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Diffstat (limited to 'src/libxineadec/xine_lpcm_decoder.c')
-rw-r--r--src/libxineadec/xine_lpcm_decoder.c417
1 files changed, 0 insertions, 417 deletions
diff --git a/src/libxineadec/xine_lpcm_decoder.c b/src/libxineadec/xine_lpcm_decoder.c
deleted file mode 100644
index 71ac3f802..000000000
--- a/src/libxineadec/xine_lpcm_decoder.c
+++ /dev/null
@@ -1,417 +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
- *
- * 31-8-2001 Added LPCM rate sensing.
- * (c) 2001 James Courtier-Dutton James@superbug.demon.co.uk
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#ifndef __sun
-#define _XOPEN_SOURCE 500
-#endif
-/* avoid compiler warnings */
-#define _BSD_SOURCE 1
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <netinet/in.h> /* ntohs */
-
-#include "xine_internal.h"
-#include "audio_out.h"
-#include "buffer.h"
-
-#ifdef WIN32
-#include <winsock.h>
-/*#include <Winsock2.h>*/ /* htons */
-#endif
-
-typedef struct {
- audio_decoder_class_t decoder_class;
-} lpcm_class_t;
-
-typedef struct lpcm_decoder_s {
- audio_decoder_t audio_decoder;
-
- xine_stream_t *stream;
-
- uint32_t rate;
- uint32_t bits_per_sample;
- uint32_t number_of_channels;
- uint32_t ao_cap_mode;
-
- int output_open;
- int cpu_be; /* TRUE, if we're a Big endian CPU */
-
- int64_t pts;
-
- uint8_t *buf;
- size_t buffered_bytes;
- size_t buf_size;
-
-} lpcm_decoder_t;
-
-static void lpcm_reset (audio_decoder_t *this_gen) {
-
- lpcm_decoder_t *this = (lpcm_decoder_t *) this_gen;
-
- free (this->buf);
- this->buf = NULL;
-}
-
-static void lpcm_discontinuity (audio_decoder_t *this_gen) {
-
- lpcm_reset(this_gen);
-}
-
-static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
-
- lpcm_decoder_t *this = (lpcm_decoder_t *) this_gen;
- int16_t *sample_buffer=(int16_t *)buf->content;
- int buf_size = buf->size;
- int stream_be;
- audio_buffer_t *audio_buffer;
- int format_changed = 0;
- int special_dvd_audio = 0;
-
- /* Drop preview data */
- if (buf->decoder_flags & BUF_FLAG_PREVIEW)
- return;
-
- /* get config byte from mpeg2 stream */
- if ( (buf->decoder_flags & BUF_FLAG_SPECIAL) &&
- buf->decoder_info[1] == BUF_SPECIAL_LPCM_CONFIG ) {
- unsigned int bits_per_sample = 16;
- unsigned int sample_rate = 0;
- unsigned int num_channels;
-
- lprintf("lpcm_decoder: config data 0x%x\n", buf->decoder_info[2]);
-
- /* BluRay PCM header is 4 bytes */
- if (buf->decoder_info[2] & 0xffffff00) {
- static const uint8_t channels[16] = {0, 1, 0, 2, 3, 3, 4, 4, 5, 6, 7, 8, 0, 0, 0, 0};
-
- num_channels = channels[(buf->decoder_info[2] >> (16+4)) & 0x0f];
- switch ((buf->decoder_info[2] >> (24+6)) & 0x03) {
- case 1: bits_per_sample = 16; break;
- case 2: /*bits_per_sample = 20; break;*/
- /* fall thru. Samples are 0-padded to 24 bits, and
- * converted later to 16 bits by dropping 8 lowest bits.
- * this needs to be changed if audio out some day accepts 24bit samples.
