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

/*
 * Sierra VMD Format Demuxer
 * Copyright (c) 2004 The FFmpeg Project
 *
 * 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
 * Sierra VMD file demuxer
 * by Vladimir "VAG" Gneushev (vagsoft at mail.ru)
 * for more information on the Sierra VMD file format, visit:
 *   http://www.pcisys.net/~melanson/codecs/
 */

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

#define VMD_HEADER_SIZE 0x0330
#define BYTES_PER_FRAME_RECORD 16

typedef struct {
  int stream_index;
  int64_t frame_offset;
  unsigned int frame_size;
  int64_t pts;
  int keyframe;
  unsigned char frame_record[BYTES_PER_FRAME_RECORD];
} vmd_frame;

typedef struct VmdDemuxContext {
    int video_stream_index;
    int audio_stream_index;

    unsigned int frame_count;
    unsigned int frames_per_block;
    vmd_frame *frame_table;
    unsigned int current_frame;
    int is_indeo3;

    int sample_rate;
    int64_t audio_sample_counter;
    int skiphdr;

    unsigned char vmd_header[VMD_HEADER_SIZE];
} VmdDemuxContext;

static int vmd_probe(AVProbeData *p)
{
    int w, h, sample_rate;
    if (p->buf_size < 806)
        return 0;
    /* check if the first 2 bytes of the file contain the appropriate size
     * of a VMD header chunk */
    if (AV_RL16(&p->buf[0]) != VMD_HEADER_SIZE - 2)
        return 0;
    w = AV_RL16(&p->buf[12]);
    h = AV_RL16(&p->buf[14]);
    sample_rate = AV_RL16(&p->buf[804]);
    if ((!w || w > 2048 || !h || h > 2048) &&
        sample_rate != 22050)
        return 0;

    /* only return half certainty since this check is a bit sketchy */
    return AVPROBE_SCORE_EXTENSION;
}

static int vmd_read_header(AVFormatContext *s)
{
    VmdDemuxContext *vmd = s->priv_data;
    AVIOContext *pb = s->pb;
    AVStream *st = NULL, *vst = NULL;
    unsigned int toc_offset;
    unsigned char *raw_frame_table;
    int raw_frame_table_size;
    int64_t current_offset;
    int i, j, ret;
    int width, height;
    unsigned int total_frames;
    int64_t current_audio_pts = 0;
    unsigned char chunk[BYTES_PER_FRAME_RECORD];
    int num, den;
    int sound_buffers;

    /* fetch the main header, including the 2 header length bytes */
    avio_seek(pb, 0, SEEK_SET);
    if (avio_read(pb, vmd->vmd_header, VMD_HEADER_SIZE) != VMD_HEADER_SIZE)
        return AVERROR(EIO);

    width = AV_RL16(&vmd->vmd_header[12]);
    height = AV_RL16(&vmd->vmd_header[14]);
    if (width && height) {
        if(vmd->vmd_header[24] == 'i' && vmd->vmd_header[25] == 'v' && vmd->vmd_header[26] == '3') {
            vmd->is_indeo3 = 1;
        } else {
            vmd->is_indeo3 = 0;
        }
        /* start up the decoders */
        vst = avformat_new_stream(s, NULL);
        if (!vst)
            return AVERROR(ENOMEM);
        avpriv_set_pts_info(vst, 33, 1, 10);
        vmd->video_stream_index = vst->index;
        vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
        vst->codec->codec_id = vmd->is_indeo3 ? AV_CODEC_ID_INDEO3 : AV_CODEC_ID_VMDVIDEO;
        vst->codec->codec_tag = 0;  /* no fourcc */
        vst->codec->width = width;
        vst->codec->height = height;
        if(vmd->is_indeo3 && vst->codec->width > 320){
            vst->codec->width >>= 1;
            vst->codec->height >>= 1;
        }
        if (ff_alloc_extradata(vst->codec, VMD_HEADER_SIZE))
            return AVERROR(ENOMEM);
        memcpy(vst->codec->extradata, vmd->vmd_header, VMD_HEADER_SIZE);
    }

