encode2mpeglight

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· 代码 · 共 1,545 行 · 第 1/5 页

status_bit () {
    local a
    case $1 in
        avi) bit=0 ;;
        mpv) bit=1 ;;
        mpa) bit=2 ;;
        mpg) bit=3 ;;
        img) bit=4 ;;
        sub) bit=5 ;;
        ach) bit=6 ;;
        fno) bit=7 ;;
        ch0) bit=8 ;;
        sbm) bit=9 ;;
        spl) bit=10 ;;
    esac
    if [[ $2 = set ]]; then
        skip=$((skip|1<<bit))
    else
        return $(((skip&1<<bit) && 1))
    fi
}
###############################################################################
file_size () { #fsize,fint,ffrac,fpre
    local -a PRE=([1]=K M G T)
    local i=0
    fsize=$(ls -l "$1" | awk '{print $5}')
    fint=$fsize
    ffrac=0
    while ((fint>=1024)) ; do
        ((fint/1024 < 1024)) && ffrac=$((( fint+=51 )%1024))
        i=$((++i))
        fint=$((fint/1024))
    done
    ffrac=$((ffrac*10/1024))
    fpre=${PRE[i]}
}
###############################################################################
show_file_info () {
    file_size "$2"
    echo "   $1: $2 is $fsize bytes, $fint.$ffrac ${fpre}B" >>"$output".log
}
###############################################################################
show_finalvideo_info () {
    local codec TYPE i VIDEO OUT ASPECT CH FAAC SUBST
    SUBST=
    VIDEO="$(mplayer -nocache -frames 0 -vo null -nosound "$2" 2>/dev/null | grep "^VIDEO:")"
    if [[ ! $VIDEO ]]; then
        # MPEGs with MPEG-4 video do not show all the video informations in one line,
        # assebmling the informations (kbps is missing):
        OUT="$(mplayer -nocache -frames 1 -vo null -nosound -v "$2" 2>/dev/null)"
        if echo "$OUT" | grep -q '^\[V].*fourcc:0x10000004' ; then
            VIDEO="VIDEO:  MPEG-4  $(echo "$OUT" | awk '$1=="VO:"&&$2=="[null]"{print $3}')"
            ASPECT=$(echo "$OUT" | awk '$1=="Movie-Aspect"{print $3}')
            case $ASPECT in
                undefined) VIDEO="$VIDEO  (aspect 1)" ;;
                1.33:1) VIDEO="$VIDEO  (aspect 2)" ;;
                1.78:1) VIDEO="$VIDEO  (aspect 3)" ;;
                2.21:1) VIDEO="$VIDEO  (aspect 4)" ;;
                *) VIDEO="$VIDEO  (aspect $ASPECT)" ;;
            esac
            VIDEO="$VIDEO  $(echo "$OUT" | awk '$1=="[V]"{print $5}')"
        fi
    fi
    echo "   $1: $VIDEO" >>"$output".log
    #### removed -vc dummy
    for i in $(mplayer -vo null -ao null -nocache -frames 1 -v "$2" 2>/dev/null | awk '/==> Found audio str/{print $NF}' | sort -n) ; do
        echo -n "   $1: AUDIO[$i]: " >>"$output".log
        codec=$(mplayer -ac mp3, -nocache -frames 0 -v -ao null -vo null "$2" -aid $i 2>/dev/null | \
          sed '/Selected audio codec:/!d;s/[^(]*(//;s/).*//;s/AAC.*/& AAC/;s/.* //')
        #### AAC info are insufficient/incorrect
        if [[ $codec = AAC ]]; then
            CH=$(mplayer -nocache -frames 0 -v -ao null -vo null "$2" -aid $i 2>/dev/null | awk '/FAAD: Negotiated samplerate:/{print $NF}')
            if type &>/dev/null faad ; then
                mplayer -dumpaudio -dumpfile "$output".audio -aid $i "$2" 2>/dev/null
                FAAC=$(faad -i "$output".audio 2>&1 | tail -2 | head -n 1)
                #ADTS, 4.087 sec, 103 kbps, 44100 Hz
                rm -f "$output".audio
                SUBST="s/AAC.*/AAC:$(echo "$FAAC" | sed 's/.*,\([^,]*Hz\).*/\1/'), "
                SUBST="${SUBST}$CH ch, $(echo "$FAAC" | sed 's/,.*//'),"
                SUBST="${SUBST}$(echo "$FAAC" | sed 's/.*,\([^,]*kbps\).*/\1/')"
