Changeset 139 for libmpc/branches/r2d/libmpcdec

Timestamp:

11/15/06 18:32:43 (18 years ago)

Author:

r2d

Message:

• added "SE" block check

Location:

libmpc/branches/r2d/libmpcdec

Files:

• internal.h (modified) (1 diff)
• mpc_demux.c (modified) (5 diffs)

libmpc/branches/r2d/libmpcdec/internal.h

@@ -72 +72 @@
         mpc_uint32_t bytes_total;
         mpc_bits_reader bits_reader;
-        mpc_uint32_t block_bits;        // bits remaining in current audio block
+        mpc_uint32_t block_bits; /// bits remaining in current audio block
+        mpc_bool_t end; /// end of stream flag
 };
 

libmpc/branches/r2d/libmpcdec/mpc_demux.c

@@ -138 +138 @@
                         if (memcmp(b.key, "SI", 2) == 0){
                                 int ret = streaminfo_read_header_sv8(&d->si, &d->bits_reader, b.size);
-                                if (ret != MPC_STATUS_OK)
-                                        return ret;
+                                if (ret != MPC_STATUS_OK) return ret;
                         } else if (memcmp(b.key, "EI", 2) == 0)
                                 streaminfo_encoder_info(&d->si, &d->bits_reader);
@@ -164 +163 @@
                 p_tmp->bits_reader.count = 8;
                 p_tmp->block_bits = 0;
+                p_tmp->end = MPC_FALSE;
                 // lire entête
                 if (mpc_demux_header(p_tmp) == MPC_STATUS_OK) {
@@ -192 +192 @@
         if (d->si.stream_version == 8) {
                 mpc_bits_reader r;
-                if (d->block_bits < 8 && (d->d->decoded_samples < d->d->samples || d->d->samples == 0)){
+                if (d->block_bits < 8 && d->end == MPC_FALSE){
                         mpc_block b;
                         d->bits_reader.count &= -8;
@@ -198 +198 @@
                         mpc_bits_get_block(&d->bits_reader, &b);
                         while( memcmp(b.key, "AD", 2) != 0 ){ // scan all blocks until audio
+                                if (memcmp(b.key, "SE", 2) == 0) // end block
+                                        d->end = MPC_TRUE;
                                 mpc_demux_fill(d, 11 + b.size, 0);
                                 d->bits_reader.buff += b.size;
@@ -218 +220 @@
 }
 
-// static mpc_uint32_t
-// mpc_decoder_decode_internal(mpc_decoder *d, MPC_SAMPLE_FORMAT *buffer)
-// {
-//      mpc_uint32_t output_frame_length = MPC_FRAME_LENGTH;
-//      mpc_uint32_t FwdJumpInfo = 0;
-//      mpc_uint32_t  FrameBitCnt = 0;
-//
-//      if (d->decoded_frames >= d->OverallFrames) {
-//              return (mpc_uint32_t)(-1);                           // end of file -> abort decoding
-//      }
-//
-//     // add seeking info
-//      if (d->seeking_table_frames < d->decoded_frames &&
-//                 (d->decoded_frames & ((1 << d->seeking_pwr) - 1)) == 0) {
-//              d->seeking_table[d->decoded_frames >> d->seeking_pwr] = mpc_decoder_bits_read(d);
-//              d->seeking_table_frames = d->decoded_frames;
-//                 }
-//
-//                 switch (d->StreamVersion) {
-//                         case 0x07:
-//                         case 0x17:
-//              // read jump-info for validity check of frame
-//                                 FwdJumpInfo  = mpc_decoder_bitstream_read(d, 20);
-//      // decode data and check for validity of frame
-//                                 FrameBitCnt = mpc_decoder_bits_read(d);
-//
-//                                 d->FrameWasValid = mpc_decoder_bits_read(d) - FrameBitCnt == FwdJumpInfo;
-//                                 break;
-//                         case 0x08:
-//                                 if (d->BlockBits < 8){
-//                                         mpc_block block;
-//                      // trouver le block
-//                                         mpc_decoder_bitstream_read(d, d->BlockBits);
-//                                         while (1) {
-//                                                 mpc_decoder_get_block(d, &block);
-//                                                 if (memcmp(block.key, "AD", 2) != 0)
-//                                                         mpc_decoder_seek(d, mpc_decoder_bits_read(d) + block.size * 8);
-//                                                 else
-//                                                         break;
-//                                         }
-//                                         d->BlockBits = block.size * 8;
-//                                 }
-//                                 FrameBitCnt = mpc_decoder_bits_read(d);
-//                                 mpc_decoder_read_bitstream_sv7(d, FALSE);
-//                                 d->BlockBits -= mpc_decoder_bits_read(d) - FrameBitCnt;
-//                                 d->FrameWasValid = 1;
-//                                 break;
-//                         default:
-//                                 return (mpc_uint32_t)(-1);
-//                 }
-//
-//                 return output_frame_length;
-// }
-//
-// mpc_uint32_t mpc_decoder_decode(
-//              mpc_decoder *d,
-//     MPC_SAMPLE_FORMAT *buffer,
-//      mpc_uint32_t *vbr_update_acc,
-//      mpc_uint32_t *vbr_update_bits)
-// {
-//      for(;;)
-//      {
-//         //const mpc_int32_t MaxBrokenFrames = 0; // PluginSettings.MaxBrokenFrames
-//
-//              mpc_uint32_t RING = d->Zaehler;
-//              mpc_int32_t vbr_ring = (RING << 5) + d->pos;
-//
-//              mpc_uint32_t valid_samples = mpc_decoder_decode_internal(d, buffer);
-//
-//              if (valid_samples == (mpc_uint32_t)(-1) ) {
-//                      return 0;
-//              }
-//
-//              /**************** ERROR CONCEALMENT *****************/
-//              if (d->FrameWasValid == 0 ) {
-//             // error occurred in bitstream
-//                      return (mpc_uint32_t)(-1);
-//              }
-//              else {
-//                      if (vbr_update_acc && vbr_update_bits) {
-//                              (*vbr_update_acc) ++;
-//                              vbr_ring = (d->Zaehler << 5) + d->pos - vbr_ring;
-//                              if (vbr_ring < 0) {
-//                                      vbr_ring += 524288;
-//                              }
-//                              (*vbr_update_bits) += vbr_ring;
-//                      }
-//
-//              }
-//              mpc_decoder_update_buffer(d, RING);
-//
-//              if (valid_samples > 0) {
-//                      return valid_samples;
-//              }
-//      }
-// }
-