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

/*
 * Bink demuxer
 * Copyright (c) 2008-2010 Peter Ross (pross@xvid.org)
 * Copyright (c) 2009 Daniel Verkamp (daniel@drv.nu)
 *
 * 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
 * Bink demuxer
 *
 * Technical details here:
 *  http://wiki.multimedia.cx/index.php?title=Bink_Container
 */

#include <inttypes.h>

#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "internal.h"

enum BinkAudFlags {
    BINK_AUD_16BITS = 0x4000, ///< prefer 16-bit output
    BINK_AUD_STEREO = 0x2000,
    BINK_AUD_USEDCT = 0x1000,
};

#define BINK_EXTRADATA_SIZE     1
#define BINK_MAX_AUDIO_TRACKS   256
#define BINK_MAX_WIDTH          7680
#define BINK_MAX_HEIGHT         4800

typedef struct {
    uint32_t file_size;

    uint32_t num_audio_tracks;
    int current_track;      ///< audio track to return in next packet
    int64_t video_pts;
    int64_t audio_pts[BINK_MAX_AUDIO_TRACKS];

    uint32_t remain_packet_size;
} BinkDemuxContext;

static int probe(AVProbeData *p)
{
    const uint8_t *b = p->buf;

    if (((b[0] == 'B' && b[1] == 'I' && b[2] == 'K' &&
         (b[3] == 'b' || b[3] == 'f' || b[3] == 'g' || b[3] == 'h' || b[3] == 'i')) ||
         (b[0] == 'K' && b[1] == 'B' && b[2] == '2' && /* Bink 2 */
         (b[3] == 'a' || b[3] == 'd' || b[3] == 'f' || b[3] == 'g'))) &&
        AV_RL32(b+8) > 0 &&  // num_frames
        AV_RL32(b+20) > 0 && AV_RL32(b+20) <= BINK_MAX_WIDTH &&
        AV_RL32(b+24) > 0 && AV_RL32(b+24) <= BINK_MAX_HEIGHT &&
        AV_RL32(b+28) > 0 && AV_RL32(b+32) > 0)  // fps num,den
        return AVPROBE_SCORE_MAX;
    return 0;
}

static int read_header(AVFormatContext *s)
{
    BinkDemuxContext *bink = s->priv_data;
    AVIOContext *pb = s->pb;
    uint32_t fps_num, fps_den;
    AVStream *vst, *ast;
    unsigned int i;
    uint32_t pos, next_pos;
    uint16_t flags;
    int keyframe;
    int ret;

    vst = avformat_new_stream(s, NULL);
    if (!vst)
        return AVERROR(ENOMEM);

    vst->codec->codec_tag = avio_rl32(pb);

    bink->file_size = avio_rl32(pb) + 8;
    vst->duration   = avio_rl32(pb);

    if (vst->duration > 1000000) {
        av_log(s, AV_LOG_ERROR, "invalid header: more than 1000000 frames\n");
        return AVERROR(EIO);
    }

    if (avio_rl32(pb) > bink->file_size) {
        av_log(s, AV_LOG_ERROR,
               "invalid header: largest frame size greater than file size\n");
        return AVERROR(EIO);
    }

    avio_skip(pb, 4);

    vst->codec->width  = avio_rl32(pb);
    vst->codec->height = avio_rl32(pb);

    fps_num = avio_rl32(pb);
    fps_den = avio_rl32(pb);
    if (fps_num == 0 || fps_den == 0) {
        av_log(s, AV_LOG_ERROR,
               "invalid header: invalid fps (%"PRIu32"/%"PRIu32")\n",
               fps_num, fps_den);
        return AVERROR(EIO);
    }
    avpriv_set_pts_info(vst, 64, fps_den, fps_num);
    vst->avg_frame_rate = av_inv_q(vst->time_base);

    vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
    vst->codec->codec_id   = AV_CODEC_ID_BINKVIDEO;

    if ((vst->codec->codec_tag & 0xFFFFFF) == MKTAG('K', 'B', '2', 0)) {
        av_log(s, AV_LOG_WARNING, "Bink 2 video is not implemented\n");
        vst->codec->codec_id = AV_CODEC_ID_NONE;
    }

    if (ff_get_extradata(vst->codec, pb, 4) < 0)
        return AVERROR(ENOMEM);

    bink->num_audio_tracks = avio_rl32(pb);

