diff options
Diffstat (limited to 'converter/ppm/ppmtompeg/bframe.c')
| -rw-r--r-- | converter/ppm/ppmtompeg/bframe.c | 128 |
1 files changed, 65 insertions, 63 deletions
diff --git a/converter/ppm/ppmtompeg/bframe.c b/converter/ppm/ppmtompeg/bframe.c index f5009d6c..8bce3e14 100644 --- a/converter/ppm/ppmtompeg/bframe.c +++ b/converter/ppm/ppmtompeg/bframe.c @@ -94,7 +94,7 @@ extern Block **dct, **dctr, **dctb; static void zeroMotion(motion * const motionP) { - + motionP->fwd.y = motionP->fwd.x = motionP->bwd.y = motionP->bwd.x = 0; } @@ -114,7 +114,6 @@ halfMotion(motion const motion) { - /*===========================================================================* * * compute the block resulting from motion compensation @@ -218,14 +217,14 @@ ComputeBDiffDCTs(MpegFrame * const current, int * const patternP) { Block motionBlock; - + if (*patternP & 0x20) { boolean significantDiff; ComputeBMotionBlock(prev, next, by, bx, mode, motion, &motionBlock, LUM_BLOCK); ComputeDiffDCTBlock(current->y_blocks[by][bx], dct[by][bx], motionBlock, &significantDiff); - if (!significantDiff) + if (!significantDiff) *patternP ^= 0x20; } @@ -235,7 +234,7 @@ ComputeBDiffDCTs(MpegFrame * const current, &motionBlock, LUM_BLOCK); ComputeDiffDCTBlock(current->y_blocks[by][bx+1], dct[by][bx+1], motionBlock, &significantDiff); - if (!significantDiff) + if (!significantDiff) *patternP ^= 0x10; } @@ -348,7 +347,7 @@ ComputeBlockColorDiff(Block current, unsigned int y; int diffTotal; - + diffTotal = 0; for (y = 0; y < 8; ++y) { @@ -433,13 +432,12 @@ MotionSufficient(MpegFrame * const curr, &mColorBlock, CB_BLOCK); colorErr += ComputeBlockColorDiff(curr->cr_blocks[by/2][bx/2], mColorBlock); - + return (colorErr < 256); /* lumErr checked above */ } - struct stats { int IBlocks; int BBlocks; @@ -464,7 +462,7 @@ initializeStats(struct stats * const statsP) { static void -checkSpecifics(MpegFrame * const curr, +checkSpecifics(MpegFrame * const curr, int const mbAddress, int const QScale, boolean * const skipItP, @@ -519,9 +517,9 @@ checkSpecifics(MpegFrame * const curr, static void makeNonSkipBlock(int const y, - int const x, - MpegFrame * const curr, - MpegFrame * const prev, + int const x, + MpegFrame * const curr, + MpegFrame * const prev, MpegFrame * const next, bool const specificsOn, int const mbAddress, @@ -556,7 +554,7 @@ makeNonSkipBlock(int const y, &motion, mode); } /* STEP 2: INTRA OR NON-INTRA CODING */ - if (IntraPBAllowed && + if (IntraPBAllowed && DoBIntraCode(curr, prev, next, y, x, mode, motion)) { /* output I-block inside a B-frame */ ++statsP->IBlocks; @@ -565,7 +563,7 @@ makeNonSkipBlock(int const y, dct_data[y][x].useMotion = NO_MOTION; *oldModeP = MOTION_FORWARD; /* calculate forward dct's */ - if (collect_quant && (collect_quant_detailed & 1)) + if (collect_quant && (collect_quant_detailed & 1)) fprintf(collect_quant_fp, "l\n"); mp_fwd_dct_block2(curr->y_blocks[y][x], dct[y][x]); mp_fwd_dct_block2(curr->y_blocks[y][x+1], dct[y][x+1]); @@ -574,9 +572,9 @@ makeNonSkipBlock(int const y, if (collect_quant && (collect_quant_detailed & 1)) { fprintf(collect_quant_fp, "c\n"); } - mp_fwd_dct_block2(curr->cb_blocks[y>>1][x>>1], + mp_fwd_dct_block2(curr->cb_blocks[y>>1][x>>1], dctb[y>>1][x>>1]); - mp_fwd_dct_block2(curr->cr_blocks[y>>1][x>>1], + mp_fwd_dct_block2(curr->cr_blocks[y>>1][x>>1], dctr[y>>1][x>>1]); } else { /* dct P/Bi/B block */ @@ -608,9 +606,9 @@ makeNonSkipBlock(int const y, default: pm_error("INTERNAL ERROR: Illegal mode: %d", mode); } - + ComputeBDiffDCTs(curr, prev, next, y, x, mode, motion, &pattern); - + dct_data[y][x].pattern = pattern; dct_data[y][x].useMotion = MOTION; if ( computeMVHist ) { @@ -622,7 +620,7 @@ makeNonSkipBlock(int const y, assert(motion.bwd.y + searchRangeB + 1 >= 0); assert(motion.bwd.x + searchRangeB + 1 <= 2*searchRangeB + 2); assert(motion.bwd.y + searchRangeB + 1 <= 2*searchRangeB + 2); - + ++bfmvHistogram[motion.fwd.x + searchRangeB + 1] [motion.fwd.y + searchRangeB + 1]; ++bbmvHistogram[motion.bwd.x + searchRangeB + 1] @@ -649,9 +647,9 @@ makeNonSkipBlock(int const y, * *===========================================================================*/ void -GenBFrame(BitBucket * const bb, - MpegFrame * const curr, - MpegFrame * const prev, +GenBFrame(BitBucket * const bb, + MpegFrame * const curr, + MpegFrame * const prev, MpegFrame * const next) { FlatBlock fba[6], fb[6]; @@ -704,7 +702,7 @@ GenBFrame(BitBucket * const bb, if (bitstreamMode == FIXED_RATE) { targetRateControl(curr); } - + QScale = GetBQScale(); Mhead_GenPictureHeader(bb, B_FRAME, curr->id, fCodeB); /* Check for Qscale change */ @@ -751,7 +749,7 @@ GenBFrame(BitBucket * const bb, mbAddress = 0; /* Start with zero motion assumption */ - zeroMotion(&motion); + zeroMotion(&motion); zeroMotion(&oldMotion); zeroMotion(&motionRem); zeroMotion(&motionQuot); @@ -759,7 +757,7 @@ GenBFrame(BitBucket * const bb, /* find motion vectors and do dcts */ /* In this first loop, all MVs are in half-pixel scope, (if FULL is set then they will be multiples of 2). This is not true in - the second loop. + the second loop. */ for (y = 0; y < lastBlockY; y += 2) { for (x = 0; x < lastBlockX; x += 2) { @@ -772,14 +770,14 @@ GenBFrame(BitBucket * const bb, currentBlock.l[iy][ix] = (int16)curr->orig_y[fy+iy][fx+ix]; } } - + if (slicePos == 0) { zeroMotion(&oldMotion); oldMode = MOTION_FORWARD; lastIntra = TRUE; } - /* STEP 1: Select Forward, Backward, or Interpolated motion + /* STEP 1: Select Forward, Backward, or Interpolated motion vectors */ /* see if old motion is good enough */ /* but force last block to be non-skipped */ @@ -795,7 +793,7 @@ GenBFrame(BitBucket * const bb, (! lastIntra) && (BSkipBlocks) ) { make_skip_block = - MotionSufficient(curr, ¤tBlock, + MotionSufficient(curr, ¤tBlock, prev, next, y, x, oldMode, oldMotion); } else make_skip_block = FALSE; @@ -830,7 +828,7 @@ GenBFrame(BitBucket * const bb, if ( (slicePos == 0) && (mbAddress != 0) ) { if (specificsOn) { /* Make sure no slice Qscale change */ - newQScale = + newQScale = SpecLookup(curr->id,1,mbAddress/blocksPerSlice, &info, QScale); if (newQScale != -1) QScale = newQScale; } @@ -858,7 +856,7 @@ GenBFrame(BitBucket * const bb, QScale = newQScale; } } - + if (specificsOn) { newQScale = SpecLookup(curr->id, 2, mbAddress, &info, QScale); if (newQScale != -1) { @@ -871,12 +869,12 @@ GenBFrame(BitBucket * const bb, mbAddrInc = 1; stats.IBits += (bb->cumulativeBits - stats.totalBits); stats.totalBits = bb->cumulativeBits; - + /* reset because intra-coded */ zeroMotion(&oldMotion); oldMode = MOTION_FORWARD; lastIntra = TRUE; - + if ( printSNR ) { /* need to decode block we just encoded */ /* and reverse the DCT transform */ @@ -896,14 +894,14 @@ GenBFrame(BitBucket * const bb, } else if (dct_data[y][x].useMotion == SKIP) { ++stats.Skipped; mbAddrInc++; - + /* decode skipped block */ if (printSNR) { struct motion motion; - + for (idx = 0; idx < 6; ++idx) - memset((char *)dec[idx], 0, sizeof(Block)); - + memset((char *)dec[idx], 0, sizeof(Block)); + if (pixelFullSearch) { motion.fwd.y = 2 * oldMotion.fwd.y; motion.fwd.x = 2 * oldMotion.fwd.x; @@ -911,7 +909,7 @@ GenBFrame(BitBucket * const bb, motion.bwd.x = 2 * oldMotion.bwd.x; } else motion = oldMotion; - + /* now add the motion block */ AddBMotionBlock(dec[0], prev->decoded_y, next->decoded_y, y, x, mode, motion); @@ -927,7 +925,7 @@ GenBFrame(BitBucket * const bb, AddBMotionBlock(dec[5], prev->decoded_cr, next->decoded_cr, y/2, x/2, mode, halfMotion(motion)); - + /* now, unblockify */ BlockToData(curr->decoded_y, dec[0], y, x); BlockToData(curr->decoded_y, dec[1], y, x+1); @@ -937,9 +935,9 @@ GenBFrame(BitBucket * const bb, BlockToData(curr->decoded_cr, dec[5], y/2, x/2); } } else /* B block */ { - int const fCode = fCodeB; + int const fCode = fCodeB; int pattern; - + pattern = dct_data[y][x].pattern; motion.fwd.y = dct_data[y][x].fmotionY; motion.fwd.x = dct_data[y][x].fmotionX; @@ -948,7 +946,7 @@ GenBFrame(BitBucket * const bb, if (pixelFullSearch) motion = halfMotion(motion); - + /* create flat blocks and update pattern if necessary */ calc_blocks: /* Note DoQuant references QScale, overflowChange, overflowValue, @@ -962,7 +960,7 @@ GenBFrame(BitBucket * const bb, motionForward = (dct_data[y][x].mode != MOTION_BACKWARD); motionBackward = (dct_data[y][x].mode != MOTION_FORWARD); - + /* Encode Vectors */ if (motionForward) { /* transform the fMotion vector into the appropriate values */ @@ -974,7 +972,7 @@ GenBFrame(BitBucket * const bb, FORW_F, fCode); oldMotion.fwd = motion.fwd; } - + if (motionBackward) { /* transform the bMotion vector into the appropriate values */ offsetY = motion.bwd.y - oldMotion.bwd.y; @@ -984,9 +982,9 @@ GenBFrame(BitBucket * const bb, BACK_F, fCode); oldMotion.bwd = motion.bwd; } - + oldMode = dct_data[y][x].mode; - + if (printSNR) { /* Need to decode */ if (pixelFullSearch) { motion.fwd.x *= 2; motion.fwd.y *= 2; @@ -1030,7 +1028,7 @@ GenBFrame(BitBucket * const bb, y_dc_pred = cr_dc_pred = cb_dc_pred = 128; lastIntra = FALSE; mode = dct_data[y][x].mode; - + /* DBG_PRINT(("MB Header(%d,%d)\n", x, y)); */ Mhead_GenMBHeader( bb, 3 /* pict_code_type */, mbAddrInc /* addr_incr */, @@ -1049,7 +1047,7 @@ GenBFrame(BitBucket * const bb, pattern /* mb_pattern */, FALSE /* mb_intra */); mbAddrInc = 1; - + /* now output the difference */ { unsigned int x; @@ -1058,7 +1056,7 @@ GenBFrame(BitBucket * const bb, Mpost_RLEHuffPBlock(fba[x], bb); } } - + switch (mode) { case MOTION_FORWARD: bframeStats.BFOBits += (bb->cumulativeBits - stats.totalBits); @@ -1072,10 +1070,10 @@ GenBFrame(BitBucket * const bb, default: pm_error("PROGRAMMER ERROR: Illegal mode: %d", mode); } - + stats.BBits += (bb->cumulativeBits - stats.totalBits); stats.totalBits = bb->cumulativeBits; - + if (overflowChange) { /* undo an overflow-caused Qscale change */ overflowChange = FALSE; @@ -1091,7 +1089,7 @@ GenBFrame(BitBucket * const bb, rc_blockStart = bb->cumulativeBits; MB_RateOut(TYPE_BFRAME); } - + } } @@ -1100,22 +1098,22 @@ GenBFrame(BitBucket * const bb, totalSNR += snr[0]; totalPSNR += psnr[0]; } - + Mhead_GenSliceEnder(bb); /* Rate Control */ if (bitstreamMode == FIXED_RATE) { updateRateControl(TYPE_BFRAME); } - + endTime = time_elapsed(); totalTime += (endTime-startTime); - + if ( showBitRatePerFrame ) { /* ASSUMES 30 FRAMES PER SECOND */ fprintf(bitRateFile, "%5d\t%8d\n", curr->id, 30*(bb->cumulativeBits-totalFrameBits)); } - + if ( frameSummary && !realQuiet) { fprintf(stdout, "FRAME %d (B): " "I BLOCKS: %5d; B BLOCKS: %5d SKIPPED: %5d (%ld seconds)\n", @@ -1127,7 +1125,7 @@ GenBFrame(BitBucket * const bb, curr->id, snr[0], snr[1], snr[2], psnr[0], psnr[1], psnr[2]); } - + bframeStats.FrameBits += (bb->cumulativeBits-totalFrameBits); bframeStats.BIBlocks += stats.IBlocks; bframeStats.BBBlocks += stats.BBlocks; @@ -1156,6 +1154,7 @@ SetBQScale(qB) } + /*===========================================================================* * * GetBQScale @@ -1174,6 +1173,7 @@ GetBQScale() } + /*===========================================================================* * * ResetBFrameStats @@ -1208,8 +1208,8 @@ BFrameTotalTime(void) { void -ShowBFrameSummary(unsigned int const inputFrameBits, - unsigned int const totalBits, +ShowBFrameSummary(unsigned int const inputFrameBits, + unsigned int const totalBits, FILE * const fpointer) { if (bframeStats.Frames > 0) { @@ -1234,13 +1234,13 @@ ShowBFrameSummary(unsigned int const inputFrameBits, " B types: %5d (%4d bpb) " "forw %5d (%4d bpb) back %5d (%4d bpb) bi\n", bframeStats.BFOBlocks, - (bframeStats.BFOBlocks==0) ? + (bframeStats.BFOBlocks==0) ? 0 : bframeStats.BFOBits/bframeStats.BFOBlocks, bframeStats.BBABlocks, - (bframeStats.BBABlocks==0) ? + (bframeStats.BBABlocks==0) ? 0 : bframeStats.BBABits/bframeStats.BBABlocks, bframeStats.BINBlocks, - (bframeStats.BINBlocks==0) ? + (bframeStats.BINBlocks==0) ? 0 : bframeStats.BINBits/bframeStats.BINBlocks); } else fprintf(fpointer, " B Blocks: %5d\n", 0); @@ -1251,7 +1251,7 @@ ShowBFrameSummary(unsigned int const inputFrameBits, "(%5d bpf) (%2.1f%% of total)\n", bframeStats.Frames, bframeStats.FrameBits, bframeStats.FrameBits/bframeStats.Frames, - 100.0*(float)bframeStats.FrameBits/(float)totalBits); + 100.0*(float)bframeStats.FrameBits/(float)totalBits); fprintf(fpointer, " Compression: %3d:1 (%9.4f bpp)\n", bframeStats.Frames*inputFrameBits/bframeStats.FrameBits, 24.0*(float)bframeStats.FrameBits/ @@ -1312,7 +1312,7 @@ ComputeBMotionLumBlock(MpegFrame * const prev, ComputeMotionLumBlock(prev, by, bx, motion.fwd, &prevBlock); ComputeMotionLumBlock(next, by, bx, motion.bwd, &nextBlock); - + for (y = 0; y < 16; ++y) { unsigned int x; for (x = 0; x < 16; ++x) @@ -1326,6 +1326,7 @@ ComputeBMotionLumBlock(MpegFrame * const prev, } + /*===========================================================================* * * estimate the seconds to compute a B-frame @@ -1344,3 +1345,4 @@ EstimateSecondsPerBFrame() { } + |