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-rw-r--r--src/libxineadec/fooaudio.c352
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diff --git a/src/libxineadec/fooaudio.c b/src/libxineadec/fooaudio.c
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index 776136fc2..000000000
--- a/src/libxineadec/fooaudio.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
- * Copyright (C) 2000-2001 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
- *
- * fooaudio.c: This is a reference audio decoder for the xine multimedia
- * player. It really works too! It will output a continuous sine wave in
- * place of the data it should actually send.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "xine_internal.h"
-#include "audio_out.h"
-#include "buffer.h"
-#include "xineutils.h"
-#include "bswap.h"
-
-/* math.h required for fooaudio sine wave generation */
-#include <math.h>
-
-#define AUDIOBUFSIZE 128*1024
-
-typedef struct {
- audio_decoder_class_t decoder_class;
-} fooaudio_class_t;
-
-typedef struct fooaudio_decoder_s {
- audio_decoder_t audio_decoder;
-
- xine_stream_t *stream;
-
- int sample_rate; /* audio sample rate */
- int bits_per_sample; /* bits/sample, usually 8 or 16 */
- int channels; /* 1 or 2, usually */
-
- int output_open; /* flag to indicate audio is ready */
-
- unsigned char *buf; /* data accumulation buffer */
- int bufsize; /* maximum size of buf */
- int size; /* size of accumulated data in buf */
-
- /* fooaudio-specific variables */
- int64_t last_pts;
- unsigned int iteration;
-
-} fooaudio_decoder_t;
-
-/**************************************************************************
- * fooaudio specific decode functions
- *************************************************************************/
-
-/**************************************************************************
- * xine audio plugin functions
- *************************************************************************/
-
-static void fooaudio_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
-
- fooaudio_decoder_t *this = (fooaudio_decoder_t *) this_gen;
- audio_buffer_t *audio_buffer;
- int i;
- int64_t samples_to_generate;
- int samples_to_send;
-
- if (buf->decoder_flags & BUF_FLAG_STDHEADER) {
-
- /* When the engine sends a BUF_FLAG_HEADER flag, it is time to initialize
- * the decoder. The buffer element type has 4 decoder_info fields,
- * 0..3. Field 1 is the sample rate. Field 2 is the bits/sample. Field
- * 3 is the number of channels. */
- this->sample_rate = buf->decoder_info[1];
- this->bits_per_sample = buf->decoder_info[2];
- this->channels = buf->decoder_info[3];
-
- /* initialize the data accumulation buffer */
- this->buf = calloc(1, AUDIOBUFSIZE);
- this->bufsize = AUDIOBUFSIZE;
- this->size = 0;
-
- /* take this opportunity to initialize stream/meta information */
- _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, "fooaudio");
-
- /* perform any other required initialization */
- this->last_pts = -1;
- this->iteration = 0;
-
- return;
- }
-
- /* if the audio output is not open yet, open the audio output */
-#warning: Audio output is hardcoded to mono 16-bit PCM
- if (!this->output_open) {
- this->output_open = (this->stream->audio_out->open) (
- this->stream->audio_out,
- this->stream,
-/* this->bits_per_sample, */
- 16,
- this->sample_rate,
-/* _x_ao_channels2mode(this->channels));*/
- AO_CAP_MODE_MONO);
- }
-
- /* if the audio still isn't open, do not go any further with the decode */
- if (!this->output_open)
- return;
-
- /* accumulate the data passed through the buffer element type; increase
- * the accumulator buffer size as necessary */
- if( this->size + buf->size > this->bufsize ) {
- this->bufsize = this->size + 2 * buf->size;
- xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG,
- "fooaudio: increasing source buffer to %d to avoid overflow.\n", this->bufsize);
- this->buf = realloc( this->buf, this->bufsize );
- }
- xine_fast_memcpy (&this->buf[this->size], buf->content, buf->size);
- this->size += buf->size;
-
- /* When a buffer element type has the BUF_FLAG_FRAME_END flag set, it is
- * time to decode the data in the buffer. */
- if (buf->decoder_flags & BUF_FLAG_FRAME_END) {
-
- /* This is where the real meat of the audio decoder is implemented.
- * The general strategy is to decode the data in the accumulation buffer
- * into raw PCM data and then dispatch the PCM to the engine in smaller
- * buffers. What follows in the inside of this scope is the meat of
- * this particular audio decoder. */
-
- /* Operation of the fooaudio decoder:
- * This decoder generates a continuous sine pattern based on the pts
- * values sent by the xine engine. Two pts values are needed to know
- * how long to make the audio. Thus, If this is the first frame or
- * a seek has occurred (indicated by this->last_pts = -1),
- * log the pts but do not create any audio.