- */
- case 3: bits_per_sample = 24; break;
- default: bits_per_sample = 0; break;
- }
- switch ((buf->decoder_info[2] >> 16) & 0x0f) {
- case 1: sample_rate = 48000; break;
- case 4: sample_rate = 96000; break;
- case 5: sample_rate = 192000; break;
- default: sample_rate = 0; break;
- }
-
- if (!num_channels || !sample_rate || !bits_per_sample)
- xine_log (this->stream->xine, XINE_LOG_MSG,
- "lpcm_decoder: unsupported BluRay PCM format: 0x%08x\n", buf->decoder_info[2]);
-
- if (this->buffered_bytes)
- xine_log (this->stream->xine, XINE_LOG_MSG, "lpcm_decoder: %zd bytes lost !\n", this->buffered_bytes);
-
- if (!this->buf) {
- this->buffered_bytes = 0;
- this->buf_size = 8128;
- this->buf = malloc(this->buf_size);
- }
-
- } else {
-
- /* MPEG2/DVD PCM header is one byte */
- num_channels = (buf->decoder_info[2] & 0x7) + 1;
- switch ((buf->decoder_info[2]>>4) & 3) {
- case 0: sample_rate = 48000; break;
- case 1: sample_rate = 96000; break;
- case 2: sample_rate = 44100; break;
- case 3: sample_rate = 32000; break;
- }
- switch ((buf->decoder_info[2]>>6) & 3) {
- case 0: bits_per_sample = 16; break;
- case 1: bits_per_sample = 20; break;
- case 2: bits_per_sample = 24; special_dvd_audio = 1; break;
- }
- }
-
- if( this->bits_per_sample != bits_per_sample ||
- this->number_of_channels != num_channels ||
- this->rate != sample_rate ||
- !this->output_open ) {
- this->bits_per_sample = bits_per_sample;
- this->number_of_channels = num_channels;
- this->rate = sample_rate;
- format_changed++;
-
- xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG,
- "lpcm_decoder: format changed to %d channels, %d bits per sample, %d Hz, %d kbit/s\n",
- num_channels, bits_per_sample, sample_rate, (num_channels * sample_rate * bits_per_sample)/1024);
- }
- }
-
- if( buf->decoder_flags & BUF_FLAG_STDHEADER ) {
- this->rate=buf->decoder_info[1];
- this->bits_per_sample=buf->decoder_info[2];
- this->number_of_channels=buf->decoder_info[3];
- format_changed++;
- }
-
- /*
- * (re-)open output device
- */
- if ( format_changed ) {
- if (this->output_open)
- this->stream->audio_out->close (this->stream->audio_out, this->stream);
-
- this->ao_cap_mode=_x_ao_channels2mode(this->number_of_channels);
-
- /* force 24-bit samples into 16 bits for now */
- if (this->bits_per_sample == 24)
- this->output_open = (this->stream->audio_out->open) (this->stream->audio_out, this->stream,
- 16,
- this->rate,
- this->ao_cap_mode) ;
- else
- this->output_open = (this->stream->audio_out->open) (this->stream->audio_out, this->stream,
- this->bits_per_sample,
- this->rate,
- this->ao_cap_mode) ;
-
- /* stream/meta info */
- _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, "Linear PCM");
- _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_BITRATE,
- this->bits_per_sample * this->rate * this->number_of_channels);
- }
-
- if (!this->output_open || (buf->decoder_flags & BUF_FLAG_HEADER) )
- return;
-
- if (buf->pts && !this->pts)
- this->pts = buf->pts;
-
- /* data accumulation */
- if (this->buf) {
- int frame_end = buf->decoder_flags & BUF_FLAG_FRAME_END;
- if (this->buffered_bytes || !frame_end) {
- if (this->buf_size < this->buffered_bytes + buf->size) {
- this->buf_size *= 2;
- this->buf = realloc(this->buf, this->buf_size);
- }
-
- memcpy(this->buf + this->buffered_bytes, buf->content, buf->size);
- this->buffered_bytes += buf->size;
-
- if (!frame_end)
- return;
-
- sample_buffer = (int16_t*)this->buf;
- buf_size = this->buffered_bytes;
- this->buffered_bytes = 0;
- }
- }
-
- audio_buffer = this->stream->audio_out->get_buffer (this->stream->audio_out);
-
- /* Swap LPCM samples into native byte order, if necessary */
- buf->type &= 0xffff0000;
- stream_be = ( buf->type == BUF_AUDIO_LPCM_BE );
-
- if( this->bits_per_sample == 16 ){
