diff options
Diffstat (limited to 'src/audio_dec/xine_faad_decoder.c')
| -rw-r--r-- | src/audio_dec/xine_faad_decoder.c | 506 |
1 files changed, 506 insertions, 0 deletions
diff --git a/src/audio_dec/xine_faad_decoder.c b/src/audio_dec/xine_faad_decoder.c new file mode 100644 index 000000000..be495ee8f --- /dev/null +++ b/src/audio_dec/xine_faad_decoder.c @@ -0,0 +1,506 @@ +/* + * Copyright (C) 2000-2005 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 + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#define LOG_MODULE "libfaad" +#define LOG_VERBOSE +/* +#define LOG +*/ + +#include <xine/xine_internal.h> +#include <xine/audio_out.h> +#include <xine/buffer.h> +#include <xine/xineutils.h> +#ifdef HAVE_NEAACDEC_H +#include <neaacdec.h> +#else +#include "common.h" +#include "structs.h" +#include "decoder.h" +#include "syntax.h" +#endif + +#define FAAD_MIN_STREAMSIZE 768 /* 6144 bits/channel */ + +typedef struct { + audio_decoder_class_t decoder_class; +} faad_class_t; + +typedef struct faad_decoder_s { + audio_decoder_t audio_decoder; + + xine_stream_t *stream; + + /* faad2 stuff */ + NeAACDecHandle faac_dec; + NeAACDecConfigurationPtr faac_cfg; + NeAACDecFrameInfo faac_finfo; + int faac_failed; + + int raw_mode; + + unsigned char *buf; + int size; + int rec_audio_src_size; + int max_audio_src_size; + int64_t pts; + + unsigned char *dec_config; + int dec_config_size; + + unsigned long rate; + int bits_per_sample; + unsigned char num_channels; + int sbr; + + int output_open; + + unsigned long total_time; + unsigned long total_data; +} faad_decoder_t; + + +static void faad_reset (audio_decoder_t *this_gen) { + + faad_decoder_t *this = (faad_decoder_t *) this_gen; + this->size = 0; +} + +static void faad_meta_info_set ( faad_decoder_t *this ) { + switch (this->num_channels) { + case 1: + if (this->faac_finfo.sbr == SBR_UPSAMPLED) + _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, + "HE-AAC 1.0 (libfaad)"); + else + _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, + "AAC 1.0 (libfaad)"); + break; + case 2: + /* check if this is downmixed 5.1 */ + if (!this->faac_cfg || !this->faac_cfg->downMatrix) { + if (this->faac_finfo.sbr == SBR_UPSAMPLED) + _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, + "HE-AAC 2.0 (libfaad)"); + else + _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, + "AAC 2.0 (libfaad)"); + break; + } + case 6: + if (this->faac_finfo.sbr == SBR_UPSAMPLED) + _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, + "HE-AAC 5.1 (libfaad)"); + else + _x_meta_info_set_utf8(this->stream, XINE_META_INFO_AUDIOCODEC, + "AAC 5.1 (libfaad)"); + break; + } +} + +static int faad_open_dec( faad_decoder_t *this ) { + int used; + + this->faac_dec = NeAACDecOpen(); + if( !this->faac_dec ) { + xprintf( this->stream->xine, XINE_VERBOSITY_LOG, + _("libfaad: libfaad NeAACDecOpen() failed.\n")); + this->faac_failed++; + } else { + if( this->dec_config ) { + used = NeAACDecInit2(this->faac_dec, this->dec_config, this->dec_config_size, + &this->rate, &this->num_channels); + + if( used < 0 ) { + xprintf( this->stream->xine, XINE_VERBOSITY_LOG, + _("libfaad: libfaad NeAACDecInit2 failed.\n")); + this->faac_failed++; + } else + lprintf( "NeAACDecInit2 returned rate=%"PRId32" channels=%d\n", + this->rate, this->num_channels ); + } else { + used = NeAACDecInit(this->faac_dec, this->buf, this->size, + &this->rate, &this->num_channels); + + if( used < 0 ) { + xprintf ( this->stream->xine, XINE_VERBOSITY_LOG, + _("libfaad: libfaad NeAACDecInit failed.\n")); + this->faac_failed++; + } else { + lprintf( "NeAACDecInit() returned rate=%"PRId32" channels=%d (used=%d)\n", + this->rate, this->num_channels, used); + + this->size -= used; + memmove( this->buf, &this->buf[used], this->size ); + } + } + } + + if( !this->bits_per_sample ) + this->bits_per_sample = 16; + + if( this->faac_failed ) { + if( this->faac_dec ) { + NeAACDecClose( this->faac_dec ); + this->faac_dec = NULL; + } + _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_HANDLED, 0); + } else { + faad_meta_info_set(this); + } + + return this->faac_failed; +} + +static int faad_open_output( faad_decoder_t *this ) { + int