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-rw-r--r--src/demuxers/demux_tta.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/src/demuxers/demux_tta.c b/src/demuxers/demux_tta.c
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+++ b/src/demuxers/demux_tta.c
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+/*
+ * Copyright (C) 2006 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
+ *
+ * True Audio demuxer by Diego Pettenò <flameeyes@gentoo.org>
+ * Inspired by tta libavformat demuxer by Alex Beregszaszi
+ *
+ * $Id: demux_tta.c,v 1.4 2007/03/29 16:46:23 dgp85 Exp $
+ */
+
+#define LOG_MODULE "demux_tta"
+#define LOG_VERBOSE
+
+#include "xine_internal.h"
+#include "xineutils.h"
+#include "demux.h"
+#include "buffer.h"
+#include "bswap.h"
+#include "group_audio.h"
+
+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;
+
+ uint32_t *seektable;
+ uint32_t totalframes;
+ uint32_t currentframe;
+
+ int status;
+
+ union {
+ struct tta_header {
+ uint32_t signature; /* TTA1 */
+ uint16_t flags; /* Skipped */
+ uint16_t channels;
+ uint16_t bits_per_sample;
+ uint32_t samplerate;
+ uint32_t data_length;
+ uint32_t crc32;
+ } __attribute__((__packed__)) tta;
+ uint8_t buffer[22]; /* This is the size of the header */
+ } header;
+} demux_tta_t;
+
+typedef struct {
+ demux_class_t demux_class;
+} demux_tta_class_t;
+
+#define FOURCC_32(a, b, c, d) (d + (c<<8) + (b<<16) + (a<<24))
+
+static int open_tta_file(demux_tta_t *this) {
+ uint8_t peek[4];
+ uint32_t framelen;
+
+ if (_x_demux_read_header(this->input, peek, 4) != 4)
+ return 0;
+
+ if ( BE_32(peek) != FOURCC_32('T', 'T', 'A', '1') )
+ return 0;
+
+ if ( this->input->read(this->input, this->header.buffer, sizeof(this->header)) != sizeof(this->header) )
+ return 0;
+
+ framelen = 1.04489795918367346939 * le2me_32(this->header.tta.samplerate);
+ this->totalframes = le2me_32(this->header.tta.data_length) / framelen + ((le2me_32(this->header.tta.data_length) % framelen) ? 1 : 0);
+ this->currentframe = 0;
+
+ if(this->totalframes >= UINT_MAX/sizeof(uint32_t)) {
+ xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, _("demux_tta: total frames count too high\n"));
+ return 0;
+ }
+
+ this->seektable = xine_xmalloc(sizeof(uint32_t)*this->totalframes);
+ this->input->read(this->input, this->seektable, sizeof(uint32_t)*this->totalframes);
+
+ /* Skip the CRC32 */
+ this->input->seek(this->input, 4, SEEK_CUR);
+
+ return 1;
+}
+
+static int demux_tta_send_chunk(demux_plugin_t *this_gen) {
+ demux_tta_t *this = (demux_tta_t *) this_gen;
+ uint32_t bytes_to_read;
+
+ if ( this->currentframe > this->totalframes ) {
+ this->status = DEMUX_FINISHED;
+ return this->status;
+ }
+
+ bytes_to_read = le2me_32(this->seektable[this->currentframe]);
+
+ while(bytes_to_read) {
+ off_t bytes_read = 0;
+ buf_element_t *buf = NULL;
+
+ /* Get a buffer */
+ buf = this->audio_fifo->buffer_pool_alloc(this->audio_fifo);
+ buf->type = BUF_AUDIO_TTA;
+ buf->pts = 0;
+ buf->extra_info->total_time = this->totalframes;
+ buf->decoder_flags = 0;
+
+ /* Set normalised position */
+ buf->extra_info->input_normpos =
+ (int) ((double) this->currentframe * 65535 / this->totalframes);
+
+ /* Set time */
+ /* buf->extra_info->input_time = this->current_sample / this->samplerate; */
+
+ bytes_read = this->input->read(this->input, buf->content, ( bytes_to_read > buf->max_size ) ? buf->max_size : bytes_to_read);
+
+ buf->size = bytes_read;
+
+ bytes_to_read -= bytes_read;
+
+ if ( bytes_to_read <= 0 )
+ buf->decoder_flags |= BUF_FLAG_FRAME_END;
+
+ this->audio_fifo->put(this->audio_fifo, buf);
+ }
+
+ this->currentframe++;
+
+ return this->status;
+}
+
+static void demux_tta_send_headers(demux_plugin_t *this_gen) {
+ demux_tta_t *this = (demux_tta_t *) this_gen;
+ buf_element_t *buf;
+
+ this->audio_fifo = this->stream->audio_fifo;