    if (bink->num_audio_tracks > BINK_MAX_AUDIO_TRACKS) {
        av_log(s, AV_LOG_ERROR,
               "invalid header: more than "AV_STRINGIFY(BINK_MAX_AUDIO_TRACKS)" audio tracks (%"PRIu32")\n",
               bink->num_audio_tracks);
        return AVERROR(EIO);
    }

    if (bink->num_audio_tracks) {
        avio_skip(pb, 4 * bink->num_audio_tracks);

        for (i = 0; i < bink->num_audio_tracks; i++) {
            ast = avformat_new_stream(s, NULL);
            if (!ast)
                return AVERROR(ENOMEM);
            ast->codec->codec_type  = AVMEDIA_TYPE_AUDIO;
            ast->codec->codec_tag   = 0;
            ast->codec->sample_rate = avio_rl16(pb);
            avpriv_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
            flags = avio_rl16(pb);
            ast->codec->codec_id = flags & BINK_AUD_USEDCT ?
                                   AV_CODEC_ID_BINKAUDIO_DCT : AV_CODEC_ID_BINKAUDIO_RDFT;
            if (flags & BINK_AUD_STEREO) {
                ast->codec->channels       = 2;
                ast->codec->channel_layout = AV_CH_LAYOUT_STEREO;
            } else {
                ast->codec->channels       = 1;
                ast->codec->channel_layout = AV_CH_LAYOUT_MONO;
            }
            if (ff_alloc_extradata(ast->codec, 4))
                return AVERROR(ENOMEM);
            AV_WL32(ast->codec->extradata, vst->codec->codec_tag);
        }

        for (i = 0; i < bink->num_audio_tracks; i++)
            s->streams[i + 1]->id = avio_rl32(pb);
    }

    /* frame index table */
    next_pos = avio_rl32(pb);
    for (i = 0; i < vst->duration; i++) {
        pos = next_pos;
        if (i == vst->duration - 1) {
            next_pos = bink->file_size;
            keyframe = 0;
        } else {
            next_pos = avio_rl32(pb);
            keyframe = pos & 1;
        }
        pos &= ~1;
        next_pos &= ~1;

        if (next_pos <= pos) {
            av_log(s, AV_LOG_ERROR, "invalid frame index table\n");
            return AVERROR(EIO);
        }
        if ((ret = av_add_index_entry(vst, pos, i, next_pos - pos, 0,
                                      keyframe ? AVINDEX_KEYFRAME : 0)) < 0)
            return ret;
    }

    avio_seek(pb, vst->index_entries[0].pos, SEEK_SET);

    bink->current_track = -1;
    return 0;
}

static int read_packet(AVFormatContext *s, AVPacket *pkt)
{
    BinkDemuxContext *bink = s->priv_data;
    AVIOContext *pb = s->pb;
    int ret;

    if (bink->current_track < 0) {
        int index_entry;
        AVStream *st = s->streams[0]; // stream 0 is video stream with index

        if (bink->video_pts >= st->duration)
            return AVERROR_EOF;

        index_entry = av_index_search_timestamp(st, bink->video_pts,
                                                AVSEEK_FLAG_ANY);
        if (index_entry < 0) {
            av_log(s, AV_LOG_ERROR,
                   "could not find index entry for frame %"PRId64"\n",
                   bink->video_pts);
            return AVERROR(EIO);
        }

        bink->remain_packet_size = st->index_entries[index_entry].size;
        bink->current_track = 0;
    }

    while (bink->current_track < bink->num_audio_tracks) {
        uint32_t audio_size = avio_rl32(pb);
        if (audio_size > bink->remain_packet_size - 4) {
            av_log(s, AV_LOG_ERROR,
                   "frame %"PRId64": audio size in header (%"PRIu32") > size of packet left (%"PRIu32")\n",
                   bink->video_pts, audio_size, bink->remain_packet_size);
            return AVERROR(EIO);
        }
        bink->remain_packet_size -= 4 + audio_size;
        bink->current_track++;
        if (audio_size >= 4) {
            /* get one audio packet per track */
            if ((ret = av_get_packet(pb, pkt, audio_size)) < 0)
                return ret;
            pkt->stream_index = bink->current_track;
            pkt->pts = bink->audio_pts[bink->current_track - 1];

            /* Each audio packet reports the number of decompressed samples
               (in bytes). We use this value to calcuate the audio PTS */
            if (pkt->size >= 4)
                bink->audio_pts[bink->current_track -1] +=
                    AV_RL32(pkt->data) / (2 * s->streams[bink->current_track]->codec->channels);
            return 0;
        } else {
            avio_skip(pb, audio_size);
        }
    }

