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Diffstat (limited to 'src/combined/ffmpeg/ff_dvaudio_decoder.c')
-rw-r--r--src/combined/ffmpeg/ff_dvaudio_decoder.c432
1 files changed, 0 insertions, 432 deletions
diff --git a/src/combined/ffmpeg/ff_dvaudio_decoder.c b/src/combined/ffmpeg/ff_dvaudio_decoder.c
deleted file mode 100644
index 4d78162df..000000000
--- a/src/combined/ffmpeg/ff_dvaudio_decoder.c
+++ /dev/null
@@ -1,432 +0,0 @@
-/*
- * Copyright (C) 2005 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
- *
- * dv audio decoder based on patch by Dan Dennedy <dan@dennedy.org>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <inttypes.h>
-#include <string.h>
-#include <math.h>
-
-#define LOG_MODULE "dvaudio"
-#define LOG_VERBOSE
-/*
-#define LOG
-*/
-
-#include "xine_internal.h"
-#include "buffer.h"
-#include "xineutils.h"
-
-#ifdef _MSC_VER
-/* ffmpeg has own definitions of those types */
-# undef int8_t
-# undef uint8_t
-# undef int16_t
-# undef uint16_t
-# undef int32_t
-# undef uint32_t
-# undef int64_t
-# undef uint64_t
-#endif
-
-#ifdef HAVE_FFMPEG_AVUTIL_H
-# include <avcodec.h>
-#elif defined HAVE_FFMPEG
-# include <libavcodec/avcodec.h>
-#else
-# include "../../libffmpeg/libavcodec/avcodec.h"
-#endif
-
-#include "../../libffmpeg/libavcodec/dvdata.h"
-
-#ifdef _MSC_VER
-# undef malloc
-# undef free
-# undef realloc
-#endif
-
-#define AUDIOBUFSIZE 128*1024
-#define MAXFRAMESIZE 131072
-
-
-typedef struct {
- audio_decoder_class_t decoder_class;
-} dvaudio_class_t;
-
-typedef struct dvaudio_decoder_s {
- audio_decoder_t audio_decoder;
-
- xine_stream_t *stream;
-
- int output_open;
- int audio_channels;
- int audio_bits;
- int audio_sample_rate;
-
- unsigned char *buf;
- int bufsize;
- int size;
-
- char *decode_buffer;
- int decoder_ok;
-
-} dvaudio_decoder_t;
-
-
-/*
- * This is the dumbest implementation of all -- it simply looks at
- * a fixed offset and if pack isn't there -- fails. We might want
- * to have a fallback mechanism for complete search of missing packs.
- */
-static const uint8_t* dv_extract_pack(uint8_t* frame, enum dv_pack_type t)
-{
- int offs;
-
- switch (t) {
- case dv_audio_source:
- offs = (80*6 + 80*16*3 + 3);
- break;
- case dv_audio_control:
- offs = (80*6 + 80*16*4 + 3);
- break;
- case dv_video_control:
- offs = (80*5 + 48 + 5);
- break;
- default:
- return NULL;
- }
-
- return (frame[offs] == t ? &frame[offs] : NULL);
-}
-
-static inline uint16_t dv_audio_12to16(uint16_t sample)
-{
- uint16_t shift, result;
-
- sample = (sample < 0x800) ? sample : sample | 0xf000;
- shift = (sample & 0xf00) >> 8;
-
- if (shift < 0x2 || shift > 0xd) {
- result = sample;
- } else if (shift < 0x8) {
- shift--;
- result = (sample - (256 * shift)) << shift;
- } else {
- shift = 0xe - shift;
- result = ((sample + ((256 * shift) + 1)) << shift) - 1;
- }
-
- return result;
-}
-
-/*
- * There's a couple of assumptions being made here:
- * 1. By default we silence erroneous (0x8000/16bit 0x800/12bit) audio samples.
- * We can pass them upwards when ffmpeg will be ready to deal with them.
- * 2. We don't do software emphasis.
- * 3. Audio is always returned as 16bit linear samples: 12bit nonlinear samples
- * are converted into 16bit linear ones.
