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mpv/libmpcodecs/ad_libvorbis.c
diego 5351098826 Create a separate codecs.conf entry for Tremor and use it if MPlayer is
with Tremor support instead of libvorbis. Previously MPlayer would show
the same output on the console when decoding with libvorbis and Tremor.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28014 b3059339-0415-0410-9bf9-f77b7e298cf2
2008-11-24 08:31:44 +00:00

334 lines
9.2 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <math.h>
#include "config.h"
#include "ad_internal.h"
#include "libaf/reorder_ch.h"
static ad_info_t info =
{
"Ogg/Vorbis audio decoder",
#ifdef CONFIG_TREMOR
"tremor",
#else
"libvorbis",
#endif
"Felix Buenemann, A'rpi",
"libvorbis",
""
};
LIBAD_EXTERN(libvorbis)
#ifdef CONFIG_TREMOR
#include <tremor/ivorbiscodec.h>
#else
#include <vorbis/codec.h>
#endif
// This struct is also defined in demux_ogg.c => common header ?
typedef struct ov_struct_st {
vorbis_info vi; /* struct that stores all the static vorbis bitstream
settings */
vorbis_comment vc; /* struct that stores all the bitstream user comments */
vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
vorbis_block vb; /* local working space for packet->PCM decode */
float rg_scale; /* replaygain scale */
#ifdef CONFIG_TREMOR
int rg_scale_int;
#endif
} ov_struct_t;
static int read_vorbis_comment( char* ptr, const char* comment, const char* format, ... ) {
va_list va;
int clen, ret;
va_start( va, format );
clen = strlen( comment );
ret = strncasecmp( ptr, comment, clen) == 0 ? vsscanf( ptr+clen, format, va ) : 0;
va_end( va );
return ret;
}
static int preinit(sh_audio_t *sh)
{
sh->audio_out_minsize=1024*4; // 1024 samples/frame
return 1;
}
static int init(sh_audio_t *sh)
{
unsigned int offset, i, length, hsizes[3];
void *headers[3];
unsigned char* extradata;
ogg_packet op;
vorbis_comment vc;
struct ov_struct_st *ov;
#define ERROR() { \
vorbis_comment_clear(&vc); \
vorbis_info_clear(&ov->vi); \
free(ov); \
return 0; \
}
/// Init the decoder with the 3 header packets
ov = malloc(sizeof(struct ov_struct_st));
vorbis_info_init(&ov->vi);
vorbis_comment_init(&vc);
if(! sh->wf) {
mp_msg(MSGT_DECAUDIO,MSGL_ERR,"ad_vorbis, extradata seems to be absent! exit\n");
ERROR();
}
if(! sh->wf->cbSize) {
mp_msg(MSGT_DECAUDIO,MSGL_ERR,"ad_vorbis, extradata seems to be absent!, exit\n");
ERROR();
}
mp_msg(MSGT_DECAUDIO,MSGL_V,"ad_vorbis, extradata seems is %d bytes long\n", sh->wf->cbSize);
extradata = (char*) (sh->wf+1);
if(!extradata) {
mp_msg(MSGT_DECAUDIO,MSGL_ERR,"ad_vorbis, extradata seems to be NULL!, exit\n");
ERROR();
}
if(*extradata != 2) {
mp_msg (MSGT_DEMUX, MSGL_WARN, "ad_vorbis: Vorbis track does not contain valid headers.\n");
ERROR();
}
offset = 1;
for (i=0; i < 2; i++) {
length = 0;
while ((extradata[offset] == (unsigned char) 0xFF) && length < sh->wf->cbSize) {
length += 255;
offset++;
}
if(offset >= (sh->wf->cbSize - 1)) {
mp_msg (MSGT_DEMUX, MSGL_WARN, "ad_vorbis: Vorbis track does not contain valid headers.\n");
ERROR();
}
length += extradata[offset];
