[deb_ffmpeg.git] / ffmpeg / libavformat / libnut.c

/*
 * NUT (de)muxing via libnut
 * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * NUT demuxing and muxing via libnut.
 * @author Oded Shimon <ods15@ods15.dyndns.org>
 */

#include "avformat.h"
#include "internal.h"
#include "riff.h"
#include <libnut.h>

#define ID_STRING "nut/multimedia container"
#define ID_LENGTH (strlen(ID_STRING) + 1)

typedef struct {
    nut_context_tt * nut;
    nut_stream_header_tt * s;
} NUTContext;

static const AVCodecTag nut_tags[] = {
    { AV_CODEC_ID_MPEG4,  MKTAG('m', 'p', '4', 'v') },
    { AV_CODEC_ID_MP3,    MKTAG('m', 'p', '3', ' ') },
    { AV_CODEC_ID_VORBIS, MKTAG('v', 'r', 'b', 's') },
    { 0, 0 },
};

#if CONFIG_LIBNUT_MUXER
static int av_write(void * h, size_t len, const uint8_t * buf) {
    AVIOContext * bc = h;
    avio_write(bc, buf, len);
    //avio_flush(bc);
    return len;
}

static int nut_write_header(AVFormatContext * avf) {
    NUTContext * priv = avf->priv_data;
    AVIOContext * bc = avf->pb;
    nut_muxer_opts_tt mopts = {
        .output = {
            .priv = bc,
            .write = av_write,
        },
        .alloc = { av_malloc, av_realloc, av_free },
        .write_index = 1,
        .realtime_stream = 0,
        .max_distance = 32768,
        .fti = NULL,
    };
    nut_stream_header_tt * s;
    int i;

    priv->s = s = av_mallocz_array(avf->nb_streams + 1, sizeof*s);
    if(!s)
        return AVERROR(ENOMEM);

    for (i = 0; i < avf->nb_streams; i++) {
        AVCodecContext * codec = avf->streams[i]->codec;
        int j;
        int fourcc = 0;
        int num, denom, ssize;

        s[i].type = codec->codec_type == AVMEDIA_TYPE_VIDEO ? NUT_VIDEO_CLASS : NUT_AUDIO_CLASS;

        if (codec->codec_tag) fourcc = codec->codec_tag;
        else fourcc = ff_codec_get_tag(nut_tags, codec->codec_id);

        if (!fourcc) {
            if (codec->codec_type == AVMEDIA_TYPE_VIDEO) fourcc = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id);
            if (codec->codec_type == AVMEDIA_TYPE_AUDIO) fourcc = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id);
        }

        s[i].fourcc_len = 4;
        s[i].fourcc = av_malloc(s[i].fourcc_len);
        for (j = 0; j < s[i].fourcc_len; j++) s[i].fourcc[j] = (fourcc >> (j*8)) & 0xFF;

        ff_parse_specific_params(codec, &num, &ssize, &denom);
        avpriv_set_pts_info(avf->streams[i], 60, denom, num);

        s[i].time_base.num = denom;
        s[i].time_base.den = num;

        s[i].fixed_fps = 0;
        s[i].decode_delay = codec->has_b_frames;
        s[i].codec_specific_len = codec->extradata_size;
        s[i].codec_specific = codec->extradata;

        if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
            s[i].width = codec->width;
            s[i].height = codec->height;
            s[i].sample_width = 0;
            s[i].sample_height = 0;
            s[i].colorspace_type = 0;
        } else {
            s[i].samplerate_num = codec->sample_rate;
            s[i].samplerate_denom = 1;
            s[i].channel_count = codec->channels;
        }
    }

    s[avf->nb_streams].type = -1;
    priv->nut = nut_muxer_init(&mopts, s, NULL);

    return 0;
}

static int nut_write_packet(AVFormatContext * avf, AVPacket * pkt) {
    NUTContext * priv = avf->priv_data;
    nut_packet_tt p;

    p.len = pkt->size;
    p.stream = pkt->stream_index;
    p.pts = pkt->pts;
    p.flags = pkt->flags & AV_PKT_FLAG_KEY ? NUT_FLAG_KEY : 0;
    p.next_pts = 0;

    nut_write_frame_reorder(priv->nut, &p, pkt->data);

    return 0;
}

static int nut_write_trailer(AVFormatContext * avf) {
    AVIOContext * bc = avf->pb;
    NUTContext * priv = avf->priv_data;
    int i;

    nut_muxer_uninit_reorder(priv->nut);
    avio_flush(bc);