ao_cap_mode; + + this->rec_audio_src_size = this->num_channels * FAAD_MIN_STREAMSIZE; + + switch( this->num_channels ) { + case 1: + ao_cap_mode=AO_CAP_MODE_MONO; + break; + case 6: + if(this->stream->audio_out->get_capabilities(this->stream->audio_out) & + AO_CAP_MODE_5_1CHANNEL) { + ao_cap_mode = AO_CAP_MODE_5_1CHANNEL; + break; + } else { + this->faac_cfg = NeAACDecGetCurrentConfiguration(this->faac_dec); + this->faac_cfg->downMatrix = 1; + NeAACDecSetConfiguration(this->faac_dec, this->faac_cfg); + this->num_channels = 2; + } + case 2: + ao_cap_mode=AO_CAP_MODE_STEREO; + break; + default: + return 0; + } + + this->output_open = (this->stream->audio_out->open) (this->stream->audio_out, + this->stream, + this->bits_per_sample, + this->rate, + ao_cap_mode) ; + return this->output_open; +} + +static void faad_decode_audio ( faad_decoder_t *this, int end_frame ) { + int used, decoded, outsize; + uint8_t *sample_buffer; + uint8_t *inbuf; + audio_buffer_t *audio_buffer; + int sample_size = this->size; + + if( !this->faac_dec ) + return; + + inbuf = this->buf; + while( (!this->raw_mode && end_frame && this->size >= 10) || + (this->raw_mode && this->size >= this->rec_audio_src_size) ) { + + sample_buffer = NeAACDecDecode(this->faac_dec, + &this->faac_finfo, inbuf, sample_size); + + if( !sample_buffer ) { + xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, + "libfaad: %s\n", NeAACDecGetErrorMessage(this->faac_finfo.error)); + used = 1; + } else { + used = this->faac_finfo.bytesconsumed; + + /* raw AAC parameters might only be known after decoding the first frame */ + if( !this->dec_config && + (this->num_channels != this->faac_finfo.channels || + this->rate != this->faac_finfo.samplerate) ) { + + this->num_channels = this->faac_finfo.channels; + this->rate = this->faac_finfo.samplerate; + + lprintf("NeAACDecDecode() returned rate=%"PRId32" channels=%d used=%d\n", + this->rate, this->num_channels, used); + + this->stream->audio_out->close (this->stream->audio_out, this->stream); + this->output_open = 0; + faad_open_output( this ); + + faad_meta_info_set( this ); + } + + /* faad doesn't tell us about sbr until after the first frame */ + if (this->sbr != this->faac_finfo.sbr) { + this->sbr = this->faac_finfo.sbr; + faad_meta_info_set( this ); + } + + /* estimate bitrate */ + this->total_time += (1000*this->faac_finfo.samples/(this->rate*this->num_channels)); + this->total_data += 8*used; + + if ((this->total_time > LONG_MAX) || (this->total_data > LONG_MAX)) { + this->total_time >>= 2; + this->total_data >>= 2; + } + + if (this->total_time) + _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_BITRATE, + 1000*(this->total_data/this->total_time)); + + decoded = this->faac_finfo.samples * 2; /* 1 sample = 2 bytes */ + + lprintf("decoded %d/%d output %ld\n", + used, this->size, this->faac_finfo.samples ); + + /* Performing necessary channel reordering because aac uses a different + * layout than alsa: + * + * aac 5.1 channel layout: c l r ls rs lfe + * alsa 5.1 channel layout: l r ls rs c lfe + * + * Reordering is only necessary for 5.0 and above. Currently only 5.0 + * and 5.1 is being taken care of, the rest will stay in the wrong order + * for now. + * + * WARNING: the following needs a output format of 16 bits per sample. + * TODO: - reorder while copying (in the while() loop) and optimizing + */ + if(this->num_channels == 5 || this->num_channels == 6) + { + int i = 0; + uint16_t* buf = (uint16_t*)(sample_buffer); + + for(; i < this->faac_finfo.samples; i += this->num_channels) { + uint16_t center = buf[i]; + *((uint64_t*)(buf + i)) = *((uint64_t*)(buf + i + 1)); + buf[i + 4] = center; + } + } + + while( decoded ) { + audio_buffer = this->stream->audio_out->get_buffer (this->stream->audio_out); + + if( decoded < audio_buffer->mem_size ) + outsize = decoded; + else + outsize = audio_buffer->mem_size; + + xine_fast_memcpy( audio_buffer->mem, sample_buffer, outsize ); + + audio_buffer->num_frames = outsize / (this->num_channels*2); + audio_buffer->vpts = this->pts; + + this->stream->audio_out->put_buffer (this->stream->audio_out, audio_buffer, this->stream); + + this->pts = 0; + decoded -= outsize; + sample_buffer += outsize; + } + } + + if(used >= this->size){ + this->size = 0; + } else { + this->size -= used; + inbuf += used; + } + + if( !this->raw_mode ) + this->size = 0; + } + + if( this->size ) + memmove( this->buf, inbuf, this->size); + +} + +static void faad_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) { + + faad_decoder_t *this = (faad_decoder_t *) this_gen; + + if (buf->decoder_flags & BUF_FLAG_PREVIEW) + return; + + /* store config information from ESDS mp4/qt atom */ + if( !this->faac_dec && (buf->decoder_flags & BUF_FLAG_SPECIAL) && + buf->decoder_info[1] == BUF_SPECIAL_DECODER_CONFIG ) { + + this->dec_config = malloc(buf->decoder_info[2]); + this->dec_config_size = buf->decoder_info[2]; + memcpy(this->dec_config, buf->decoder_info_ptr[2], buf->decoder_info[2]); + + if( faad_open_dec(this) ) + return; + + this->raw_mode = 0; + } + + /* get audio parameters from file header + (may be overwritten by libfaad returned parameters) */ + if (buf->decoder_flags & BUF_FLAG_STDHEADER) { + this->rate=buf->decoder_info[1]; + this->bits_per_sample=buf->decoder_info[2] ; + this->num_channels=buf->decoder_info[3] ; + + if( buf->size > sizeof(xine_waveformatex) ) { + xine_waveformatex *wavex = (xine_waveformatex *) buf->content; + + if( wavex->cbSize > 0 ) { + this->dec_config = malloc(wavex->cbSize); + this->dec_config_size = wavex->cbSize; + memcpy(this->dec_config, buf->content + sizeof(xine_waveformatex), + wavex->cbSize); + + if( faad_open_dec(this) ) + return; + + this->raw_mode = 0; + } + } + } else { + + lprintf ("decoding %d data bytes...\n", buf->size); + + if( (int)buf->size <= 0 || this->faac_failed ) + return; + + if( !this->size ) + this->pts = buf->pts; + + if( this->size + buf->size > this->max_audio_src_size ) { + this->max_audio_src_size = this->size + 2 * buf->size; + this->buf = realloc( this->buf, this->max_audio_src_size ); + } + + memcpy (&this->buf[this->size], buf->content, buf->size); + this->size += buf->size; + + if( !this->faac_dec && faad_open_dec(this) ) + return; + + /* open audio device as needed */ + if (!this->output_open) { + faad_open_output( this ); + } + + faad_decode_audio(this, buf->decoder_flags & BUF_FLAG_FRAME_END ); + } +} + +static void faad_discontinuity (audio_decoder_t *this_gen) { +} + +static void faad_dispose (audio_decoder_t *this_gen) { + + faad_decoder_t *this = (faad_decoder_t *) this_gen; + + if (this->output_open) + this->stream->audio_out->close (this->stream->audio_out, this->stream); + this->output_open = 0; + + if( this->buf ) + free(this->buf); + this->buf = NULL; + this->size = 0; + this->max_audio_src_size = 0; + + if( this->dec_config ) + free(this->dec_config); + this->dec_config = NULL; + this->dec_config_size = 0; + + if( this->faac_dec ) + NeAACDecClose(this->faac_dec); + this->faac_dec = NULL; + this->faac_failed = 0; + + free (this); +} + + +static audio_decoder_t *open_plugin (audio_decoder_class_t *class_gen, xine_stream_t *stream) { + + faad_decoder_t *this ; + + this = calloc(1, sizeof (faad_decoder_t)); + + this->audio_decoder.decode_data = faad_decode_data; + this->audio_decoder.reset = faad_reset; + this->audio_decoder.discontinuity = faad_discontinuity; + this->audio_decoder.dispose = faad_dispose; + + this->stream = stream; + this->output_open = 0; + this->raw_mode = 1; + this->faac_dec = NULL; + this->faac_failed = 0; + this->buf = NULL; + this->size = 0; + this->max_audio_src_size = 0; + this->dec_config = NULL; + this->dec_config_size = 0; + this->total_time = 0; + this->total_data = 0; + + this->rate = 0; + + return &this->audio_decoder; +} + +static void *init_plugin (xine_t *xine, void *data) { + + faad_class_t *this ; + + this = calloc(1, sizeof (faad_class_t)); + + this->decoder_class.open_plugin = open_plugin; + this->decoder_class.identifier = "FAAD"; + this->decoder_class.description = N_("Freeware Advanced Audio Decoder"); + this->decoder_class.dispose = default_audio_decoder_class_dispose; + + return this; +} + +static const uint32_t audio_types[] = { + BUF_AUDIO_AAC, 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, 16, "faad", XINE_VERSION_CODE, &dec_info_audio, init_plugin }, + { PLUGIN_NONE, 0, "", 0, NULL, NULL } +}; |