- */
-static int dv_extract_audio(uint8_t* frame, uint8_t* pcm, uint8_t* pcm2)
-{
- int size, i, j, d, of, smpls, freq, quant, half_ch;
- uint16_t lc, rc;
- const DVprofile* sys;
- const uint8_t* as_pack;
-
- as_pack = dv_extract_pack(frame, dv_audio_source);
- if (!as_pack) /* No audio ? */
- return 0;
-
- sys = dv_frame_profile(frame);
- smpls = as_pack[1] & 0x3f; /* samples in this frame - min. samples */
- freq = (as_pack[4] >> 3) & 0x07; /* 0 - 48KHz, 1 - 44,1kHz, 2 - 32 kHz */
- quant = as_pack[4] & 0x07; /* 0 - 16bit linear, 1 - 12bit nonlinear */
-
- if (quant > 1)
- return -1; /* Unsupported quantization */
-
- size = (sys->audio_min_samples[freq] + smpls) * 4; /* 2ch, 2bytes */
- half_ch = sys->difseg_size/2;
-
- /* for each DIF segment */
- for (i = 0; i < sys->difseg_size; i++) {
- frame += 6 * 80; /* skip DIF segment header */
- if (quant == 1 && i == half_ch) {
- if (!pcm2)
- break;
- else
- pcm = pcm2;
- }
-
- for (j = 0; j < 9; j++) {
- for (d = 8; d < 80; d += 2) {
- if (quant == 0) { /* 16bit quantization */
- of = sys->audio_shuffle[i][j] + (d - 8)/2 * sys->audio_stride;
- if (of*2 >= size)
- continue;
-
-#ifdef WORDS_BIGENDIAN
- pcm[of*2] = frame[d];
- pcm[of*2+1] = frame[d+1];
-#else
- pcm[of*2] = frame[d+1];
- pcm[of*2+1] = frame[d];
-#endif
- if (pcm[of*2+1] == 0x80 && pcm[of*2] == 0x00)
- pcm[of*2+1] = 0;
- } else { /* 12bit quantization */
- lc = ((uint16_t)frame[d] << 4) |
- ((uint16_t)frame[d+2] >> 4);
- rc = ((uint16_t)frame[d+1] << 4) |
- ((uint16_t)frame[d+2] & 0x0f);
- lc = (lc == 0x800 ? 0 : dv_audio_12to16(lc));
- rc = (rc == 0x800 ? 0 : dv_audio_12to16(rc));
-
- of = sys->audio_shuffle[i%half_ch][j] + (d - 8)/3 * sys->audio_stride;
- if (of*2 >= size)
- continue;
-
-#ifdef WORDS_BIGENDIAN
- pcm[of*2] = lc >> 8;
- pcm[of*2+1] = lc & 0xff;
-#else
- pcm[of*2] = lc & 0xff;
- pcm[of*2+1] = lc >> 8;
-#endif
- of = sys->audio_shuffle[i%half_ch+half_ch][j] +
- (d - 8)/3 * sys->audio_stride;
-#ifdef WORDS_BIGENDIAN
- pcm[of*2] = rc >> 8;
- pcm[of*2+1] = rc & 0xff;
-#else
- pcm[of*2] = rc & 0xff;
- pcm[of*2+1] = rc >> 8;
-#endif
- ++d;
- }
- }
-
- frame += 16 * 80; /* 15 Video DIFs + 1 Audio DIF */
- }
- }
-
- return size;
-}
-
-static void dvaudio_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
-
- dvaudio_decoder_t *this = (dvaudio_decoder_t *) this_gen;
- int bytes_consumed;
- int decode_buffer_size;
- int offset;
- int out;
- audio_buffer_t *audio_buffer;
- int bytes_to_send;
-
- if (buf->decoder_flags & BUF_FLAG_PREVIEW)
- return;
-
- if (buf->decoder_flags & BUF_FLAG_STDHEADER) {
- this->buf = calloc(1, AUDIOBUFSIZE);
- this->bufsize = AUDIOBUFSIZE;
- this->size = 0;
- this->decode_buffer = calloc(1, MAXFRAMESIZE);
-
- this->audio_sample_rate = buf->decoder_info[1];
- this->audio_bits = buf->decoder_info[2];
- this->audio_channels = buf->decoder_info[3];
-
- _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, "DV Audio");
-
- this->decoder_ok = 1;
-
- return;
- }
-
- if (this->decoder_ok && !(buf->decoder_flags & (BUF_FLAG_HEADER|BUF_FLAG_SPECIAL))) {
-
- if (!this->output_open) {
- this->output_open = (this->stream->audio_out->open) (this->stream->audio_out,
- this->stream, this->audio_bits, this->audio_sample_rate,
- _x_ao_channels2mode(this->audio_channels));
- }
-
- /* if the audio still isn't open, bail */
- if (!this->output_open)
- return;
-
- if( this->size + buf->size > this->bufsize ) {
- this->bufsize = this->size + 2 * buf->size;
- xprintf(this->stream->xine, XINE_VERBOSITY_LOG,
