Updating Opus to a pre-release of 1.1

src/opus_demo.c

Index: src/opus_demo.c
diff --git a/src/opus_demo.c b/src/opus_demo.c
index 09b12a333d16560c0676078964b01cd000ba73f5..9771ed8bb81c3914e743da7a7520a9477d7573ee 100644
--- a/src/opus_demo.c
+++ b/src/opus_demo.c
@@ -38,6 +38,7 @@
 #include "debug.h"
 #include "opus_types.h"
 #include "opus_private.h"
+#include "opus_multistream.h"
 
 #define MAX_PACKET 1500
 
@@ -53,6 +54,7 @@ void print_usage( char* argv[] )
     fprintf(stderr, "-d                   : only runs the decoder (reads the bit-stream as input)\n" );
     fprintf(stderr, "-cbr                 : enable constant bitrate; default: variable bitrate\n" );
     fprintf(stderr, "-cvbr                : enable constrained variable bitrate; default: unconstrained\n" );
+    fprintf(stderr, "-variable-duration   : enable frames of variable duration (experts only); default: disabled\n" );
     fprintf(stderr, "-bandwidth <NB|MB|WB|SWB|FB> : audio bandwidth (from narrowband to fullband); default: sampling rate\n" );
     fprintf(stderr, "-framesize <2.5|5|10|20|40|60> : frame size in ms; default: 20 \n" );
     fprintf(stderr, "-max_payload <bytes> : maximum payload size in bytes, default: 1024\n" );
@@ -192,6 +194,35 @@ static const int celt_hq_test[][4] = {
       {MODE_CELT_ONLY, OPUS_BANDWIDTH_FULLBAND,      120, 2},
 };
 
+#if 0 /* This is a hack that replaces the normal encoder/decoder with the multistream version */
+#define OpusEncoder OpusMSEncoder
+#define OpusDecoder OpusMSDecoder
+#define opus_encode opus_multistream_encode
+#define opus_decode opus_multistream_decode
+#define opus_encoder_ctl opus_multistream_encoder_ctl
+#define opus_decoder_ctl opus_multistream_decoder_ctl
+#define opus_encoder_create ms_opus_encoder_create
+#define opus_decoder_create ms_opus_decoder_create
+#define opus_encoder_destroy opus_multistream_encoder_destroy
+#define opus_decoder_destroy opus_multistream_decoder_destroy
+
+static OpusEncoder *ms_opus_encoder_create(opus_int32 Fs, int channels, int application, int *error)
+{
+   int streams, coupled_streams;
+   unsigned char mapping[256];
+   return (OpusEncoder *)opus_multistream_surround_encoder_create(Fs, channels, 1, &streams, &coupled_streams, mapping, application, error);
+}
+static OpusDecoder *ms_opus_decoder_create(opus_int32 Fs, int channels, int *error)
+{
+   int streams;
+   int coupled_streams;
+   unsigned char mapping[256]={0,1};
+   streams = 1;
+   coupled_streams = channels==2;
+   return (OpusDecoder *)opus_multistream_decoder_create(Fs, channels, streams, coupled_streams, mapping, error);
+}
+#endif
+
 int main(int argc, char *argv[])
 {
     int err;
@@ -221,6 +252,8 @@ int main(int argc, char *argv[])
     short *in, *out;
     int application=OPUS_APPLICATION_AUDIO;
     double bits=0.0, bits_max=0.0, bits_act=0.0, bits2=0.0, nrg;
+    double tot_samples=0;
+    opus_uint64 tot_in, tot_out;
     int bandwidth=-1;
     const char *bandwidth_string;
     int lost = 0, lost_prev = 1;
@@ -239,6 +272,10 @@ int main(int argc, char *argv[])
     int curr_mode=0;
     int curr_mode_count=0;
     int mode_switch_time = 48000;
+    int nb_encoded=0;
+    int remaining=0;
+    int variable_duration=OPUS_FRAMESIZE_ARG;
+    int delayed_decision=0;
 
     if (argc < 5 )
     {
@@ -246,6 +283,7 @@ int main(int argc, char *argv[])
        return EXIT_FAILURE;
     }
 
+    tot_in=tot_out=0;
     fprintf(stderr, "%s\n", opus_get_version_string());
 
     args = 1;
@@ -306,7 +344,7 @@ int main(int argc, char *argv[])
     forcechannels = OPUS_AUTO;
     use_dtx = 0;
     packet_loss_perc = 0;
-    max_frame_size = 960*6;
+    max_frame_size = 2*48000;
     curr_read=0;
 
     while( args < argc - 2 ) {
@@ -374,6 +412,14 @@ int main(int argc, char *argv[])
             check_encoder_option(decode_only, "-cvbr");
             cvbr = 1;
             args++;
+        } else if( strcmp( argv[ args ], "-variable-duration" ) == 0 ) {
+            check_encoder_option(decode_only, "-variable-duration");
+            variable_duration = OPUS_FRAMESIZE_VARIABLE;
+            args++;
+        } else if( strcmp( argv[ args ], "-delayed-decision" ) == 0 ) {
+            check_encoder_option(decode_only, "-delayed-decision");
+            delayed_decision = 1;
+            args++;
         } else if( strcmp( argv[ args ], "-dtx") == 0 ) {
             check_encoder_option(decode_only, "-dtx");
             use_dtx = 1;
@@ -499,6 +545,7 @@ int main(int argc, char *argv[])
 
