diff options
-rw-r--r-- | dec_audio.c | 29 | ||||
-rw-r--r-- | libmpdemux/demux_mov.c | 70 |
2 files changed, 86 insertions, 13 deletions
diff --git a/dec_audio.c b/dec_audio.c index c92579c364..327f7b5ed8 100644 --- a/dec_audio.c +++ b/dec_audio.c @@ -328,15 +328,17 @@ int mplayer_audio_read(char *buf,int size){ int init_audio(sh_audio_t *sh_audio){ int driver=sh_audio->codec->driver; -sh_audio->samplesize=2; +if(!sh_audio->samplesize) + sh_audio->samplesize=2; +if(!sh_audio->sample_format) #ifdef WORDS_BIGENDIAN -sh_audio->sample_format=AFMT_S16_BE; + sh_audio->sample_format=AFMT_S16_BE; #else -sh_audio->sample_format=AFMT_S16_LE; + sh_audio->sample_format=AFMT_S16_LE; #endif -sh_audio->samplerate=0; +//sh_audio->samplerate=0; //sh_audio->pcm_bswap=0; -sh_audio->o_bps=0; +//sh_audio->o_bps=0; sh_audio->a_buffer_size=0; sh_audio->a_buffer=NULL; @@ -840,16 +842,15 @@ case AFM_AAC: { faacDecConfigurationPtr faac_conf; faac_hdec = faacDecOpen(); -#if 0 +#if 1 /* Set the default object type and samplerate */ /* This is useful for RAW AAC files */ faac_conf = faacDecGetCurrentConfiguration(faac_hdec); if(sh_audio->samplerate) faac_conf->defSampleRate = sh_audio->samplerate; - /* XXX: is outputFormat samplesize of compressed data or samplesize of - * decoded data, maybe upsampled? Also, FAAD support FLOAT output, - * how do we handle that (FAAD_FMT_FLOAT)? ::atmos - */ + /* XXX: FAAD support FLOAT output, how do we handle + * that (FAAD_FMT_FLOAT)? ::atmos + */ if(sh_audio->samplesize) switch(sh_audio->samplesize){ case 1: // 8Bit @@ -865,7 +866,7 @@ case AFM_AAC: { faac_conf->outputFormat = FAAD_FMT_32BIT; break; } - faac_conf->defObjectType = LTP; // => MAIN, LC, SSR, LTP available. + //faac_conf->defObjectType = LTP; // => MAIN, LC, SSR, LTP available. faacDecSetConfiguration(faac_hdec, faac_conf); #endif @@ -887,7 +888,11 @@ case AFM_AAC: { mp_msg(MSGT_DECAUDIO,MSGL_V,"FAAD: Negotiated samplerate: %dHz channels: %d\n", faac_samplerate, faac_channels); sh_audio->channels = faac_channels; sh_audio->samplerate = faac_samplerate; - sh_audio->i_bps = 128*1000/8; // XXX: HACK!!! There's currently no way to get bitrate from libfaad2! ::atmos + if(!sh_audio->i_bps) { + mp_msg(MSGT_DECAUDIO,MSGL_WARN,"FAAD: compressed input bitrate missing, assuming 128kbit/s!\n"); + sh_audio->i_bps = 128*1000/8; // XXX: HACK!!! There's currently no way to get bitrate from libfaad2! ::atmos + } else + mp_msg(MSGT_DECAUDIO,MSGL_V,"FAAD: got %dkbit/s rate from MP4 header!\n",sh_audio->i_bps*8/1000); } } break; diff --git a/libmpdemux/demux_mov.c b/libmpdemux/demux_mov.c index 3bf5cbf141..385087f1cb 100644 --- a/libmpdemux/demux_mov.c +++ b/libmpdemux/demux_mov.c @@ -562,9 +562,37 @@ static void lschunks(demuxer_t* demuxer,int level,off_t endpos,mov_track_t* trak mov_build_index(trak); switch(trak->type){ case MOV_TRAK_AUDIO: { +#if 0 + struct { + int16_t version; // 0 or 1 (version 1 is qt3.0+) + int16_t revision; // 0 + int32_t vendor_id; // 0 + int16_t channels; // 1 or 2 (Mono/Stereo) + int16_t samplesize; // 8 or 16 (8Bit/16Bit) + int16_t compression_id; // if version 0 then 0 + // if version 1 and vbr then -2 else 