    for(i = 0; priv->s[i].type != -1; i++ ) av_freep(&priv->s[i].fourcc);
    av_freep(&priv->s);

    return 0;
}

AVOutputFormat ff_libnut_muxer = {
    .name              = "libnut",
    .long_name         = "nut format",
    .mime_type         = "video/x-nut",
    .extensions        = "nut",
    .priv_data_size    = sizeof(NUTContext),
    .audio_codec       = AV_CODEC_ID_VORBIS,
    .video_codec       = AV_CODEC_ID_MPEG4,
    .write_header      = nut_write_header,
    .write_packet      = nut_write_packet,
    .write_trailer     = nut_write_trailer,
    .flags             = AVFMT_GLOBALHEADER,
};
#endif /* CONFIG_LIBNUT_MUXER */

static int nut_probe(AVProbeData *p) {
    if (!memcmp(p->buf, ID_STRING, ID_LENGTH)) return AVPROBE_SCORE_MAX;

    return 0;
}

static size_t av_read(void * h, size_t len, uint8_t * buf) {
    AVIOContext * bc = h;
    return avio_read(bc, buf, len);
}

static off_t av_seek(void * h, long long pos, int whence) {
    AVIOContext * bc = h;
    if (whence == SEEK_END) {
        pos = avio_size(bc) + pos;
        whence = SEEK_SET;
    }
    return avio_seek(bc, pos, whence);
}

static int nut_read_header(AVFormatContext * avf) {
    NUTContext * priv = avf->priv_data;
    AVIOContext * bc = avf->pb;
    nut_demuxer_opts_tt dopts = {
        .input = {
            .priv = bc,
            .seek = av_seek,
            .read = av_read,
            .eof = NULL,
            .file_pos = 0,
        },
        .alloc = { av_malloc, av_realloc, av_free },
        .read_index = 1,
        .cache_syncpoints = 1,
    };
    nut_context_tt * nut = priv->nut = nut_demuxer_init(&dopts);
    nut_stream_header_tt * s;
    int ret, i;

    if(!nut)
        return -1;

    if ((ret = nut_read_headers(nut, &s, NULL))) {
        av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret));
        nut_demuxer_uninit(nut);
        priv->nut = NULL;
        return -1;
    }

    priv->s = s;

    for (i = 0; s[i].type != -1 && i < 2; i++) {
        AVStream * st = avformat_new_stream(avf, NULL);
        int j;

        if (!st)
            return AVERROR(ENOMEM);

        for (j = 0; j < s[i].fourcc_len && j < 8; j++) st->codec->codec_tag |= s[i].fourcc[j]<<(j*8);

        st->codec->has_b_frames = s[i].decode_delay;

        st->codec->extradata_size = s[i].codec_specific_len;
        if (st->codec->extradata_size) {
            if(ff_alloc_extradata(st->codec, st->codec->extradata_size)){
                nut_demuxer_uninit(nut);
                priv->nut = NULL;
                return AVERROR(ENOMEM);
            }
            memcpy(st->codec->extradata, s[i].codec_specific, st->codec->extradata_size);
        }

        avpriv_set_pts_info(avf->streams[i], 60, s[i].time_base.num, s[i].time_base.den);
        st->start_time = 0;
        st->duration = s[i].max_pts;

        st->codec->codec_id = ff_codec_get_id(nut_tags, st->codec->codec_tag);

        switch(s[i].type) {
        case NUT_AUDIO_CLASS:
            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
            if (st->codec->codec_id == AV_CODEC_ID_NONE) st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, st->codec->codec_tag);

            st->codec->channels = s[i].channel_count;
            st->codec->sample_rate = s[i].samplerate_num / s[i].samplerate_denom;
            break;
        case NUT_VIDEO_CLASS:
            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
            if (st->codec->codec_id == AV_CODEC_ID_NONE) st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, st->codec->codec_tag);

            st->codec->width = s[i].width;
            st->codec->height = s[i].height;
            st->sample_aspect_ratio.num = s[i].sample_width;
            st->sample_aspect_ratio.den = s[i].sample_height;
            break;
        }
        if (st->codec->codec_id == AV_CODEC_ID_NONE) av_log(avf, AV_LOG_ERROR, "Unknown codec?!\n");
    }

    return 0;
}

static int nut_read_packet(AVFormatContext * avf, AVPacket * pkt) {
    NUTContext * priv = avf->priv_data;
    nut_packet_tt pd;
    int ret;

    ret = nut_read_next_packet(priv->nut, &pd);

