+++ /dev/null
-/*
- * Faad decoder
- * Copyright (c) 2003 Zdenek Kabelac.
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/**
- * @file faad.c
- * AAC decoder.
- *
- * still a bit unfinished - but it plays something
- */
-
-#include "avcodec.h"
-#include "faad.h"
-
-/*
- * when CONFIG_FAADBIN is defined the libfaad will be opened at runtime
- */
-//#undef CONFIG_FAADBIN
-//#define CONFIG_FAADBIN
-
-#ifdef CONFIG_FAADBIN
-#include <dlfcn.h>
-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 frame_size;
- int sample_size;
- int flags;
-
- /* faad calls */
- faacDecHandle FAADAPI (*faacDecOpen)(void);
- faacDecConfigurationPtr FAADAPI (*faacDecGetCurrentConfiguration)(faacDecHandle hDecoder);
- unsigned char FAADAPI (*faacDecSetConfiguration)(faacDecHandle hDecoder,
- faacDecConfigurationPtr config);
- long FAADAPI (*faacDecInit)(faacDecHandle hDecoder,
- unsigned char *buffer,
- 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 (*faacDecClose)(faacDecHandle hDecoder);
- void* FAADAPI (*faacDecDecode)(faacDecHandle hDecoder,
- faacDecFrameInfo *hInfo,
- unsigned char *buffer);
- unsigned char* FAADAPI (*faacDecGetErrorMessage)(unsigned char errcode);
-} 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 = (FAACContext *) avctx->priv_data;
- unsigned long samplerate;
- unsigned char channels;
- int r = 0;
-
- if (avctx->extradata)
- r = s->faacDecInit2(s->faac_handle, (uint8_t*) avctx->extradata,
- avctx->extradata_size,
- &samplerate, &channels);
- // else r = s->faacDecInit(s->faac_handle ... );
-
- if (r < 0)
- fprintf(stderr, "faacDecInit2 failed r:%d sr:%ld ch:%d s:%d\n",
- r, samplerate, channels, avctx->extradata_size);
-
- return r;
-}
-
-static int faac_init_aac(AVCodecContext *avctx)
-{
- FAACContext *s = (FAACContext *) avctx->priv_data;
- return 0;
-}
-
-static int faac_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- FAACContext *s = (FAACContext *) avctx->priv_data;
- faacDecFrameInfo frame_info;
- void* out = s->faacDecDecode(s->faac_handle, &frame_info, (unsigned char*)buf);
- //printf("DECODE FRAME %d, %d, %d - %p\n", buf_size, frame_info.samples, frame_info.bytesconsumed, out);
-
- if (frame_info.error > 0) {
- fprintf(stderr, "faac: frame decodinf failed: %s\n",
- s->faacDecGetErrorMessage(frame_info.error));
- return 0;
- }
-
- 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;
-}
-
-static int faac_decode_end(AVCodecContext *avctx)
-{
- FAACContext *s = (FAACContext *) avctx->priv_data;
-
- if (s->faacDecClose)
- s->faacDecClose(s->faac_handle);
-
- dlclose(s->handle);
- return 0;
-}
-
-static int faac_decode_init(AVCodecContext *avctx)
-{
- FAACContext *s = (FAACContext *) avctx->priv_data;
- faacDecConfigurationPtr faac_cfg;
-
-#ifdef CONFIG_FAADBIN
- const char* err = 0;
-
- s->handle = dlopen(libfaadname, RTLD_LAZY);
- if (!s->handle)
- {
- fprintf(stderr, "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_FAADBIN */
-#define dfaac(a, b) s->faacDec ## a = faacDec ## a
-#endif /* CONFIG_FAADBIN */
-
- // resolve all needed function calls
- dfaac(Open, (faacDecHandle FAADAPI (*)(void)));
- dfaac(GetCurrentConfiguration, (faacDecConfigurationPtr
- FAADAPI (*)(faacDecHandle)));
- dfaac(SetConfiguration, (unsigned char FAADAPI (*)(faacDecHandle,
- faacDecConfigurationPtr)));
-
- dfaac(Init, (long FAADAPI (*)(faacDecHandle, unsigned char*,
- unsigned long*, unsigned char*)));
- dfaac(Init2, (char FAADAPI (*)(faacDecHandle, unsigned char*,
- unsigned long, unsigned long*,
- unsigned char*)));
- dfaac(Close, (void FAADAPI (*)(faacDecHandle hDecoder)));
- dfaac(Decode, (void* FAADAPI (*)(faacDecHandle, faacDecFrameInfo*,
- unsigned char*)));
-
- dfaac(GetErrorMessage, (unsigned char* FAADAPI (*)(unsigned char)));
-#undef dfacc
-
-#ifdef CONFIG_FAADBIN
- break;
- }
- if (err) {
- dlclose(s->handle);
- fprintf(stderr, "FAAD library: cannot resolve %s in %s!\n",
- err, libfaadname);
- return -1;
- }
-#endif
-
- s->faac_handle = s->faacDecOpen();
- if (!s->faac_handle) {
- fprintf(stderr, "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: fprintf(stderr, "FAADlib unsupported bps %d\n", avctx->bits_per_sample); break;
- default:
- case 16:
- faac_cfg->outputFormat = FAAD_FMT_16BIT;
- s->sample_size = 2;
- break;
- case 24:
- faac_cfg->outputFormat = FAAD_FMT_24BIT;
- s->sample_size = 3;
- break;
- case 32:
- faac_cfg->outputFormat = FAAD_FMT_32BIT;
- 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, aac);
-// If it's mp4 file - usually embeded into Qt Mov
-AAC_CODEC(CODEC_ID_MPEG4AAC, mpeg4aac);
-
-#undef AAC_CODEC
projects / synfig.git / blobdiff