer(this->stream->audio_out); - - if( audio_buffer->mem_size < samples_left * frame->header.channels * bytes_per_sample ) - buf_samples = audio_buffer->mem_size / (frame->header.channels * bytes_per_sample); - else - buf_samples = samples_left; - - switch (frame->header.bits_per_sample) { - case 8: - data8 = (int8_t *)audio_buffer->mem; - - for( j=0; j < buf_samples; j++ ) - for( i=0; i < frame->header.channels; i++ ) - *data8++ = buffer[i][j]; - break; - - case 16: - data16 = (int16_t *)audio_buffer->mem; - - for( j=0; j < buf_samples; j++ ) - for( i=0; i < frame->header.channels; i++ ) - *data16++ = buffer[i][j]; - break; - - case 24: - data16 = (int16_t *)audio_buffer->mem; - - for( j=0; j < buf_samples; j++ ) - for( i=0; i < frame->header.channels; i++ ) - *data16++ = buffer[i][j] >> 8; - break; - - } - - audio_buffer->num_frames = buf_samples; - audio_buffer->vpts = this->pts; - this->pts = 0; - this->stream->audio_out->put_buffer (this->stream->audio_out, audio_buffer, this->stream); - - samples_left -= buf_samples; - } - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; -} - -#ifdef LEGACY_FLAC -static void -flac_metadata_callback (const FLAC__StreamDecoder *decoder, - const FLAC__StreamMetadata *metadata, - void *client_data) -{ - /* flac_decoder_t *this = (flac_decoder_t *)client_data; */ - - lprintf("Metadata callback called!\n"); - -#ifdef LOG - if (metadata->type == FLAC__METADATA_TYPE_STREAMINFO) { - printf("libflac: min_blocksize = %d\n", metadata->data.stream_info.min_blocksize); - printf("libflac: max_blocksize = %d\n", metadata->data.stream_info.max_blocksize); - printf("libflac: min_framesize = %d\n", metadata->data.stream_info.min_framesize); - printf("libflac: max_framesize = %d\n", metadata->data.stream_info.max_framesize); - /* does not work well: - this->min_size = 2 * metadata->data.stream_info.max_blocksize; */ - } -#endif - - return; -} -#endif - -static void -flac_error_callback (const FLAC__StreamDecoder *decoder, - FLAC__StreamDecoderErrorStatus status, - void *client_data) -{ - /* This will be called if there is an error in the flac stream */ - lprintf("flac_error_callback\n"); - -#ifdef LOG - if (status == FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) - printf("libflac: Decoder lost synchronization.\n"); - else if (status == FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER) - printf("libflac: Decoder encounted a corrupted frame header.\n"); - else if (status == FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH) - printf("libflac: Frame's data did not match the CRC in the footer.\n"); - else - printf("libflac: unknown error.\n"); -#endif - - return; -} - - -/* - * FLAC plugin decoder - */ - -static void -flac_reset (audio_decoder_t *this_gen) -{ - flac_decoder_t *this = (flac_decoder_t *) this_gen; - - this->buf_pos = 0; - - if( FLAC__stream_decoder_get_state(this->flac_decoder) != - FLAC__STREAM_DECODER_SEARCH_FOR_METADATA ) - FLAC__stream_decoder_flush (this->flac_decoder); -} - -static void -flac_discontinuity (audio_decoder_t *this_gen) -{ - flac_decoder_t *this = (flac_decoder_t *) this_gen; - - this->pts = 0; - - lprintf("Discontinuity!\n"); -} - -static void -flac_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) -{ - flac_decoder_t *this = (flac_decoder_t *) this_gen; - int ret = 1; - - /* We are getting the stream header, open up the audio - * device, and collect information about the stream - */ - if (buf->decoder_flags & BUF_FLAG_STDHEADER) - { - int mode = AO_CAP_MODE_MONO; - - this->sample_rate = buf->decoder_info[1]; - this->bits_per_sample = buf->decoder_info[2]; - this->channels = buf->decoder_info[3]; - - mode = _x_ao_channels2mode(this->channels); - - if (!this->output_open) - { - const int bits = this->bits_per_sample; - this->output_open = (this->stream->audio_out->open) ( - this->stream->audio_out, - this->stream, - bits > 16 ? 