- *
- * When a valid pts delta is generated, create n audio samples, where
- * n is given as:
- *
- * n pts delta
- * ----------- = --------- => n = (pts delta * sample rate) / 90000
- * sample rate 90000
- *
- */
-
- if (this->last_pts != -1) {
-
- /* no real reason to set this variable to 0 first; I just wanted the
- * novelty of using all 4 basic arithmetic ops in a row (+ - * /) */
- samples_to_generate = 0;
- samples_to_generate += buf->pts;
- samples_to_generate -= this->last_pts;
- samples_to_generate *= this->sample_rate;
- samples_to_generate /= 90000;
-
- /* save the pts now since it will likely be trashed later */
- this->last_pts = buf->pts;
-
- while (samples_to_generate) {
-
- /* get an audio buffer */
- audio_buffer = this->stream->audio_out->get_buffer (this->stream->audio_out);
- if (audio_buffer->mem_size == 0) {
- xprintf (this->stream->xine, XINE_VERBOSITY_DEBUG,
- "fooaudio: Help! Allocated audio buffer with nothing in it!\n");
- return;
- }
-
- /* samples_to_generate is a sample count; mem_size is a byte count */
- if (samples_to_generate > audio_buffer->mem_size / 2)
- samples_to_send = audio_buffer->mem_size / 2;
- else
- samples_to_send = samples_to_generate;
- samples_to_generate -= samples_to_send;
-
-#define WAVE_HZ 300
- /* fill up the samples in the buffer */
- for (i = 0; i < samples_to_send; i++)
- audio_buffer->mem[i] =
- (short)(sin(2 * M_PI * this->iteration++ / WAVE_HZ) * 32767);
-
- /* final prep for audio buffer dispatch */
- audio_buffer->num_frames = samples_to_send;
- audio_buffer->vpts = buf->pts;
- buf->pts = 0; /* only first buffer gets the real pts */
- this->stream->audio_out->put_buffer (this->stream->audio_out, audio_buffer, this->stream);
-
- }
- } else {
- /* log the pts for the next time */
- this->last_pts = buf->pts;
- }
-
- /* reset data accumulation buffer */
- this->size = 0;
- }
-}
-
-/* This function resets the state of the audio decoder. This usually
- * entails resetting the data accumulation buffer. */
-static void fooaudio_reset (audio_decoder_t *this_gen) {
-
- fooaudio_decoder_t *this = (fooaudio_decoder_t *) this_gen;
-
- this->size = 0;
-
- /* this is specific to fooaudio */
- this->last_pts = -1;
-}
-
-/* This function resets the last pts value of the audio decoder. */
-static void fooaudio_discontinuity (audio_decoder_t *this_gen) {
-
- fooaudio_decoder_t *this = (fooaudio_decoder_t *) this_gen;
-
- /* this is specific to fooaudio */
- this->last_pts = -1;
-}
-
-/* This function closes the audio output and frees the private audio decoder
- * structure. */
-static void fooaudio_dispose (audio_decoder_t *this_gen) {
-
- fooaudio_decoder_t *this = (fooaudio_decoder_t *) this_gen;
-
- /* close the audio output */
- if (this->output_open)
- this->stream->audio_out->close (this->stream->audio_out, this->stream);
- this->output_open = 0;
-
- /* free anything that was allocated during operation */
- free(this->buf);
- free(this);
-}
-
-/* This function allocates, initializes, and returns a private audio
- * decoder structure. */
-static audio_decoder_t *open_plugin (audio_decoder_class_t *class_gen, xine_stream_t *stream) {
-
- fooaudio_decoder_t *this ;
-
- this = (fooaudio_decoder_t *) calloc(1, sizeof(fooaudio_decoder_t));
-
- /* connect the member functions */
- this->audio_decoder.decode_data = fooaudio_decode_data;
- this->audio_decoder.reset = fooaudio_reset;
- this->audio_decoder.discontinuity = fooaudio_discontinuity;
- this->audio_decoder.dispose = fooaudio_dispose;
-
- /* connect the stream */
- this->stream = stream;
-
- /* audio output is not open at the start */
- this->output_open = 0;
-
- /* initialize the basic audio parameters */
- this->channels = 0;
- this->sample_rate = 0;
- this->bits_per_sample = 0;
-
- /* initialize the data accumulation buffer */
- this->buf = NULL;
- this->bufsize = 0;
- this->size = 0;
-
- /* return the newly-initialized audio decoder */
- return &this->audio_decoder;
-}
-
-/* This function returns a brief string that describes (usually with the
- * decoder's most basic name) the audio decoder plugin. */
-static char *get_identifier (audio_decoder_class_t *this) {
- return "fooaudio";
-}
-
-/* This function returns a slightly longer string describing the audio
- * decoder plugin. */
-static char *get_description (audio_decoder_class_t *this) {
- return "fooaudio: reference xine audio decoder plugin";
-}
-
-/* This function frees the audio decoder class and any other memory that was
- * allocated. */
-static void dispose_class (audio_decoder_class_t *this_gen) {
-
- fooaudio_class_t *this = (fooaudio_class_t *)this_gen;
-
- free (this);
-}
-
-/* This function allocates a private audio decoder class and initializes
- * the class's member functions. */
-static void *init_plugin (xine_t *xine, void *data) {
-
- fooaudio_class_t *this ;
-
- this = (fooaudio_class_t *) xine_malloc (sizeof (fooaudio_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;
-}
-
-/* This is a list of all of the internal xine audio buffer types that
- * this decoder is able to handle. Check src/xine-engine/buffer.h for a
- * list of valid buffer types (and add a new one if the one you need does
- * not exist). Terminate the list with a 0. */
-static uint32_t audio_types[] = {
- /* BUF_AUDIO_FOO, */
- 0
-};
-
-/* This data structure combines the list of supported xine buffer types and
- * the priority that the plugin should be given with respect to other
- * plugins that handle the same buffer type. A plugin with priority (n+1)
- * will be used instead of a plugin with priority (n). */
-static const decoder_info_t dec_info_audio = {
- audio_types, /* supported types */
- 5 /* priority */
-};
-
-/* The plugin catalog entry. This is the only information that this plugin
- * will export to the public. */
-const plugin_info_t xine_plugin_info[] EXPORTED = {
- /* { type, API version, "name", version, special_info, init_function }, */
- { PLUGIN_AUDIO_DECODER, 15, "fooaudio", 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 18:03:16 +0000