From 6f1af73557824b1872732b7823e881a14f870077 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Wed, 6 Jun 2007 00:14:18 +0000 Subject: Give all wrappers for external libraries names starting with lib. Originally committed as revision 9226 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/libfaad.c | 333 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 333 insertions(+) create mode 100644 libavcodec/libfaad.c (limited to 'libavcodec/libfaad.c') diff --git a/libavcodec/libfaad.c b/libavcodec/libfaad.c new file mode 100644 index 0000000000..8c265e397b --- /dev/null +++ b/libavcodec/libfaad.c @@ -0,0 +1,333 @@ +/* + * Faad decoder + * Copyright (c) 2003 Zdenek Kabelac. + * Copyright (c) 2004 Thomas Raivio. + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file faad.c + * AAC decoder. + * + * still a bit unfinished - but it plays something + */ + +#include "avcodec.h" +#include "faad.h" + +#ifndef FAADAPI +#define FAADAPI +#endif + +/* + * when CONFIG_LIBFAADBIN is defined the libfaad will be opened at runtime + */ +//#undef CONFIG_LIBFAADBIN +//#define CONFIG_LIBFAADBIN + +#ifdef CONFIG_LIBFAADBIN +#include +static const char* libfaadname = "libfaad.so.0"; +#else +#define dlopen(a) +#define dlclose(a) +#endif + +typedef struct { + void* handle; /* dlopen handle */ + void* faac_handle; /* FAAD library handle */ + int sample_size; + int init; + + /* faad calls */ + faacDecHandle FAADAPI (*faacDecOpen)(void); + faacDecConfigurationPtr FAADAPI (*faacDecGetCurrentConfiguration)(faacDecHandle hDecoder); +#ifndef FAAD2_VERSION + int FAADAPI (*faacDecSetConfiguration)(faacDecHandle hDecoder, + faacDecConfigurationPtr config); + int FAADAPI (*faacDecInit)(faacDecHandle hDecoder, + unsigned char *buffer, + unsigned long *samplerate, + unsigned long *channels); + int FAADAPI (*faacDecInit2)(faacDecHandle hDecoder, unsigned char *pBuffer, + unsigned long SizeOfDecoderSpecificInfo, + unsigned long *samplerate, unsigned long *channels); + int FAADAPI (*faacDecDecode)(faacDecHandle hDecoder, + unsigned char *buffer, + unsigned long *bytesconsumed, + short *sample_buffer, + unsigned long *samples); +#else + unsigned char FAADAPI (*faacDecSetConfiguration)(faacDecHandle hDecoder, + faacDecConfigurationPtr config); + long FAADAPI (*faacDecInit)(faacDecHandle hDecoder, + unsigned char *buffer, + unsigned long buffer_size, + unsigned long *samplerate, + unsigned char *channels); + char FAADAPI (*faacDecInit2)(faacDecHandle hDecoder, unsigned char *pBuffer, + unsigned long SizeOfDecoderSpecificInfo, + unsigned long *samplerate, unsigned char *channels); + void *FAADAPI (*faacDecDecode)(faacDecHandle hDecoder, + faacDecFrameInfo *hInfo, + unsigned char *buffer, + unsigned long buffer_size); + char* FAADAPI (*faacDecGetErrorMessage)(unsigned char errcode); +#endif + + void FAADAPI (*faacDecClose)(faacDecHandle hDecoder); + + +} FAACContext; + +static const unsigned long faac_srates[] = +{ + 96000, 88200, 64000, 48000, 44100, 32000, + 24000, 22050, 16000, 12000, 11025, 8000 +}; + +static int faac_init_mp4(AVCodecContext *avctx) +{ + FAACContext *s = avctx->priv_data; + unsigned long samplerate; +#ifndef FAAD2_VERSION + unsigned long channels; +#else + unsigned char channels; +#endif + int r = 0; + + if (avctx->extradata){ + r = s->faacDecInit2(s->faac_handle, (uint8_t*) avctx->extradata, + avctx->extradata_size, + &samplerate, &channels); + if (r < 0){ + av_log(avctx, AV_LOG_ERROR, + "faacDecInit2 failed r:%d sr:%ld ch:%ld s:%d\n", + r, samplerate, (long)channels, avctx->extradata_size); + } else { + avctx->sample_rate = samplerate; + avctx->channels = channels; + s->init = 1; + } + } + + return r; +} + +static int faac_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + FAACContext *s = avctx->priv_data; +#ifndef FAAD2_VERSION + unsigned long bytesconsumed; + short *sample_buffer = NULL; + unsigned long samples; + int out; +#else + faacDecFrameInfo frame_info; + void *out; +#endif + if(buf_size == 0) + return 0; +#ifndef FAAD2_VERSION + out = s->faacDecDecode(s->faac_handle, + (unsigned char*)buf, + &bytesconsumed, + data, + &samples); + samples *= s->sample_size; + if (data_size) + *data_size = samples; + return (buf_size < (int)bytesconsumed) + ? buf_size : (int)bytesconsumed; +#else + + if(!s->init){ + unsigned long srate; + unsigned char channels; + int r = s->faacDecInit(s->faac_handle, buf, buf_size, &srate, &channels); + if(r < 0){ + av_log(avctx, AV_LOG_ERROR, "faac: codec init failed: %s\n", + s->faacDecGetErrorMessage(frame_info.error)); + return -1; + } + avctx->sample_rate = srate; + avctx->channels = channels; + s->init = 1; + } + + out = s->faacDecDecode(s->faac_handle, &frame_info, (unsigned char*)buf, (unsigned long)buf_size); + + if (frame_info.error > 0) { + av_log(avctx, AV_LOG_ERROR, "faac: frame decoding failed: %s\n", + s->faacDecGetErrorMessage(frame_info.error)); + return -1; + } + + frame_info.samples *= s->sample_size; + memcpy(data, out, frame_info.samples); // CHECKME - can we cheat this one + + if (data_size) + *data_size = frame_info.samples; + + return (buf_size < (int)frame_info.bytesconsumed) + ? buf_size : (int)frame_info.bytesconsumed; +#endif +} + +static int faac_decode_end(AVCodecContext *avctx) +{ + FAACContext *s = avctx->priv_data; + + s->faacDecClose(s->faac_handle); + + dlclose(s->handle); + return 0; +} + +static int faac_decode_init(AVCodecContext *avctx) +{ + FAACContext *s = avctx->priv_data; + faacDecConfigurationPtr faac_cfg; + +#ifdef CONFIG_LIBFAADBIN + const char* err = 0; + + s->handle = dlopen(libfaadname, RTLD_LAZY); + if (!s->handle) + { + av_log(avctx, AV_LOG_ERROR, "FAAD library: %s could not be opened! \n%s\n", + libfaadname, dlerror()); + return -1; + } +#define dfaac(a, b) \ + do { static const char* n = "faacDec" #a; \ + if ((s->faacDec ## a = b dlsym( s->handle, n )) == NULL) { err = n; break; } } while(0) + for(;;) { +#else /* !CONFIG_LIBFAADBIN */ +#define dfaac(a, b) s->faacDec ## a = faacDec ## a +#endif /* CONFIG_LIBFAADBIN */ + + // resolve all needed function calls + dfaac(Open, (faacDecHandle FAADAPI (*)(void))); + dfaac(Close, (void FAADAPI (*)(faacDecHandle hDecoder))); + dfaac(GetCurrentConfiguration, (faacDecConfigurationPtr + FAADAPI (*)(faacDecHandle))); +#ifndef FAAD2_VERSION + dfaac(SetConfiguration, (int FAADAPI (*)(faacDecHandle, + faacDecConfigurationPtr))); + + dfaac(Init, (int FAADAPI (*)(faacDecHandle, unsigned char*, + unsigned long*, unsigned long*))); + dfaac(Init2, (int FAADAPI (*)(faacDecHandle, unsigned char*, + unsigned long, unsigned long*, + unsigned long*))); + dfaac(Decode, (int FAADAPI (*)(faacDecHandle, unsigned char*, + unsigned long*, short*, unsigned long*))); +#else + dfaac(SetConfiguration, (unsigned char FAADAPI (*)(faacDecHandle, + faacDecConfigurationPtr))); + dfaac(Init, (long FAADAPI (*)(faacDecHandle, unsigned char*, + unsigned long, unsigned long*, unsigned char*))); + dfaac(Init2, (char FAADAPI (*)(faacDecHandle, unsigned char*, + unsigned long, unsigned long*, + unsigned char*))); + dfaac(Decode, (void *FAADAPI (*)(faacDecHandle, faacDecFrameInfo*, + unsigned char*, unsigned long))); + dfaac(GetErrorMessage, (char* FAADAPI (*)(unsigned char))); +#endif +#undef dfacc + +#ifdef CONFIG_LIBFAADBIN + break; + } + if (err) { + dlclose(s->handle); + av_log(avctx, AV_LOG_ERROR, "FAAD library: cannot resolve %s in %s!\n", + err, libfaadname); + return -1; + } +#endif + + s->faac_handle = s->faacDecOpen(); + if (!s->faac_handle) { + av_log(avctx, AV_LOG_ERROR, "FAAD library: cannot create handler!\n"); + faac_decode_end(avctx); + return -1; + } + + + faac_cfg = s->faacDecGetCurrentConfiguration(s->faac_handle); + + if (faac_cfg) { + switch (avctx->bits_per_sample) { + case 8: av_log(avctx, AV_LOG_ERROR, "FAADlib unsupported bps %d\n", avctx->bits_per_sample); break; + default: + case 16: +#ifdef FAAD2_VERSION + faac_cfg->outputFormat = FAAD_FMT_16BIT; +#endif + s->sample_size = 2; + break; + case 24: +#ifdef FAAD2_VERSION + faac_cfg->outputFormat = FAAD_FMT_24BIT; +#endif + s->sample_size = 3; + break; + case 32: +#ifdef FAAD2_VERSION + faac_cfg->outputFormat = FAAD_FMT_32BIT; +#endif + s->sample_size = 4; + break; + } + + faac_cfg->defSampleRate = (!avctx->sample_rate) ? 44100 : avctx->sample_rate; + faac_cfg->defObjectType = LC; + } + + s->faacDecSetConfiguration(s->faac_handle, faac_cfg); + + faac_init_mp4(avctx); + + return 0; +} + +#define AAC_CODEC(id, name) \ +AVCodec name ## _decoder = { \ + #name, \ + CODEC_TYPE_AUDIO, \ + id, \ + sizeof(FAACContext), \ + faac_decode_init, \ + NULL, \ + faac_decode_end, \ + faac_decode_frame, \ +} + +// FIXME - raw AAC files - maybe just one entry will be enough +AAC_CODEC(CODEC_ID_AAC, libfaad); +#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0) +// If it's mp4 file - usually embeded into Qt Mov +AAC_CODEC(CODEC_ID_MPEG4AAC, mpeg4aac); +#endif + +#undef AAC_CODEC -- cgit v1.2.3