    /* get video packet */
    if ((ret = av_get_packet(pb, pkt, bink->remain_packet_size)) < 0)
        return ret;
    pkt->stream_index = 0;
    pkt->pts = bink->video_pts++;
    pkt->flags |= AV_PKT_FLAG_KEY;

    /* -1 instructs the next call to read_packet() to read the next frame */
    bink->current_track = -1;

    return 0;
}

static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
{
    BinkDemuxContext *bink = s->priv_data;
    AVStream *vst = s->streams[0];

    if (!s->pb->seekable)
        return -1;

    /* seek to the first frame */
    if (avio_seek(s->pb, vst->index_entries[0].pos, SEEK_SET) < 0)
        return -1;

    bink->video_pts = 0;
    memset(bink->audio_pts, 0, sizeof(bink->audio_pts));
    bink->current_track = -1;
    return 0;
}

AVInputFormat ff_bink_demuxer = {
    .name           = "bink",
    .long_name      = NULL_IF_CONFIG_SMALL("Bink"),
    .priv_data_size = sizeof(BinkDemuxContext),
    .read_probe     = probe,
    .read_header    = read_header,
    .read_packet    = read_packet,
    .read_seek      = read_seek,
    .flags          = AVFMT_SHOW_IDS,
};
Commit	Line	Data
	1	/*
	2	* Bink demuxer
	3	* Copyright (c) 2008-2010 Peter Ross (pross@xvid.org)
	4	* Copyright (c) 2009 Daniel Verkamp (daniel@drv.nu)
	5	*
	6	* This file is part of FFmpeg.
	7	*
	8	* FFmpeg is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU Lesser General Public
	10	* License as published by the Free Software Foundation; either
	11	* version 2.1 of the License, or (at your option) any later version.
	12	*
	13	* FFmpeg is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* Lesser General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU Lesser General Public
	19	* License along with FFmpeg; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	21	*/
	22
	23	/**
	24	* @file
	25	* Bink demuxer
	26	*
	27	* Technical details here:
	28	* http://wiki.multimedia.cx/index.php?title=Bink_Container
	29	*/
	30
	31	#include <inttypes.h>
	32
	33	#include "libavutil/channel_layout.h"
	34	#include "libavutil/intreadwrite.h"
	35	#include "avformat.h"
	36	#include "internal.h"
	37
	38	enum BinkAudFlags {
	39	BINK_AUD_16BITS = 0x4000, ///< prefer 16-bit output
	40	BINK_AUD_STEREO = 0x2000,
	41	BINK_AUD_USEDCT = 0x1000,
	42	};
	43
	44	#define BINK_EXTRADATA_SIZE 1
	45	#define BINK_MAX_AUDIO_TRACKS 256
	46	#define BINK_MAX_WIDTH 7680
	47	#define BINK_MAX_HEIGHT 4800
	48
	49	typedef struct {
	50	uint32_t file_size;
	51
	52	uint32_t num_audio_tracks;
	53	int current_track; ///< audio track to return in next packet
	54	int64_t video_pts;
	55	int64_t audio_pts[BINK_MAX_AUDIO_TRACKS];
	56
	57	uint32_t remain_packet_size;
	58	} BinkDemuxContext;
	59
	60	static int probe(AVProbeData *p)
	61	{
	62	const uint8_t *b = p->buf;
	63
	64	if (((b[0] == 'B' && b[1] == 'I' && b[2] == 'K' &&
	65	(b[3] == 'b' \|\| b[3] == 'f' \|\| b[3] == 'g' \|\| b[3] == 'h' \|\| b[3] == 'i')) \|\|
	66	(b[0] == 'K' && b[1] == 'B' && b[2] == '2' && /* Bink 2 */
	67	(b[3] == 'a' \|\| b[3] == 'd' \|\| b[3] == 'f' \|\| b[3] == 'g'))) &&
	68	AV_RL32(b+8) > 0 && // num_frames
	69	AV_RL32(b+20) > 0 && AV_RL32(b+20) <= BINK_MAX_WIDTH &&
	70	AV_RL32(b+24) > 0 && AV_RL32(b+24) <= BINK_MAX_HEIGHT &&
	71	AV_RL32(b+28) > 0 && AV_RL32(b+32) > 0) // fps num,den
	72	return AVPROBE_SCORE_MAX;
	73	return 0;
	74	}
	75
	76	static int read_header(AVFormatContext *s)