- _("dvaudio: increasing 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;
-
- if (buf->decoder_flags & BUF_FLAG_FRAME_END) { /* time to decode a frame */
-
- offset = 0;
- while (this->size>0) {
- decode_buffer_size = dv_extract_audio(&this->buf[offset], this->decode_buffer, NULL);
-
- if (decode_buffer_size > -1)
- bytes_consumed = dv_frame_profile(&this->buf[offset])->frame_size;
- else
- bytes_consumed = decode_buffer_size;
-
- /* dispatch the decoded audio */
- out = 0;
- while (out < decode_buffer_size) {
- 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,
- "dvaudio: Help! Allocated audio buffer with nothing in it!\n");
- return;
- }
-
- if ((decode_buffer_size - out) > audio_buffer->mem_size)
- bytes_to_send = audio_buffer->mem_size;
- else
- bytes_to_send = decode_buffer_size - out;
-
- /* fill up this buffer */
- xine_fast_memcpy(audio_buffer->mem, &this->decode_buffer[out],
- bytes_to_send);
- /* byte count / 2 (bytes / sample) / channels */
- audio_buffer->num_frames = bytes_to_send / 2 / this->audio_channels;
-
- 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);
-
- out += bytes_to_send;
- }
-
- this->size -= bytes_consumed;
- offset += bytes_consumed;
- }
-
- /* reset internal accumulation buffer */
- this->size = 0;
- }
- }
-}
-
-static void dvaudio_reset (audio_decoder_t *this_gen) {
- dvaudio_decoder_t *this = (dvaudio_decoder_t *) this_gen;
-
- this->size = 0;
-}
-
-static void dvaudio_discontinuity (audio_decoder_t *this_gen) {
-}
-
-static void dvaudio_dispose (audio_decoder_t *this_gen) {
-
- dvaudio_decoder_t *this = (dvaudio_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->decode_buffer);
-
- free (this_gen);
-}
-
-static audio_decoder_t *dvaudio_open_plugin (audio_decoder_class_t *class_gen, xine_stream_t *stream) {
-
- dvaudio_decoder_t *this ;
-
- this = calloc(1, sizeof (dvaudio_decoder_t));
-
- this->audio_decoder.decode_data = dvaudio_decode_data;
- this->audio_decoder.reset = dvaudio_reset;
- this->audio_decoder.discontinuity = dvaudio_discontinuity;
- this->audio_decoder.dispose = dvaudio_dispose;
-
- this->output_open = 0;
- this->audio_channels = 0;
- this->stream = stream;
- this->buf = NULL;
- this->size = 0;
- this->decoder_ok = 0;
-
- return &this->audio_decoder;
-}
-
-static char *dvaudio_get_identifier (audio_decoder_class_t *this) {
- return "dv audio";
-}
-
-static char *dvaudio_get_description (audio_decoder_class_t *this) {
- return "dv audio decoder plugin";
-}
-
-static void dvaudio_dispose_class (audio_decoder_class_t *this) {
- free (this);
-}
-
-static void *init_dvaudio_plugin (xine_t *xine, void *data) {
-
- dvaudio_class_t *this ;
-
- this = calloc(1, sizeof (dvaudio_class_t));
-
- this->decoder_class.open_plugin = dvaudio_open_plugin;
- this->decoder_class.get_identifier = dvaudio_get_identifier;
- this->decoder_class.get_description = dvaudio_get_description;
- this->decoder_class.dispose = dvaudio_dispose_class;
-
- return this;
-}
-
-static uint32_t supported_audio_types[] = {
- BUF_AUDIO_DV,
- 0
-};
-
-static const decoder_info_t dec_info_dvaudio = {
- supported_audio_types, /* supported types */
- 5 /* priority */
-};
-
-/*
- * exported plugin catalog entry
- */
-
-const plugin_info_t xine_plugin_info[] EXPORTED = {
- /* type, API, "name", version, special_info, init_function */
- { PLUGIN_AUDIO_DECODER, 15, "dvaudio", XINE_VERSION_CODE, &dec_info_dvaudio, init_dvaudio_plugin },
- { PLUGIN_NONE, 0, "", 0, NULL, NULL }
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 18:05:45 +0000