mirror of https://github.com/FFmpeg/FFmpeg.git
libnut is unmaintained and known to be buggy; native NUT code exists.pull/30/merge
Diego Biurrun
13 years ago
parent
9309bdfe2c
commit
db9e00f469
4 changed files with 0 additions and 321 deletions
@ -1,311 +0,0 @@ |
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/*
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* NUT (de)muxing via libnut |
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* copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* NUT demuxing and muxing via libnut. |
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* @author Oded Shimon <ods15@ods15.dyndns.org> |
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*/ |
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#include "avformat.h" |
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#include "internal.h" |
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#include "riff.h" |
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#include <libnut.h> |
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#define ID_STRING "nut/multimedia container" |
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#define ID_LENGTH (strlen(ID_STRING) + 1) |
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typedef struct { |
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nut_context_tt * nut; |
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nut_stream_header_tt * s; |
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} NUTContext; |
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static const AVCodecTag nut_tags[] = { |
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{ CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') }, |
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{ CODEC_ID_MP3, MKTAG('m', 'p', '3', ' ') }, |
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{ CODEC_ID_VORBIS, MKTAG('v', 'r', 'b', 's') }, |
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{ 0, 0 }, |
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}; |
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#if CONFIG_LIBNUT_MUXER |
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static int av_write(void * h, size_t len, const uint8_t * buf) { |
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AVIOContext * bc = h; |
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avio_write(bc, buf, len); |
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//avio_flush(bc);
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return len; |
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} |
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static int nut_write_header(AVFormatContext * avf) { |
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NUTContext * priv = avf->priv_data; |
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AVIOContext * bc = avf->pb; |
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nut_muxer_opts_tt mopts = { |
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.output = { |
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.priv = bc, |
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.write = av_write, |
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}, |
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.alloc = { av_malloc, av_realloc, av_free }, |
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.write_index = 1, |
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.realtime_stream = 0, |
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.max_distance = 32768, |
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.fti = NULL, |
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}; |
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nut_stream_header_tt * s; |
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int i; |
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priv->s = s = av_mallocz((avf->nb_streams + 1) * sizeof*s); |
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for (i = 0; i < avf->nb_streams; i++) { |
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AVCodecContext * codec = avf->streams[i]->codec; |
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int j; |
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int fourcc = 0; |
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int num, denom, ssize; |
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s[i].type = codec->codec_type == AVMEDIA_TYPE_VIDEO ? NUT_VIDEO_CLASS : NUT_AUDIO_CLASS; |
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if (codec->codec_tag) fourcc = codec->codec_tag; |
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else fourcc = ff_codec_get_tag(nut_tags, codec->codec_id); |
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if (!fourcc) { |
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if (codec->codec_type == AVMEDIA_TYPE_VIDEO) fourcc = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id); |
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if (codec->codec_type == AVMEDIA_TYPE_AUDIO) fourcc = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id); |
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} |
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s[i].fourcc_len = 4; |
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s[i].fourcc = av_malloc(s[i].fourcc_len); |
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for (j = 0; j < s[i].fourcc_len; j++) s[i].fourcc[j] = (fourcc >> (j*8)) & 0xFF; |
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ff_parse_specific_params(codec, &num, &ssize, &denom); |
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avpriv_set_pts_info(avf->streams[i], 60, denom, num); |
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s[i].time_base.num = denom; |
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s[i].time_base.den = num; |
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s[i].fixed_fps = 0; |
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s[i].decode_delay = codec->has_b_frames; |
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s[i].codec_specific_len = codec->extradata_size; |
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s[i].codec_specific = codec->extradata; |
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if (codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
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s[i].width = codec->width; |
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s[i].height = codec->height; |
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s[i].sample_width = 0; |
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s[i].sample_height = 0; |
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s[i].colorspace_type = 0; |
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} else { |
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s[i].samplerate_num = codec->sample_rate; |
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s[i].samplerate_denom = 1; |
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s[i].channel_count = codec->channels; |
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} |
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} |
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s[avf->nb_streams].type = -1; |
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priv->nut = nut_muxer_init(&mopts, s, NULL); |
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return 0; |
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} |
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static int nut_write_packet(AVFormatContext * avf, AVPacket * pkt) { |
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NUTContext * priv = avf->priv_data; |
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nut_packet_tt p; |
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p.len = pkt->size; |
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p.stream = pkt->stream_index; |
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p.pts = pkt->pts; |
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p.flags = pkt->flags & AV_PKT_FLAG_KEY ? NUT_FLAG_KEY : 0; |
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p.next_pts = 0; |
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nut_write_frame_reorder(priv->nut, &p, pkt->data); |
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return 0; |
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} |
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static int nut_write_trailer(AVFormatContext * avf) { |
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AVIOContext * bc = avf->pb; |
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NUTContext * priv = avf->priv_data; |
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int i; |
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nut_muxer_uninit_reorder(priv->nut); |
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avio_flush(bc); |
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for(i = 0; priv->s[i].type != -1; i++ ) av_freep(&priv->s[i].fourcc); |
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av_freep(&priv->s); |
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return 0; |
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} |
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AVOutputFormat ff_libnut_muxer = { |
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.name = "libnut", |
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.long_name = "nut format", |
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.mime_type = "video/x-nut", |
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.extensions = "nut", |
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.priv_data_size = sizeof(NUTContext), |
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.audio_codec = CODEC_ID_VORBIS, |
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.video_codec = CODEC_ID_MPEG4, |
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.write_header = nut_write_header, |
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.write_packet = nut_write_packet, |
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.write_trailer = nut_write_trailer, |
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.flags = AVFMT_GLOBALHEADER, |