	77	{
	78	BinkDemuxContext *bink = s->priv_data;
	79	AVIOContext *pb = s->pb;
	80	uint32_t fps_num, fps_den;
	81	AVStream vst, ast;
	82	unsigned int i;
	83	uint32_t pos, next_pos;
	84	uint16_t flags;
	85	int keyframe;
	86	int ret;
	87
	88	vst = avformat_new_stream(s, NULL);
	89	if (!vst)
	90	return AVERROR(ENOMEM);
	91
	92	vst->codec->codec_tag = avio_rl32(pb);
	93
	94	bink->file_size = avio_rl32(pb) + 8;
	95	vst->duration = avio_rl32(pb);
	96
	97	if (vst->duration > 1000000) {
	98	av_log(s, AV_LOG_ERROR, "invalid header: more than 1000000 frames\n");
	99	return AVERROR(EIO);
	100	}
	101
	102	if (avio_rl32(pb) > bink->file_size) {
	103	av_log(s, AV_LOG_ERROR,
	104	"invalid header: largest frame size greater than file size\n");
	105	return AVERROR(EIO);
	106	}
	107
	108	avio_skip(pb, 4);
	109
	110	vst->codec->width = avio_rl32(pb);
	111	vst->codec->height = avio_rl32(pb);
	112
	113	fps_num = avio_rl32(pb);
	114	fps_den = avio_rl32(pb);
	115	if (fps_num == 0 \|\| fps_den == 0) {
	116	av_log(s, AV_LOG_ERROR,
	117	"invalid header: invalid fps (%"PRIu32"/%"PRIu32")\n",
	118	fps_num, fps_den);
	119	return AVERROR(EIO);
	120	}
	121	avpriv_set_pts_info(vst, 64, fps_den, fps_num);
	122	vst->avg_frame_rate = av_inv_q(vst->time_base);
	123
	124	vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
	125	vst->codec->codec_id = AV_CODEC_ID_BINKVIDEO;
	126
	127	if ((vst->codec->codec_tag & 0xFFFFFF) == MKTAG('K', 'B', '2', 0)) {
	128	av_log(s, AV_LOG_WARNING, "Bink 2 video is not implemented\n");
	129	vst->codec->codec_id = AV_CODEC_ID_NONE;
	130	}
	131
	132	if (ff_get_extradata(vst->codec, pb, 4) < 0)
	133	return AVERROR(ENOMEM);
	134
	135	bink->num_audio_tracks = avio_rl32(pb);
	136
	137	if (bink->num_audio_tracks > BINK_MAX_AUDIO_TRACKS) {
	138	av_log(s, AV_LOG_ERROR,
	139	"invalid header: more than "AV_STRINGIFY(BINK_MAX_AUDIO_TRACKS)" audio tracks (%"PRIu32")\n",
	140	bink->num_audio_tracks);
	141	return AVERROR(EIO);
	142	}
	143
	144	if (bink->num_audio_tracks) {
	145	avio_skip(pb, 4 * bink->num_audio_tracks);
	146
	147	for (i = 0; i < bink->num_audio_tracks; i++) {
	148	ast = avformat_new_stream(s, NULL);
	149	if (!ast)
	150	return AVERROR(ENOMEM);
	151	ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
	152	ast->codec->codec_tag = 0;
	153	ast->codec->sample_rate = avio_rl16(pb);
	154	avpriv_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
	155	flags = avio_rl16(pb);
	156	ast->codec->codec_id = flags & BINK_AUD_USEDCT ?
	157	AV_CODEC_ID_BINKAUDIO_DCT : AV_CODEC_ID_BINKAUDIO_RDFT;
	158	if (flags & BINK_AUD_STEREO) {
	159	ast->codec->channels = 2;
	160	ast->codec->channel_layout = AV_CH_LAYOUT_STEREO;
	161	} else {
	162	ast->codec->channels = 1;
	163	ast->codec->channel_layout = AV_CH_LAYOUT_MONO;
	164	}
	165	if (ff_alloc_extradata(ast->codec, 4))
	166	return AVERROR(ENOMEM);
	167	AV_WL32(ast->codec->extradata, vst->codec->codec_tag);
	168	}
	169
	170	for (i = 0; i < bink->num_audio_tracks; i++)
	171	s->streams[i + 1]->id = avio_rl32(pb);
	172	}
	173
	174	/* frame index table */
	175	next_pos = avio_rl32(pb);
	176	for (i = 0; i < vst->duration; i++) {
	177	pos = next_pos;
	178	if (i == vst->duration - 1) {
	179	next_pos = bink->file_size;
	180	keyframe = 0;
	181	} else {
	182	next_pos = avio_rl32(pb);
	183	keyframe = pos & 1;
	184	}
	185	pos &= ~1;
	186	next_pos &= ~1;