                SUBST="${SUBST}/;"
            else
                SUBST="s/2 ch,/$CH ch,/;"
            fi
        fi
        mplayer -ac mp3, -nocache -frames 0 -v -ao null -vo null "$2" -aid $i 2>/dev/null | sed '/^Opening audio decode/,/^AUDIO:/!d;s/\r//g' | \
          grep -e '^AC3:' -e '^MPEG' -e '^AUDIO:' | sed 's/AUDIO/'"$codec"'/;'"$SUBST"'q' >>"$output".log
    done
    TYPE=$1
    shift
    for i ; do
        show_file_info "$TYPE" "$i"
    done
}
###############################################################################
video_duration () {
    mencoder "$@" -ovc copy -nosound -o /dev/null -quiet 2>&1 | awk '/^Video stream:/{print $10+$10/$12}'
}
###############################################################################
job_exit () {
    EXIT=$?
        status_bit mpg || [[ ! -f ${output}.mpg && ! -f ${output}01.mpg ]] || show_finalvideo_info  "MPEG" "${output}"*.mpg
        [[ $usesbr ]] && ((DEBUG && usesbr>6)) && awk -v u=$usesbr -v f=$fsize \
          'BEGIN{b=u*1024*1024;printf("--DEBUG: [usesbr] target: %dMB (%d bytes), error: %f%%\n",u,b,(b-f)*100/b)}' >>"$output".log
    sec=$(($(pr_time)-STARTTIME))
    echo " JOBEND: $output $(pr_date) ($((sec/3600))h$((sec/60%60))m$((sec%60))s)" >>"$output".log
    rm -f "${CLEAN[@]}" psnr_??????.log
    ((DEBUG)) && exec >&1- >&2- && exec >&3
    if [[ -f $output.yuvscaler.log || -f $output.mpeg2enc.log ]]; then
        echo
    else
        ((!EXIT)) && [[ ! $quiet ]] && cat "$output".log
    fi
    ((DEBUG)) && rm -f "$output".debug.fifo && kill $PROCTEE
}
###############################################################################
me_log () {
    rm -f "$output".fifo
    mkfifo "$output".fifo
    tee -a /dev/stderr <"$output".fifo | sed 's/.*\r//' | \
      awk '/^PSNR:|^M[EP][ln]|^There are |^\[open]|^audio stream:|^number of|^subtitle|^==> |^Recommended video bitrate/{sub(/^/,"   INFO: [mencoder] ");
        print}' >>"$output".log &
}
###############################################################################
me_bit_log () {
    rm -f "$output".fifo
    mkfifo "$output".fifo
    tee -a /dev/stderr <"$output".fifo | sed 's/.*\r//;/^Recommended video bitrate/!d;s/^/   INFO: [mencoder] /' >>"$output".log &
}
###############################################################################
check_abr () {
        # abr permitted:
        # ac3: ( 8000/11025/12000)  8 16 24 32 40 48 56 64 80 96 112 128 144 160
        # ac3: (16000/22050/24000)    16 24 32 40 48 56 64 80 96 112 128     160     192 224 256 288 320
        # ac3: (32000/44100/48000)          32 40 48 56 64 80 96 112 128     160     192 224 256     320     384     448 512 576 640
        # mp3: ( 8000/11025/12000)  8 16 24 32 40 48 56 64 80 96 112 128 144 160
        # mp3: (16000/22050/24000)  8 16 24 32 40 48 56 64 80 96 112 128 144 160
        # mp3: (32000/44100/48000)          32 40 48 56 64 80 96 112 128     160     192 224 256     320
        # mp2: ( 8000/11025/12000)
        # mp2: (16000/22050/24000)  8 16 24 32 40 48 56 64 80 96 112 128 144 160
        # mp2: (32000/44100/48000)          32    48 56 64 80 96 112 128     160     192 224 256     320     384
        # mp1: ( 8000/11025/12000)
        # mp1: (16000/22050/24000)          32    48 56 64 80 96 112 128 144 160 176 192 224 256
        # mp1: (32000/44100/48000)          32          64    96     128     160     192 224 256 288 320 352 384 416 448
    case $1 in
        ac3)
            case $2 in