16 : bits, - this->sample_rate, - mode); - } - this->buf_pos = 0; - } else if (this->output_open) - { - /* This isn't a header frame and we have opened the output device */ - - - /* What we have buffered so far, and what is coming in - * is larger than our buffer - */ - if (this->buf_pos + buf->size > this->buf_size) - { - this->buf_size += 2 * buf->size; - this->buf = realloc (this->buf, this->buf_size); - lprintf("reallocating buffer to %d\n", this->buf_size); - } - - xine_fast_memcpy (&this->buf[this->buf_pos], buf->content, buf->size); - this->buf_pos += buf->size; - - if (buf->pts) - this->pts = buf->pts; - - /* We have enough to decode a frame */ - while( ret && this->buf_pos > this->min_size ) { - - FLAC__StreamDecoderState state = FLAC__stream_decoder_get_state(this->flac_decoder); - - if( state == FLAC__STREAM_DECODER_SEARCH_FOR_METADATA ) { - lprintf("process_until_end_of_metadata\n"); - ret = FLAC__stream_decoder_process_until_end_of_metadata (this->flac_decoder); - } else if ( state == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC || - state == FLAC__STREAM_DECODER_READ_FRAME ) { - lprintf("process_single\n"); - ret = FLAC__stream_decoder_process_single (this->flac_decoder); - } else { - lprintf("aborted.\n"); - FLAC__stream_decoder_flush (this->flac_decoder); - break; - } - } - } else - return; - - -} - -static void -flac_dispose (audio_decoder_t *this_gen) { - flac_decoder_t *this = (flac_decoder_t *) this_gen; - - FLAC__stream_decoder_finish (this->flac_decoder); - - FLAC__stream_decoder_delete (this->flac_decoder); - - if (this->output_open) - this->stream->audio_out->close (this->stream->audio_out, this->stream); - - 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) { - flac_decoder_t *this ; - - this = calloc(1, sizeof (flac_decoder_t)); - - this->audio_decoder.decode_data = flac_decode_data; - this->audio_decoder.reset = flac_reset; - this->audio_decoder.discontinuity = flac_discontinuity; - this->audio_decoder.dispose = flac_dispose; - this->stream = stream; - - this->output_open = 0; - this->buf = NULL; - this->buf_size = 0; - this->min_size = 65536; - this->pts = 0; - - this->flac_decoder = FLAC__stream_decoder_new(); - -#ifdef LEGACY_FLAC - FLAC__stream_decoder_set_read_callback (this->flac_decoder, - flac_read_callback); - FLAC__stream_decoder_set_write_callback (this->flac_decoder, - flac_write_callback); - FLAC__stream_decoder_set_metadata_callback (this->flac_decoder, - flac_metadata_callback); - FLAC__stream_decoder_set_error_callback (this->flac_decoder, - flac_error_callback); - - FLAC__stream_decoder_set_client_data (this->flac_decoder, this); - - if (FLAC__stream_decoder_init (this->flac_decoder) != FLAC__STREAM_DECODER_SEARCH_FOR_METADATA) { - free (this); - return NULL; - } -#else - if ( FLAC__stream_decoder_init_stream (this->flac_decoder, - flac_read_callback, - NULL, /* seek */ - NULL, /* tell */ - NULL, /* length */ - NULL, /* eof */ - flac_write_callback, - NULL, /* metadata */ - flac_error_callback, - this - ) != FLAC__STREAM_DECODER_INIT_STATUS_OK ) { - free (this); - return NULL; - } -#endif - - return (audio_decoder_t *) this; -} - -/* - * flac plugin class - */ - -static char *get_identifier (audio_decoder_class_t *this) { - return "flacdec"; -} - -static char *get_description (audio_decoder_class_t *this) { - return "flac audio decoder plugin"; -} - -static void dispose_class (audio_decoder_class_t *this) { - free (this); -} - -static void * -init_plugin (xine_t *xine, void *data) { - flac_class_t *this; - - this = calloc(1, sizeof (flac_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_FLAC, 0 - }; - -static const decoder_info_t dec_info_audio = { - audio_types, /* supported types */ - 8 /* priority */ -}; - -const plugin_info_t xine_plugin_info[] EXPORTED = { - /* type, API, "name", version, special_info, init_function */ - { PLUGIN_DEMUX, 26, "flac", XINE_VERSION_CODE, NULL, demux_flac_init_class }, - { PLUGIN_AUDIO_DECODER, 15, "flacdec", XINE_VERSION_CODE, &dec_info_audio, init_plugin }, - { PLUGIN_NONE, 0, "", 0, NULL, NULL } -}; |