    if (ret || av_new_packet(pkt, pd.len) < 0) {
        if (ret != NUT_ERR_EOF)
            av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret));
        return -1;
    }

    if (pd.flags & NUT_FLAG_KEY) pkt->flags |= AV_PKT_FLAG_KEY;
    pkt->pts = pd.pts;
    pkt->stream_index = pd.stream;
    pkt->pos = avio_tell(avf->pb);

    ret = nut_read_frame(priv->nut, &pd.len, pkt->data);

    return ret;
}

static int nut_read_seek(AVFormatContext * avf, int stream_index, int64_t target_ts, int flags) {
    NUTContext * priv = avf->priv_data;
    int active_streams[] = { stream_index, -1 };
    double time_pos = target_ts * priv->s[stream_index].time_base.num / (double)priv->s[stream_index].time_base.den;

    if (nut_seek(priv->nut, time_pos, 2*!(flags & AVSEEK_FLAG_BACKWARD), active_streams)) return -1;

    return 0;
}

static int nut_read_close(AVFormatContext *s) {
    NUTContext * priv = s->priv_data;

    nut_demuxer_uninit(priv->nut);

    return 0;
}

AVInputFormat ff_libnut_demuxer = {
    .name           = "libnut",
    .long_name      = NULL_IF_CONFIG_SMALL("NUT format"),
    .priv_data_size = sizeof(NUTContext),
    .read_probe     = nut_probe,
    .read_header    = nut_read_header,
    .read_packet    = nut_read_packet,
    .read_close     = nut_read_close,
    .read_seek      = nut_read_seek,
    .extensions     = "nut",
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* NUT (de)muxing via libnut
	3	* copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
	4	*
	5	* This file is part of FFmpeg.
	6	*
	7	* FFmpeg is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU Lesser General Public
	9	* License as published by the Free Software Foundation; either
	10	* version 2.1 of the License, or (at your option) any later version.
	11	*
	12	* FFmpeg is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* Lesser General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public
	18	* License along with FFmpeg; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	20	*/
	21
	22	/**
	23	* @file
	24	* NUT demuxing and muxing via libnut.
	25	* @author Oded Shimon <ods15@ods15.dyndns.org>
	26	*/
	27
	28	#include "avformat.h"
	29	#include "internal.h"
	30	#include "riff.h"
	31	#include <libnut.h>
	32
	33	#define ID_STRING "nut/multimedia container"
	34	#define ID_LENGTH (strlen(ID_STRING) + 1)
	35
	36	typedef struct {
	37	nut_context_tt * nut;
	38	nut_stream_header_tt * s;
	39	} NUTContext;
	40
	41	static const AVCodecTag nut_tags[] = {
	42	{ AV_CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
	43	{ AV_CODEC_ID_MP3, MKTAG('m', 'p', '3', ' ') },
	44	{ AV_CODEC_ID_VORBIS, MKTAG('v', 'r', 'b', 's') },
	45	{ 0, 0 },
	46	};
	47
	48	#if CONFIG_LIBNUT_MUXER
	49	static int av_write(void * h, size_t len, const uint8_t * buf) {
	50	AVIOContext * bc = h;
	51	avio_write(bc, buf, len);
	52	//avio_flush(bc);
	53	return len;
	54	}
	55
	56	static int nut_write_header(AVFormatContext * avf) {
	57	NUTContext * priv = avf->priv_data;
	58	AVIOContext * bc = avf->pb;
	59	nut_muxer_opts_tt mopts = {
	60	.output = {
	61	.priv = bc,
	62	.write = av_write,
	63	},
	64	.alloc = { av_malloc, av_realloc, av_free },
65	.write_index = 1,
66	.realtime_stream = 0,
67	.max_distance = 32768,
68	.fti = NULL,
69	};
70	nut_stream_header_tt * s;
71	int i;
72
73	priv->s = s = av_mallocz_array(avf->nb_streams + 1, sizeof*s);
74	if(!s)
75	return AVERROR(ENOMEM);
76
77	for (i = 0; i < avf->nb_streams; i++) {
78	AVCodecContext * codec = avf->streams[i]->codec;
79	int j;
80	int fourcc = 0;
81	int num, denom, ssize;
82
83	s[i].type = codec->codec_type == AVMEDIA_TYPE_VIDEO ? NUT_VIDEO_CLASS : NUT_AUDIO_CLASS;