offset++;
mp_msg (MSGT_DEMUX, MSGL_V, "ad_vorbis, offset: %u, length: %u\n", offset, length);
hsizes[i] = length;
}
headers[0] = &extradata[offset];
headers[1] = &extradata[offset + hsizes[0]];
headers[2] = &extradata[offset + hsizes[0] + hsizes[1]];
hsizes[2] = sh->wf->cbSize - offset - hsizes[0] - hsizes[1];
mp_msg (MSGT_DEMUX, MSGL_V, "ad_vorbis, header sizes: %d %d %d\n", hsizes[0], hsizes[1], hsizes[2]);
for(i=0; i<3; i++) {
op.bytes = hsizes[i];
op.packet = headers[i];
op.b_o_s = (i == 0);
if(vorbis_synthesis_headerin(&ov->vi,&vc,&op) <0) {
mp_msg(MSGT_DECAUDIO,MSGL_ERR,"OggVorbis: header n. %d broken! len=%ld\n", i, op.bytes);
ERROR();
}
if(i == 2) {
float rg_gain=0.f, rg_peak=0.f;
char **ptr=vc.user_comments;
while(*ptr){
mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbisComment: %s\n",*ptr);
/* replaygain */
read_vorbis_comment( *ptr, "replaygain_album_gain=", "%f", &rg_gain );
read_vorbis_comment( *ptr, "rg_audiophile=", "%f", &rg_gain );
if( !rg_gain ) {
read_vorbis_comment( *ptr, "replaygain_track_gain=", "%f", &rg_gain );
read_vorbis_comment( *ptr, "rg_radio=", "%f", &rg_gain );
}
read_vorbis_comment( *ptr, "replaygain_album_peak=", "%f", &rg_peak );
if( !rg_peak ) {
read_vorbis_comment( *ptr, "replaygain_track_peak=", "%f", &rg_peak );
read_vorbis_comment( *ptr, "rg_peak=", "%f", &rg_peak );
}
++ptr;
}
/* replaygain: scale */
if(!rg_gain)
ov->rg_scale = 1.f; /* just in case pow() isn't standard-conformant */
else
ov->rg_scale = pow(10.f, rg_gain/20);
/* replaygain: anticlip */
if(ov->rg_scale * rg_peak > 1.f)
ov->rg_scale = 1.f / rg_peak;
/* replaygain: security */
if(ov->rg_scale > 15.)
ov->rg_scale = 15.;
#ifdef CONFIG_TREMOR
ov->rg_scale_int = (int)(ov->rg_scale*64.f);
#endif
mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Bitstream is %d channel%s, %dHz, %dbit/s %cBR\n",(int)ov->vi.channels,ov->vi.channels>1?"s":"",(int)ov->vi.rate,(int)ov->vi.bitrate_nominal,
(ov->vi.bitrate_lower!=ov->vi.bitrate_nominal)||(ov->vi.bitrate_upper!=ov->vi.bitrate_nominal)?'V':'C');
if(rg_gain || rg_peak)
mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Gain = %+.2f dB, Peak = %.4f, Scale = %.2f\n", rg_gain, rg_peak, ov->rg_scale);
mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Encoded by: %s\n",vc.vendor);
}
}
vorbis_comment_clear(&vc);
// printf("lower=%d upper=%d \n",(int)ov->vi.bitrate_lower,(int)ov->vi.bitrate_upper);
// Setup the decoder
sh->channels=ov->vi.channels;
sh->samplerate=ov->vi.rate;
sh->samplesize=2;
// assume 128kbit if bitrate not specified in the header
sh->i_bps=((ov->vi.bitrate_nominal>0) ? ov->vi.bitrate_nominal : 128000)/8;
sh->context = ov;
/// Finish the decoder init
vorbis_synthesis_init(&ov->vd,&ov->vi);
vorbis_block_init(&ov->vd,&ov->vb);
mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Init OK!\n");
return 1;
}
static void uninit(sh_audio_t *sh)
{
struct ov_struct_st *ov = sh->context;
vorbis_dsp_clear(&ov->vd);
vorbis_block_clear(&ov->vb);
vorbis_info_clear(&ov->vi);
free(ov);
}
static int control(sh_audio_t *sh,int cmd,void* arg, ...)