	187
	188	if (next_pos <= pos) {
	189	av_log(s, AV_LOG_ERROR, "invalid frame index table\n");
	190	return AVERROR(EIO);
	191	}
	192	if ((ret = av_add_index_entry(vst, pos, i, next_pos - pos, 0,
	193	keyframe ? AVINDEX_KEYFRAME : 0)) < 0)
	194	return ret;
	195	}
	196
	197	avio_seek(pb, vst->index_entries[0].pos, SEEK_SET);
	198
	199	bink->current_track = -1;
	200	return 0;
	201	}
	202
	203	static int read_packet(AVFormatContext s, AVPacket pkt)
	204	{
	205	BinkDemuxContext *bink = s->priv_data;
	206	AVIOContext *pb = s->pb;
	207	int ret;
	208
	209	if (bink->current_track < 0) {
	210	int index_entry;
	211	AVStream *st = s->streams[0]; // stream 0 is video stream with index
	212
	213	if (bink->video_pts >= st->duration)
	214	return AVERROR_EOF;
	215
	216	index_entry = av_index_search_timestamp(st, bink->video_pts,
	217	AVSEEK_FLAG_ANY);
	218	if (index_entry < 0) {
	219	av_log(s, AV_LOG_ERROR,
	220	"could not find index entry for frame %"PRId64"\n",
	221	bink->video_pts);
	222	return AVERROR(EIO);
	223	}
	224
	225	bink->remain_packet_size = st->index_entries[index_entry].size;
	226	bink->current_track = 0;
	227	}
	228
	229	while (bink->current_track < bink->num_audio_tracks) {
	230	uint32_t audio_size = avio_rl32(pb);
	231	if (audio_size > bink->remain_packet_size - 4) {
	232	av_log(s, AV_LOG_ERROR,
	233	"frame %"PRId64": audio size in header (%"PRIu32") > size of packet left (%"PRIu32")\n",
	234	bink->video_pts, audio_size, bink->remain_packet_size);
	235	return AVERROR(EIO);
	236	}
	237	bink->remain_packet_size -= 4 + audio_size;
	238	bink->current_track++;
	239	if (audio_size >= 4) {
	240	/* get one audio packet per track */
	241	if ((ret = av_get_packet(pb, pkt, audio_size)) < 0)
	242	return ret;
	243	pkt->stream_index = bink->current_track;
	244	pkt->pts = bink->audio_pts[bink->current_track - 1];
	245
	246	/* Each audio packet reports the number of decompressed samples
	247	(in bytes). We use this value to calcuate the audio PTS */
	248	if (pkt->size >= 4)
	249	bink->audio_pts[bink->current_track -1] +=
	250	AV_RL32(pkt->data) / (2 * s->streams[bink->current_track]->codec->channels);
	251	return 0;
	252	} else {
	253	avio_skip(pb, audio_size);
	254	}
	255	}
	256
	257	/* get video packet */
	258	if ((ret = av_get_packet(pb, pkt, bink->remain_packet_size)) < 0)
	259	return ret;
	260	pkt->stream_index = 0;
	261	pkt->pts = bink->video_pts++;
	262	pkt->flags \|= AV_PKT_FLAG_KEY;
	263
	264	/* -1 instructs the next call to read_packet() to read the next frame */
	265	bink->current_track = -1;
	266
	267	return 0;
	268	}
	269
	270	static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
	271	{
	272	BinkDemuxContext *bink = s->priv_data;
	273	AVStream *vst = s->streams[0];
	274
	275	if (!s->pb->seekable)
	276	return -1;
	277
	278	/* seek to the first frame */
	279	if (avio_seek(s->pb, vst->index_entries[0].pos, SEEK_SET) < 0)
	280	return -1;
	281
	282	bink->video_pts = 0;
	283	memset(bink->audio_pts, 0, sizeof(bink->audio_pts));
	284	bink->current_track = -1;
	285	return 0;
	286	}
	287
	288	AVInputFormat ff_bink_demuxer = {
	289	.name = "bink",
	290	.long_name = NULL_IF_CONFIG_SMALL("Bink"),
	291	.priv_data_size = sizeof(BinkDemuxContext),
	292	.read_probe = probe,
	293	.read_header = read_header,
	294	.read_packet = read_packet,
	295	.read_seek = read_seek,
	296	.flags = AVFMT_SHOW_IDS,
	297	};