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@@ -26,7 +26,6 @@ |
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#include "rawdec.h" |
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#include "id3v1.h" |
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static int adts_aac_probe(AVProbeData *p) |
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{ |
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int max_frames = 0, first_frames = 0; |
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@@ -38,27 +37,33 @@ static int adts_aac_probe(AVProbeData *p) |
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buf = buf0; |
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for(; buf < end; buf= buf2+1) { |
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for (; buf < end; buf = buf2 + 1) { |
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buf2 = buf; |
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for(frames = 0; buf2 < end; frames++) { |
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for (frames = 0; buf2 < end; frames++) { |
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uint32_t header = AV_RB16(buf2); |
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if((header&0xFFF6) != 0xFFF0) |
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if ((header & 0xFFF6) != 0xFFF0) |
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break; |
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fsize = (AV_RB32(buf2 + 3) >> 13) & 0x1FFF; |
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if(fsize < 7) |
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if (fsize < 7) |
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break; |
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buf2 += fsize; |
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} |
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max_frames = FFMAX(max_frames, frames); |
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if(buf == buf0) |
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first_frames= frames; |
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if (buf == buf0) |
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first_frames = frames; |
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} |
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if (first_frames>=3) return AVPROBE_SCORE_EXTENSION + 1; |
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else if(max_frames>500)return AVPROBE_SCORE_EXTENSION; |
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else if(max_frames>=3) return AVPROBE_SCORE_EXTENSION / 2; |
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else if(max_frames>=1) return 1; |
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else return 0; |
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if (first_frames >= 3) |
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return AVPROBE_SCORE_EXTENSION + 1; |
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else if (max_frames > 500) |
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return AVPROBE_SCORE_EXTENSION; |
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else if (max_frames >= 3) |
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return AVPROBE_SCORE_EXTENSION / 2; |
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else if (max_frames >= 1) |
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return 1; |
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else |
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return 0; |
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} |
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static int adts_aac_read_header(AVFormatContext *s) |
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@@ -70,24 +75,24 @@ static int adts_aac_read_header(AVFormatContext *s) |
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return AVERROR(ENOMEM); |
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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st->codec->codec_id = s->iformat->raw_codec_id; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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st->codec->codec_id = s->iformat->raw_codec_id; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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ff_id3v1_read(s); |
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//LCM of all possible ADTS sample rates |
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// LCM of all possible ADTS sample rates |
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avpriv_set_pts_info(st, 64, 1, 28224000); |
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return 0; |
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} |
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AVInputFormat ff_aac_demuxer = { |
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.name = "aac", |
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.long_name = NULL_IF_CONFIG_SMALL("raw ADTS AAC (Advanced Audio Coding)"), |
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.read_probe = adts_aac_probe, |
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.read_header = adts_aac_read_header, |
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.read_packet = ff_raw_read_partial_packet, |
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.flags = AVFMT_GENERIC_INDEX, |
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.extensions = "aac", |
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.raw_codec_id = AV_CODEC_ID_AAC, |
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.name = "aac", |
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.long_name = NULL_IF_CONFIG_SMALL("raw ADTS AAC (Advanced Audio Coding)"), |
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.read_probe = adts_aac_probe, |
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.read_header = adts_aac_read_header, |
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.read_packet = ff_raw_read_partial_packet, |
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.flags = AVFMT_GENERIC_INDEX, |
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.extensions = "aac", |
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.raw_codec_id = AV_CODEC_ID_AAC, |
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}; |