0 + int16_t packet_size; // 0 + uint32_t sample_rate; // samplerate (Hz) + // qt3.0+ (version == 1) + uint32_t samples_per_packet; // 0 or num uncompressed samples in a packet + // if 0 below three values are also 0 + uint32_t bytes_per_packet; // 0 or num compressed bytes for one channel + uint32_t bytes_per_frame; // 0 or num compressed bytes for all channels + // (channels * bytes_per_packet) + uint32_t bytes_per_sample; // 0 or size of uncompressed sample + // if samples_per_packet and bytes_per_packet are constant (CBR) + // then bytes_per_frame and bytes_per_sample must be 0 (else is VBR) + // --- + // optional additional atom-based fields + // ([int32_t size,int32_t type,some data ],repeat) + } my_stdata; +#endif sh_audio_t* sh=new_sh_audio(demuxer,priv->track_db); sh->format=trak->fourcc; +// assumptions for below table: short is 16bit, int is 32bit +// short values are usually one byte leftpadded by zero +// int values are usually two byte leftpadded by zero // stdata[]: // 8 short version // 10 short revision @@ -579,8 +607,48 @@ static void lschunks(demuxer_t* demuxer,int level,off_t endpos,mov_track_t* trak // 32 int bytes_per_packet // 36 int bytes_per_frame // 40 int bytes_per_sample +// my recoveries from .mp4 files with correct index (counting from 0): +// it's always start with padding/real start +// 8/ 9 short version +// 10/11 short revision +// 12/14 int vendor_id +// 16/17 short channels +// 18/19 short samplesize +// 20/21 short compression_id +// 22/23 short packet_size (XXX: this overlaps with sample_rate ?) +// 22/24 int sample_rate +// esds atom: +// 28/31 int atom size (bytes of int size, int type and data) +// 32/32 int atom type (fourc charater code -> esds) +// 62/63 int compressed datarate (Bits) + +#define char2short(x,y) ((x[y]<<8)|x[y+1]) +#define char2int(x,y) ((x[y]<<24)|(x[y+1]<<16)|(x[y+2]<<8)|x[y+3]) + + sh->samplesize=char2short(trak->stdata,18)/8; + sh->channels=char2short(trak->stdata,16); + sh->samplerate=char2short(trak->stdata,24); - mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio bits: %d chans: %d\n",trak->stdata[19],trak->stdata[17]); + mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio bits: %d chans: %d\n", + trak->stdata[19],trak->stdata[17]); + mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio sample rate: %d\n", + char2short(trak->stdata,24)); + if((trak->stdata[9]==0) && trak->stdata_len >= 36) { // version 0 with extra atoms + int atom_len = char2int(trak->stdata,28); + switch(char2int(trak->stdata,32)) { // atom type + case MOV_FOURCC('e','s','d','s'): + mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: MP4 esds audio atom found (%d)!\n", atom_len); + if(atom_len >= 28) + mp_msg(MSGT_DEMUX, MSGL_INFO, "Audio compressed datarate: %dkbit/s\n", + char2int(trak->stdata,62)/1000); + sh->i_bps=char2int(trak->stdata,62)/8; + break; + default: + mp_msg(MSGT_DEMUX, MSGL_INFO, "MOV: unknown audio atom %c%c%c%c found (%d)!\n", + trak->stdata[32],trak->stdata[33],trak->stdata[34],trak->stdata[35], + atom_len); + } + } mp_msg(MSGT_DEMUX, MSGL_INFO, "Fourcc: %.4s\n",&trak->fourcc); #if 0 { FILE* f=fopen("stdata.dat","wb"); |