84
85	if (codec->codec_tag) fourcc = codec->codec_tag;
86	else fourcc = ff_codec_get_tag(nut_tags, codec->codec_id);
87
88	if (!fourcc) {
89	if (codec->codec_type == AVMEDIA_TYPE_VIDEO) fourcc = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id);
90	if (codec->codec_type == AVMEDIA_TYPE_AUDIO) fourcc = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id);
91	}
92
93	s[i].fourcc_len = 4;
94	s[i].fourcc = av_malloc(s[i].fourcc_len);
95	for (j = 0; j < s[i].fourcc_len; j++) s[i].fourcc[j] = (fourcc >> (j*8)) & 0xFF;
96
97	ff_parse_specific_params(codec, &num, &ssize, &denom);
98	avpriv_set_pts_info(avf->streams[i], 60, denom, num);
99
100	s[i].time_base.num = denom;
101	s[i].time_base.den = num;
102
103	s[i].fixed_fps = 0;
104	s[i].decode_delay = codec->has_b_frames;
105	s[i].codec_specific_len = codec->extradata_size;
106	s[i].codec_specific = codec->extradata;
107
108	if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
109	s[i].width = codec->width;
110	s[i].height = codec->height;
111	s[i].sample_width = 0;
112	s[i].sample_height = 0;
113	s[i].colorspace_type = 0;
114	} else {
115	s[i].samplerate_num = codec->sample_rate;
116	s[i].samplerate_denom = 1;
117	s[i].channel_count = codec->channels;
118	}
119	}
120
121	s[avf->nb_streams].type = -1;
122	priv->nut = nut_muxer_init(&mopts, s, NULL);
123
124	return 0;
125	}
126
127	static int nut_write_packet(AVFormatContext * avf, AVPacket * pkt) {
128	NUTContext * priv = avf->priv_data;
129	nut_packet_tt p;
130
131	p.len = pkt->size;
132	p.stream = pkt->stream_index;
133	p.pts = pkt->pts;
134	p.flags = pkt->flags & AV_PKT_FLAG_KEY ? NUT_FLAG_KEY : 0;
135	p.next_pts = 0;
136
137	nut_write_frame_reorder(priv->nut, &p, pkt->data);
138
139	return 0;
140	}
141
142	static int nut_write_trailer(AVFormatContext * avf) {
143	AVIOContext * bc = avf->pb;
144	NUTContext * priv = avf->priv_data;
145	int i;
146
147	nut_muxer_uninit_reorder(priv->nut);
148	avio_flush(bc);
149
150	for(i = 0; priv->s[i].type != -1; i++ ) av_freep(&priv->s[i].fourcc);
151	av_freep(&priv->s);
152
153	return 0;
154	}
155
156	AVOutputFormat ff_libnut_muxer = {
157	.name = "libnut",
158	.long_name = "nut format",
159	.mime_type = "video/x-nut",
160	.extensions = "nut",
161	.priv_data_size = sizeof(NUTContext),
162	.audio_codec = AV_CODEC_ID_VORBIS,
163	.video_codec = AV_CODEC_ID_MPEG4,
164	.write_header = nut_write_header,
165	.write_packet = nut_write_packet,
166	.write_trailer = nut_write_trailer,
167	.flags = AVFMT_GLOBALHEADER,
168	};
169	#endif /* CONFIG_LIBNUT_MUXER */
170
171	static int nut_probe(AVProbeData *p) {
172	if (!memcmp(p->buf, ID_STRING, ID_LENGTH)) return AVPROBE_SCORE_MAX;
173
174	return 0;
175	}
176
177	static size_t av_read(void * h, size_t len, uint8_t * buf) {
178	AVIOContext * bc = h;
179	return avio_read(bc, buf, len);
180	}
181
182	static off_t av_seek(void * h, long long pos, int whence) {
183	AVIOContext * bc = h;
184	if (whence == SEEK_END) {
185	pos = avio_size(bc) + pos;
186	whence = SEEK_SET;
187	}
188	return avio_seek(bc, pos, whence);
189	}
190
191	static int nut_read_header(AVFormatContext * avf) {
192	NUTContext * priv = avf->priv_data;
193	AVIOContext * bc = avf->pb;
194	nut_demuxer_opts_tt dopts = {
195	.input = {
196	.priv = bc,
197	.seek = av_seek,
198	.read = av_read,
199	.eof = NULL,
200	.file_pos = 0,
201	},
202	.alloc = { av_malloc, av_realloc, av_free },
203	.read_index = 1,
204	.cache_syncpoints = 1,
205	};
206	nut_context_tt * nut = priv->nut = nut_demuxer_init(&dopts);
207	nut_stream_header_tt * s;
208	int ret, i;
209
210	if(!nut)