                8000|11025|12000)
                    case $3 in
                        8|16|24|32|40|48|56|64|80|96|112|128|144|160) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                16000|22050|24000)
                    case $3 in
                        16|24|32|40|48|56|64|80|96|112|128|160|192|224|256|288|320) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                32000|44100|48000)
                    case $3 in
                        32|40|48|56|64|80|96|112|128|160|192|224|256|320|384|448|512|576|640) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                *) return 1 ;;
            esac
            ;;
        mp3)
            case $2 in
                8000|11025|12000|16000|22050|24000)
                    case $3 in
                        8|16|24|32|40|48|56|64|80|96|112|128|144|160) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                32000|44100|48000)
                    case $3 in
                        32|40|48|56|64|80|96|112|128|160|192|224|256|320) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                *) return 1 ;;
            esac
            ;;
        mp2)
            case $2 in
                16000|22050|24000)
                    case $3 in
                        8|16|24|32|40|48|56|64|80|96|112|128|144|160) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                32000|44100|48000)
                    case $3 in
                        32|48|56|64|80|96|112|128|160|192|224|256|320|384) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                *) return 1 ;;
            esac
            ;;
        mp1)
            case $2 in
                16000|22050|24000)
                    case $3 in
                        32|48|56|64|80|96|112|128|144|160|176|192|224|256) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                32000|44100|48000)
                    case $3 in
                        32|64|96|128|160|192|224|256|288|320|352|384|416|448) : ;;
                        *) return 1 ;;
                    esac
                    ;;
                *) return 1 ;;
            esac
            ;;
        *) return 1 ;;
    esac
}
###############################################################################
debug_line () {
    echo "--DEBUG: [$PROGNAME] $2($1) $(eval echo $(sed -n $1p "$PROGFILE" | sed 's/ |.*//;s/.>.*//;s/</\\\</'))" >>"$output".log
}
###############################################################################
error_line () {
    echo "--DEBUG: [$PROGNAME] $1"
    echo "**ERROR: [$PROGNAME] there has been an error during the execution of the previous line, this should not happen"
    echo "possible causes:"
    echo "  0) missing or misspelled input stream"
    echo "  1) the input stream is corrupted"
    echo "       -> try a different input stream"
    echo "  2) one of the options used has triggered a bug present only on your combination of architecture/compiler/distribution"
    echo "       -> try to recompile MPlayer with a different compiler version or try another distribution"
    if ((SVN)); then
        echo "  3) one of the options used is not valid or is buggy for your SVN/unsupported version of MPlayer/MEncoder"
        echo "       -> check MPlayer's man page and/or try a supported release of MPlayer"
    fi
    echo
    echo "submit a bugreport if you think this is a bug in $PROGNAME"
    exit $ret
}
###############################################################################