- if (stream_be != this->cpu_be)
- swab (sample_buffer, audio_buffer->mem, buf_size);
- else
- memcpy (audio_buffer->mem, sample_buffer, buf_size);
- }
- else if( this->bits_per_sample == 20 ) {
- uint8_t *s = (uint8_t *)sample_buffer;
- uint8_t *d = (uint8_t *)audio_buffer->mem;
- int n = buf_size;
-
- if (stream_be != this->cpu_be) {
- while( n >= 0 ) {
- swab( s, d, 8 );
- s += 10;
- d += 8;
- n -= 10;
- }
- } else {
- while( n >= 0 ) {
- memcpy( d, s, 8 );
- s += 10;
- d += 8;
- n -= 10;
- }
- }
- } else if( this->bits_per_sample == 24 ) {
- uint8_t *s = (uint8_t *)sample_buffer;
- uint8_t *d = (uint8_t *)audio_buffer->mem;
- int n = buf_size;
-
- if ( stream_be ) {
- if (special_dvd_audio)
- while (n >= 12) {
- if ( stream_be == this->cpu_be ) {
- *d++ = s[0];
- *d++ = s[1];
- *d++ = s[2];
- *d++ = s[3];
- *d++ = s[4];
- *d++ = s[5];
- *d++ = s[6];
- *d++ = s[7];
- } else {
- *d++ = s[1];
- *d++ = s[0];
- *d++ = s[3];
- *d++ = s[2];
- *d++ = s[5];
- *d++ = s[4];
- *d++ = s[7];
- *d++ = s[6];
- }
- s += 12;
- n -= 12;
- }
- else
- while (n >= 3) {
- if ( stream_be == this->cpu_be ) {
- *d++ = s[0];
- *d++ = s[1];
- } else {
- *d++ = s[1];
- *d++ = s[0];
- }
- s += 3;
- n -= 3;
- }
- } else {
- while (n >= 3) {
- if ( stream_be == this->cpu_be ) {
- *d++ = s[1];
- *d++ = s[2];
- } else {
- *d++ = s[2];
- *d++ = s[1];
- }
- s += 3;
- n -= 3;
- }
- }
-
- if ( (d - (uint8_t*)audio_buffer->mem)/2*3 < buf_size )
- xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, "lpcm_decoder: lost %i bytes of %i in the buffer\n", (int)(buf_size - (d - (uint8_t*)audio_buffer->mem)/2*3), buf_size);
-
- } else {
- memcpy (audio_buffer->mem, sample_buffer, buf_size);
- }
-
- audio_buffer->vpts = this->pts;
- audio_buffer->num_frames = (((buf_size*8)/this->number_of_channels)/this->bits_per_sample);
-
- this->stream->audio_out->put_buffer (this->stream->audio_out, audio_buffer, this->stream);
-
- this->pts = 0;
-}
-
-static void lpcm_dispose (audio_decoder_t *this_gen) {
- lpcm_decoder_t *this = (lpcm_decoder_t *) this_gen;
-
- if (this->output_open)
- this->stream->audio_out->close (this->stream->audio_out, this->stream);
- this->output_open = 0;
-
- free (this->buf);
-
- free (this_gen);
-}
-
-static audio_decoder_t *open_plugin (audio_decoder_class_t *class_gen, xine_stream_t *stream) {
-
- lpcm_decoder_t *this ;
-
- this = (lpcm_decoder_t *) calloc(1, sizeof(lpcm_decoder_t));
-
- this->audio_decoder.decode_data = lpcm_decode_data;
- this->audio_decoder.reset = lpcm_reset;
- this->audio_decoder.discontinuity = lpcm_discontinuity;
- this->audio_decoder.dispose = lpcm_dispose;
-
- this->output_open = 0;
- this->rate = 0;
- this->bits_per_sample=0;
- this->number_of_channels=0;
- this->ao_cap_mode=0;
- this->stream = stream;
-
- this->cpu_be = ( htons(1) == 1 );
-
- return &this->audio_decoder;
-}
-
-static char *get_identifier (audio_decoder_class_t *this) {
- return "Linear PCM";
-}
-
-static char *get_description (audio_decoder_class_t *this) {
- return "Linear PCM audio decoder plugin";
-}
-
-static void dispose_class (audio_decoder_class_t *this) {
- free (this);
-}
-
-static void *init_plugin (xine_t *xine, void *data) {
-
- lpcm_class_t *this ;
-
- this = (lpcm_class_t *) calloc(1, sizeof(lpcm_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_LPCM_BE, BUF_AUDIO_LPCM_LE, 0
-};
-
-static const decoder_info_t dec_info_audio = {
- audio_types, /* supported types */
- 1 /* priority */
-};
-
-const plugin_info_t xine_plugin_info[] EXPORTED = {
- /* type, API, "name", version, special_info, init_function */
- { PLUGIN_AUDIO_DECODER, 15, "pcm", XINE_VERSION_CODE, &dec_info_audio, init_plugin },
- { PLUGIN_NONE, 0, "", 0, NULL, NULL }
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 18:03:05 +0000