+
+ this->status = DEMUX_OK;
+
+ _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,
+ le2me_16(this->header.tta.channels));
+ _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_SAMPLERATE,
+ le2me_32(this->header.tta.samplerate));
+ _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_BITS,
+ le2me_16(this->header.tta.bits_per_sample));
+
+ /* send start buffers */
+ _x_demux_control_start(this->stream);
+
+ /* send init info to decoders */
+ if (this->audio_fifo) {
+ xine_waveformatex wave;
+
+ buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
+ buf->type = BUF_AUDIO_TTA;
+ buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_STDHEADER|BUF_FLAG_FRAME_END;
+ buf->decoder_info[0] = 0;
+ buf->decoder_info[1] = le2me_32(this->header.tta.samplerate);
+ buf->decoder_info[2] = le2me_16(this->header.tta.bits_per_sample);
+ buf->decoder_info[3] = le2me_16(this->header.tta.channels);
+
+ buf->size = sizeof(xine_waveformatex) + sizeof(this->header) + sizeof(uint32_t)*this->totalframes;
+ memcpy(buf->content+sizeof(xine_waveformatex), this->header.buffer, sizeof(this->header));
+ memcpy(buf->content+sizeof(xine_waveformatex)+sizeof(this->header), this->seektable, sizeof(uint32_t)*this->totalframes);
+
+ wave.cbSize = buf->size - sizeof(xine_waveformatex);
+ memcpy(buf->content, &wave, sizeof(wave));
+
+ this->audio_fifo->put (this->audio_fifo, buf);
+ }
+}
+
+static int demux_tta_seek (demux_plugin_t *this_gen,
+ off_t start_pos, int start_time, int playing) {
+ demux_tta_t *this = (demux_tta_t *) this_gen;
+
+ /* if thread is not running, initialize demuxer */
+ if( !playing ) {
+
+ /* send new pts */
+ _x_demux_control_newpts(this->stream, 0, 0);
+
+ this->status = DEMUX_OK;
+ }
+
+ return this->status;
+}
+
+static void demux_tta_dispose (demux_plugin_t *this_gen) {
+ demux_tta_t *this = (demux_tta_t *) this_gen;
+
+ free(this);
+}
+
+static int demux_tta_get_status (demux_plugin_t *this_gen) {
+ demux_tta_t *this = (demux_tta_t *) this_gen;
+
+ return this->status;
+}
+
+static int demux_tta_get_stream_length (demux_plugin_t *this_gen) {
+// demux_tta_t *this = (demux_tta_t *) this_gen;
+
+ return 0;
+}
+
+static uint32_t demux_tta_get_capabilities(demux_plugin_t *this_gen) {
+ return DEMUX_CAP_NOCAP;
+}
+
+static int demux_tta_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_tta_t *this;
+
+ this = xine_xmalloc (sizeof (demux_tta_t));
+ this->stream = stream;
+ this->input = input;
+
+ this->demux_plugin.send_headers = demux_tta_send_headers;
+ this->demux_plugin.send_chunk = demux_tta_send_chunk;
+ this->demux_plugin.seek = demux_tta_seek;
+ this->demux_plugin.dispose = demux_tta_dispose;
+ this->demux_plugin.get_status = demux_tta_get_status;
+ this->demux_plugin.get_stream_length = demux_tta_get_stream_length;
+ this->demux_plugin.get_capabilities = demux_tta_get_capabilities;
+ this->demux_plugin.get_optional_data = demux_tta_get_optional_data;
+ this->demux_plugin.demux_class = class_gen;
+
+ this->status = DEMUX_FINISHED;
+
+ this->seektable = NULL;
+
+ 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_tta_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 "True Audio demux plugin";
+}
+
+static const char *get_identifier (demux_class_t *this_gen) {
+ return "True Audio";
+}
+
+static const char *get_extensions (demux_class_t *this_gen) {
+ return "tta";
+}
+
+static const char *get_mimetypes (demux_class_t *this_gen) {
+ return NULL;
+}
+
+static void class_dispose (demux_class_t *this_gen) {
+ demux_tta_class_t *this = (demux_tta_class_t *) this_gen;
+
+ free (this);
+}
+
+void *demux_tta_init_plugin (xine_t *xine, void *data) {
+ demux_tta_class_t *this;
+
+ this = xine_xmalloc (sizeof (demux_tta_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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-27 14:06:27 +0000