check_mencoder_abr () {
    local codec lib ASR
    codec=([4]=mp2 mp3 ac3 mp2 aac)
    lib=([4]=libavcodec libavcodec libavcodec lib${TOOLAME} libfaac)
    ASR=${encode%%:*}
    check_abr ${codec[ASR]} $1 $2 || ! echo "**ERROR: [$PROGNAME] ${lib[ASR]} does not support $2 kbps / $1 Hz for ${codec[ASR]}" || exit 1
}
###############################################################################
is_film2pal () {
    local a
    a=$(mplayer -nocache "$@" -vo null -nosound -benchmark -frames 60 -noquiet 2>/dev/null | tr '\015' '\012' | tail | \
      awk -F/ '$1~/^V:/{s=$1;t=$2}END{match(s,/ [0-9]+$/);n=substr(s,RSTART+1);match(t,/[0-9]+ /);m=substr(t,1,RLENGTH-1);r=n/m;if(r>1.02)print "24"}')
    [[ $a ]] && a=$(mplayer -nocache "$@" -vo null -nosound -benchmark -frames 1500 -noquiet 2>/dev/null | tr '\015' '\012' | tail | \
      awk -F/ '$1~/^V:/{s=$1;t=$2}END{match(s,/ [0-9]+$/);n=substr(s,RSTART+1);match(t,/[0-9]+ /);m=substr(t,1,RLENGTH-1);r=n/m;
      if(r>1.042)print "24000/1001fps";if(r<1.042&&r>1.041)print "24fps"}')
    echo "$a"
}

###############################################################################
#### ERROR if some options conflict is detected part 2/2
###############################################################################
#### libavcodec codec/asr/abr
#### libtoolame asr/abr
#### libmp3lame asr
#### no check is done on the other channel in case of multiaudio
if [[ $encode == [2-8]:?:? ]]; then
    if [[ $srate ]]; then
        r=$srate
    else
        r=$(id_find ID_AUDIO_RATE "${MPLAYERINFO[@]}")
        if [[ ! $r ]]; then
            do_log "++ WARN: [$PROGNAME] failure to detect the audio sample rate of the input stream"
            [[ ! $multiaudio && ! $audioid ]] && do_log "++ WARN: [$PROGNAME] if your source video does not have audio use -encode 0:${encode#*:}" || \
              do_log "++ WARN: [$PROGNAME] probably is incorrect the audio stream selected with -${audioid:+aid}${multiaudio:+multiaudio}"
        fi
        if [[ $mpeg && ! $usespeed ]]; then
            case $frameformat in
                *VCD) ((r != 44100)) && do_log "++ WARN: [$PROGNAME] $frameformat standard requires 44100kHz audio, add -srate 44100" ;;
                DVD)  ((r != 48000)) && do_log "++ WARN: [$PROGNAME] $frameformat standard requires 48000kHz audio, add -srate 48000" ;;
            esac
        fi
    fi
    if [[ $encode == [4-7]:?:? ]]; then
        check_mencoder_abr "$r" ${AUDIOPASS##*=}
    elif [[ $encode == 8:?:? ]]; then
        case $r in
            8000|11025|12000|16000|22050|24000|32000|44100|48000|64000|88200|96000) : ;;
            *) echo "**ERROR: [$PROGNAME] libfaac does not support $r Hz sample rate" ; exit 1 ;;
        esac
    else
        case $r in
            8000|11025|12000|16000|22050|24000|32000|44100|48000) : ;;
            *) echo "**ERROR: [$PROGNAME] libmp3lame does not support $r Hz sample rate" ; exit 1 ;;
        esac
    fi
fi
#### copy of non-MPEG audio in a VCD
if [[ $step -gt 1 && $frameformat = VCD && $encode == 0:?:? && ( $mpeg || ${!audioformat} = copy ) && ! $testmca && ! $pictsrc ]]; then
    a=$(id_find ID_AUDIO_CODEC "${MPLAYERINFO[@]}")
    [[ $a != mp3 ]] && echo "**ERROR: [$PROGNAME] you cannot copy $a audio in a $frameformat" && exit 1
fi
#### mpegchannels > 2 only with ac3 and aac
[[ $mpeg && ${mpegchannels:-2} -gt 2 && $encode == [2-57]:?:? ]] && CODEC=([2]=mp3 mp3 mp2 mp3 [7]=mp2) && \
  echo "**ERROR: [$PROG