        opus_encoder_ctl(enc, OPUS_GET_LOOKAHEAD(&skip));
        opus_encoder_ctl(enc, OPUS_SET_LSB_DEPTH(16));
+       opus_encoder_ctl(enc, OPUS_SET_EXPERT_FRAME_DURATION(variable_duration));
     }
     if (!encode_only)
     {
@@ -554,6 +601,26 @@ int main(int argc, char *argv[])
     if ( use_inbandfec ) {
         data[1] = (unsigned char*)calloc(max_payload_bytes,sizeof(char));
     }
+    if(delayed_decision)
+    {
+       if (variable_duration!=OPUS_FRAMESIZE_VARIABLE)
+       {
+          if (frame_size==sampling_rate/400)
+             variable_duration = OPUS_FRAMESIZE_2_5_MS;
+          else if (frame_size==sampling_rate/200)
+             variable_duration = OPUS_FRAMESIZE_5_MS;
+          else if (frame_size==sampling_rate/100)
+             variable_duration = OPUS_FRAMESIZE_10_MS;
+          else if (frame_size==sampling_rate/50)
+             variable_duration = OPUS_FRAMESIZE_20_MS;
+          else if (frame_size==sampling_rate/25)
+             variable_duration = OPUS_FRAMESIZE_40_MS;
+          else
+             variable_duration = OPUS_FRAMESIZE_60_MS;
+          opus_encoder_ctl(enc, OPUS_SET_EXPERT_FRAME_DURATION(variable_duration));
+       }
+       frame_size = 2*48000;
+    }
     while (!stop)
     {
         if (delayed_celt)
@@ -617,22 +684,28 @@ int main(int argc, char *argv[])
                 opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS(mode_list[curr_mode][3]));
                 frame_size = mode_list[curr_mode][2];
             }
-            err = fread(fbytes, sizeof(short)*channels, frame_size, fin);
+            err = fread(fbytes, sizeof(short)*channels, frame_size-remaining, fin);
             curr_read = err;
+            tot_in += curr_read;
             for(i=0;i<curr_read*channels;i++)
             {
                 opus_int32 s;
                 s=fbytes[2*i+1]<<8|fbytes[2*i];
                 s=((s&0xFFFF)^0x8000)-0x8000;
-                in[i]=s;
+                in[i+remaining*channels]=s;
             }
-            if (curr_read < frame_size)
+            if (curr_read+remaining < frame_size)
             {
-                for (i=curr_read*channels;i<frame_size*channels;i++)
+                for (i=(curr_read+remaining)*channels;i<frame_size*channels;i++)
                    in[i] = 0;
-                stop = 1;
+                if (encode_only || decode_only)
+                   stop = 1;
             }
             len[toggle] = opus_encode(enc, in, frame_size, data[toggle], max_payload_bytes);
+            nb_encoded = opus_packet_get_samples_per_frame(data[toggle], sampling_rate)*opus_packet_get_nb_frames(data[toggle], len[toggle]);
+            remaining = frame_size-nb_encoded;
+            for(i=0;i<remaining*channels;i++)
+               in[i] = in[nb_encoded*channels+i];
             if (sweep_bps!=0)
             {
                bitrate_bps += sweep_bps;
@@ -681,6 +754,7 @@ int main(int argc, char *argv[])
                fprintf(stderr, "Error writing.\n");
                return EXIT_FAILURE;
             }
+            tot_samples += nb_encoded;
         } else {
             int output_samples;
             lost = len[toggle]==0 || (packet_loss_perc>0 && rand()%100 < packet_loss_perc);
@@ -693,9 +767,11 @@ int main(int argc, char *argv[])
                 if( use_inbandfec  ) {
                     if( lost_prev ) {
                         /* attempt to decode with in-band FEC from next packet */
+                        opus_decoder_ctl(dec, OPUS_GET_LAST_PACKET_DURATION(&output_samples));
                         output_samples = opus_decode(dec, lost ? NULL : data[toggle], len[toggle], out, output_samples, 1);
                     } else {
                         /* regular decode */
+                        output_samples = max_frame_size;
                         output_samples = opus_decode(dec, data[1-toggle], len[1-toggle], out, output_samples, 0);
                     }
                 } else {
@@ -703,6 +779,11 @@ int main(int argc, char *argv[])
                 }
                 if (output_samples>0)
                 {
+                    if (!decode_only && tot_out + output_samples > tot_in)
+                    {
+                       stop=1;
+                       output_samples  = tot_in-tot_out;
+                    }
                     if (output_samples>skip) {
                        int i;
                        for(i=0;i<(output_samples-skip)*channels;i++)
@@ -716,6 +797,7 @@ int main(int argc, char *argv[])
                           fprintf(stderr, "Error writing.\n");
                           return EXIT_FAILURE;
                        }
+                       tot_out += output_samples-skip;
                     }
                     if (output_samples<skip) skip -= output_samples;
                     else skip = 0;
@@ -723,6 +805,7 @@ int main(int argc, char *argv[])
                    fprintf(stderr, "error decoding frame: %s\n",
                                    opus_strerror(output_samples));
                 }
+                tot_samples += output_samples;
             }
         }
 
@@ -767,7 +850,7 @@ int main(int argc, char *argv[])
         toggle = (toggle + use_inbandfec) & 1;
     }
     fprintf (stderr, "average bitrate:             %7.3f kb/s\n",
-                     1e-3*bits*sampling_rate/(frame_size*(double)count));
+                     1e-3*bits*sampling_rate/tot_samples);
     fprintf (stderr, "maximum bitrate:             %7.3f kb/s\n",
                      1e-3*bits_max*sampling_rate/frame_size);
     if (!decode_only)