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}; |
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#endif /* CONFIG_LIBNUT_MUXER */ |
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static int nut_probe(AVProbeData *p) { |
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if (!memcmp(p->buf, ID_STRING, ID_LENGTH)) return AVPROBE_SCORE_MAX; |
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return 0; |
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} |
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static size_t av_read(void * h, size_t len, uint8_t * buf) { |
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AVIOContext * bc = h; |
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return avio_read(bc, buf, len); |
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} |
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static off_t av_seek(void * h, long long pos, int whence) { |
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AVIOContext * bc = h; |
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if (whence == SEEK_END) { |
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pos = avio_size(bc) + pos; |
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whence = SEEK_SET; |
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} |
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return avio_seek(bc, pos, whence); |
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} |
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static int nut_read_header(AVFormatContext * avf) { |
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NUTContext * priv = avf->priv_data; |
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AVIOContext * bc = avf->pb; |
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nut_demuxer_opts_tt dopts = { |
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.input = { |
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.priv = bc, |
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.seek = av_seek, |
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.read = av_read, |
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.eof = NULL, |
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.file_pos = 0, |
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}, |
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.alloc = { av_malloc, av_realloc, av_free }, |
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.read_index = 1, |
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.cache_syncpoints = 1, |
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}; |
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nut_context_tt * nut = priv->nut = nut_demuxer_init(&dopts); |
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nut_stream_header_tt * s; |
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int ret, i; |
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if ((ret = nut_read_headers(nut, &s, NULL))) { |
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av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret)); |
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nut_demuxer_uninit(nut); |
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return -1; |
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} |
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priv->s = s; |
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for (i = 0; s[i].type != -1 && i < 2; i++) { |
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AVStream * st = avformat_new_stream(avf, NULL); |
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int j; |
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for (j = 0; j < s[i].fourcc_len && j < 8; j++) st->codec->codec_tag |= s[i].fourcc[j]<<(j*8); |
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st->codec->has_b_frames = s[i].decode_delay; |
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st->codec->extradata_size = s[i].codec_specific_len; |
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if (st->codec->extradata_size) { |
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st->codec->extradata = av_mallocz(st->codec->extradata_size); |
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memcpy(st->codec->extradata, s[i].codec_specific, st->codec->extradata_size); |
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} |
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avpriv_set_pts_info(avf->streams[i], 60, s[i].time_base.num, s[i].time_base.den); |
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st->start_time = 0; |
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st->duration = s[i].max_pts; |
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st->codec->codec_id = ff_codec_get_id(nut_tags, st->codec->codec_tag); |
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switch(s[i].type) { |
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case NUT_AUDIO_CLASS: |
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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if (st->codec->codec_id == CODEC_ID_NONE) st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, st->codec->codec_tag); |
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st->codec->channels = s[i].channel_count; |
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st->codec->sample_rate = s[i].samplerate_num / s[i].samplerate_denom; |
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break; |
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case NUT_VIDEO_CLASS: |
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st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
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if (st->codec->codec_id == CODEC_ID_NONE) st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, st->codec->codec_tag); |
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st->codec->width = s[i].width; |
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st->codec->height = s[i].height; |
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st->sample_aspect_ratio.num = s[i].sample_width; |
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st->sample_aspect_ratio.den = s[i].sample_height; |
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break; |
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} |
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if (st->codec->codec_id == CODEC_ID_NONE) av_log(avf, AV_LOG_ERROR, "Unknown codec?!\n"); |
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} |
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return 0; |
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} |
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static int nut_read_packet(AVFormatContext * avf, AVPacket * pkt) { |
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NUTContext * priv = avf->priv_data; |
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nut_packet_tt pd; |
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int ret; |
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ret = nut_read_next_packet(priv->nut, &pd); |
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if (ret || av_new_packet(pkt, pd.len) < 0) { |
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if (ret != NUT_ERR_EOF) |
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av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret)); |
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return -1; |
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} |
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if (pd.flags & NUT_FLAG_KEY) pkt->flags |= AV_PKT_FLAG_KEY; |
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pkt->pts = pd.pts; |
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pkt->stream_index = pd.stream; |
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pkt->pos = avio_tell(avf->pb); |
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ret = nut_read_frame(priv->nut, &pd.len, pkt->data); |
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return ret; |
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} |
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static int nut_read_seek(AVFormatContext * avf, int stream_index, int64_t target_ts, int flags) { |
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NUTContext * priv = avf->priv_data; |
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int active_streams[] = { stream_index, -1 }; |
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double time_pos = target_ts * priv->s[stream_index].time_base.num / (double)priv->s[stream_index].time_base.den; |
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if (nut_seek(priv->nut, time_pos, 2*!(flags & AVSEEK_FLAG_BACKWARD), active_streams)) return -1; |
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return 0; |
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} |
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static int nut_read_close(AVFormatContext *s) { |
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NUTContext * priv = s->priv_data; |
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nut_demuxer_uninit(priv->nut); |
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return 0; |
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} |
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AVInputFormat ff_libnut_demuxer = { |
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.name = "libnut", |
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.long_name = NULL_IF_CONFIG_SMALL("NUT format"), |
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.priv_data_size = sizeof(NUTContext), |
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.read_probe = nut_probe, |
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.read_header = nut_read_header, |
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.read_packet = nut_read_packet, |
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.read_close = nut_read_close, |
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.read_seek = nut_read_seek, |
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.extensions = "nut", |
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}; |
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