{
switch(cmd)
{
#if 0
case ADCTRL_RESYNC_STREAM:
return CONTROL_TRUE;
case ADCTRL_SKIP_FRAME:
return CONTROL_TRUE;
#endif
}
return CONTROL_UNKNOWN;
}
static int decode_audio(sh_audio_t *sh,unsigned char *buf,int minlen,int maxlen)
{
int len = 0;
int samples;
#ifdef CONFIG_TREMOR
ogg_int32_t **pcm;
#else
float scale;
float **pcm;
#endif
struct ov_struct_st *ov = sh->context;
while(len < minlen) {
while((samples=vorbis_synthesis_pcmout(&ov->vd,&pcm))<=0){
ogg_packet op;
double pts;
memset(&op,0,sizeof(op)); //op.b_o_s = op.e_o_s = 0;
op.bytes = ds_get_packet_pts(sh->ds,&op.packet, &pts);
if(op.bytes<=0) break;
if (pts != MP_NOPTS_VALUE) {
sh->pts = pts;
sh->pts_bytes = 0;
}
if(vorbis_synthesis(&ov->vb,&op)==0) /* test for success! */
vorbis_synthesis_blockin(&ov->vd,&ov->vb);
}
if(samples<=0) break; // error/EOF
while(samples>0){
int i,j;
int clipflag=0;
int convsize=(maxlen-len)/(2*ov->vi.channels); // max size!
int bout=((samples<convsize)?samples:convsize);
if(bout<=0) break; // no buffer space
/* convert floats to 16 bit signed ints (host order) and
interleave */
#ifdef CONFIG_TREMOR
if (ov->rg_scale_int == 64) {
for(i=0;i<ov->vi.channels;i++){
ogg_int16_t *convbuffer=(ogg_int16_t *)(&buf[len]);
ogg_int16_t *ptr=convbuffer+i;
ogg_int32_t *mono=pcm[i];
for(j=0;j<bout;j++){
int val=mono[j]>>9;
/* might as well guard against clipping */
if(val>32767){
val=32767;
clipflag=1;
}
if(val<-32768){
val=-32768;
clipflag=1;
}
*ptr=val;
ptr+=ov->vi.channels;
}
}
} else
#endif /* CONFIG_TREMOR */
{
#ifndef CONFIG_TREMOR
scale = 32767.f * ov->rg_scale;
#endif
for(i=0;i<ov->vi.channels;i++){
ogg_int16_t *convbuffer=(ogg_int16_t *)(&buf[len]);
ogg_int16_t *ptr=convbuffer+i;
#ifdef CONFIG_TREMOR
ogg_int32_t *mono=pcm[i];
for(j=0;j<bout;j++){
int val=(mono[j]*ov->rg_scale_int)>>(9+6);
#else
float *mono=pcm[i];
for(j=0;j<bout;j++){
int val=mono[j]*scale;
/* might as well guard against clipping */
if(val>32767){
val=32767;
clipflag=1;
}
if(val<-32768){
val=-32768;
clipflag=1;
}
#endif /* CONFIG_TREMOR */
*ptr=val;
ptr+=ov->vi.channels;
}
}
}
if(clipflag)
mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"Clipping in frame %ld\n",(long)(ov->vd.sequence));
len+=2*ov->vi.channels*bout;
sh->pts_bytes += 2*ov->vi.channels*bout;
mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"\n[decoded: %d / %d ]\n",bout,samples);
samples-=bout;
vorbis_synthesis_read(&ov->vd,bout); /* tell libvorbis how
many samples we
actually consumed */
} //while(samples>0)
// if (!samples) break; // why? how?
}
if (len > 0 && ov->vi.channels >= 5) {
reorder_channel_nch(buf, AF_CHANNEL_LAYOUT_VORBIS_DEFAULT,
AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT,
ov->vi.channels, len / sh->samplesize,
sh->samplesize);
}
return len;
}