211	return -1;
212
213	if ((ret = nut_read_headers(nut, &s, NULL))) {
214	av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret));
215	nut_demuxer_uninit(nut);
216	priv->nut = NULL;
217	return -1;
218	}
219
220	priv->s = s;
221
222	for (i = 0; s[i].type != -1 && i < 2; i++) {
223	AVStream * st = avformat_new_stream(avf, NULL);
224	int j;
225
226	if (!st)
227	return AVERROR(ENOMEM);
228
229	for (j = 0; j < s[i].fourcc_len && j < 8; j++) st->codec->codec_tag \|= s[i].fourcc[j]<<(j*8);
230
231	st->codec->has_b_frames = s[i].decode_delay;
232
233	st->codec->extradata_size = s[i].codec_specific_len;
234	if (st->codec->extradata_size) {
235	if(ff_alloc_extradata(st->codec, st->codec->extradata_size)){
236	nut_demuxer_uninit(nut);
237	priv->nut = NULL;
238	return AVERROR(ENOMEM);
239	}
240	memcpy(st->codec->extradata, s[i].codec_specific, st->codec->extradata_size);
241	}
242
243	avpriv_set_pts_info(avf->streams[i], 60, s[i].time_base.num, s[i].time_base.den);
244	st->start_time = 0;
245	st->duration = s[i].max_pts;
246
247	st->codec->codec_id = ff_codec_get_id(nut_tags, st->codec->codec_tag);
248
249	switch(s[i].type) {
250	case NUT_AUDIO_CLASS:
251	st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
252	if (st->codec->codec_id == AV_CODEC_ID_NONE) st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, st->codec->codec_tag);
253
254	st->codec->channels = s[i].channel_count;
255	st->codec->sample_rate = s[i].samplerate_num / s[i].samplerate_denom;
256	break;
257	case NUT_VIDEO_CLASS:
258	st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
259	if (st->codec->codec_id == AV_CODEC_ID_NONE) st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, st->codec->codec_tag);
260
261	st->codec->width = s[i].width;
262	st->codec->height = s[i].height;
263	st->sample_aspect_ratio.num = s[i].sample_width;
264	st->sample_aspect_ratio.den = s[i].sample_height;
265	break;
266	}
267	if (st->codec->codec_id == AV_CODEC_ID_NONE) av_log(avf, AV_LOG_ERROR, "Unknown codec?!\n");
268	}
269
270	return 0;
271	}
272
273	static int nut_read_packet(AVFormatContext * avf, AVPacket * pkt) {
274	NUTContext * priv = avf->priv_data;
275	nut_packet_tt pd;
276	int ret;
277
278	ret = nut_read_next_packet(priv->nut, &pd);
279
280	if (ret \|\| av_new_packet(pkt, pd.len) < 0) {
281	if (ret != NUT_ERR_EOF)
282	av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret));
283	return -1;
284	}
285
286	if (pd.flags & NUT_FLAG_KEY) pkt->flags \|= AV_PKT_FLAG_KEY;
287	pkt->pts = pd.pts;
288	pkt->stream_index = pd.stream;
289	pkt->pos = avio_tell(avf->pb);
290
291	ret = nut_read_frame(priv->nut, &pd.len, pkt->data);
292
293	return ret;
294	}
295
296	static int nut_read_seek(AVFormatContext * avf, int stream_index, int64_t target_ts, int flags) {
297	NUTContext * priv = avf->priv_data;
298	int active_streams[] = { stream_index, -1 };
299	double time_pos = target_ts * priv->s[stream_index].time_base.num / (double)priv->s[stream_index].time_base.den;
300
301	if (nut_seek(priv->nut, time_pos, 2*!(flags & AVSEEK_FLAG_BACKWARD), active_streams)) return -1;
302
303	return 0;
304	}
305
306	static int nut_read_close(AVFormatContext *s) {
307	NUTContext * priv = s->priv_data;
308
309	nut_demuxer_uninit(priv->nut);
310
311	return 0;
312	}
313
314	AVInputFormat ff_libnut_demuxer = {
315	.name = "libnut",
316	.long_name = NULL_IF_CONFIG_SMALL("NUT format"),
317	.priv_data_size = sizeof(NUTContext),
318	.read_probe = nut_probe,
319	.read_header = nut_read_header,
320	.read_packet = nut_read_packet,
321	.read_close = nut_read_close,
322	.read_seek = nut_read_seek,
323	.extensions = "nut",
324	};