    /* if sample rate is 0, assume no audio */
    vmd->sample_rate = AV_RL16(&vmd->vmd_header[804]);
    if (vmd->sample_rate) {
        st = avformat_new_stream(s, NULL);
        if (!st)
            return AVERROR(ENOMEM);
        vmd->audio_stream_index = st->index;
        st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
        st->codec->codec_id = AV_CODEC_ID_VMDAUDIO;
        st->codec->codec_tag = 0;  /* no fourcc */
        if (vmd->vmd_header[811] & 0x80) {
            st->codec->channels       = 2;
            st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
        } else {
            st->codec->channels       = 1;
            st->codec->channel_layout = AV_CH_LAYOUT_MONO;
        }
        st->codec->sample_rate = vmd->sample_rate;
        st->codec->block_align = AV_RL16(&vmd->vmd_header[806]);
        if (st->codec->block_align & 0x8000) {
            st->codec->bits_per_coded_sample = 16;
            st->codec->block_align = -(st->codec->block_align - 0x10000);
        } else {
            st->codec->bits_per_coded_sample = 8;
        }
        st->codec->bit_rate = st->codec->sample_rate *
            st->codec->bits_per_coded_sample * st->codec->channels;

        /* calculate pts */
        num = st->codec->block_align;
        den = st->codec->sample_rate * st->codec->channels;
        av_reduce(&num, &den, num, den, (1UL<<31)-1);
        if (vst)
            avpriv_set_pts_info(vst, 33, num, den);
        avpriv_set_pts_info(st, 33, num, den);
    }

    toc_offset = AV_RL32(&vmd->vmd_header[812]);
    vmd->frame_count = AV_RL16(&vmd->vmd_header[6]);
    vmd->frames_per_block = AV_RL16(&vmd->vmd_header[18]);
    avio_seek(pb, toc_offset, SEEK_SET);

    raw_frame_table = NULL;
    vmd->frame_table = NULL;
    sound_buffers = AV_RL16(&vmd->vmd_header[808]);
    raw_frame_table_size = vmd->frame_count * 6;
    if(vmd->frame_count * vmd->frames_per_block >= UINT_MAX / sizeof(vmd_frame) - sound_buffers){
        av_log(s, AV_LOG_ERROR, "vmd->frame_count * vmd->frames_per_block too large\n");
        return -1;
    }
    raw_frame_table = av_malloc(raw_frame_table_size);
    vmd->frame_table = av_malloc((vmd->frame_count * vmd->frames_per_block + sound_buffers) * sizeof(vmd_frame));
    if (!raw_frame_table || !vmd->frame_table) {
        ret = AVERROR(ENOMEM);
        goto error;
    }
    if (avio_read(pb, raw_frame_table, raw_frame_table_size) !=
        raw_frame_table_size) {
        ret = AVERROR(EIO);
        goto error;
    }

    total_frames = 0;
    for (i = 0; i < vmd->frame_count; i++) {

        current_offset = AV_RL32(&raw_frame_table[6 * i + 2]);

        /* handle each entry in index block */
        for (j = 0; j < vmd->frames_per_block; j++) {
            int type;
            uint32_t size;

            if ((ret = avio_read(pb, chunk, BYTES_PER_FRAME_RECORD)) != BYTES_PER_FRAME_RECORD) {
                av_log(s, AV_LOG_ERROR, "Failed to read frame record\n");
                if (ret >= 0)
                    ret = AVERROR_INVALIDDATA;
                goto error;
            }
            type = chunk[0];
            size = AV_RL32(&chunk[2]);
            if (size > INT_MAX / 2) {
                av_log(s, AV_LOG_ERROR, "Invalid frame size\n");
                ret = AVERROR_INVALIDDATA;
                goto error;
            }
            if(!size && type != 1)
                continue;
            switch(type) {
            case 1: /* Audio Chunk */
                if (!st) break;
                /* first audio chunk contains several audio buffers */
                vmd->frame_table[total_frames].frame_offset = current_offset;
                vmd->frame_table[total_frames].stream_index = vmd->audio_stream_index;
                vmd->frame_table[total_frames].frame_size = size;
                memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
                vmd->frame_table[total_frames].pts = current_audio_pts;
                total_frames++;
                if(!current_audio_pts)
                    current_audio_pts += sound_buffers - 1;
                else
                    current_audio_pts++;
                break;
            case 2: /* Video Chunk */
                vmd->frame_table[total_frames].frame_offset = current_offset;
                vmd->frame_table[total_frames].stream_index = vmd->video_stream_index;
                vmd->frame_table[total_frames].frame_size = size;
                memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
                vmd->frame_table[total_frames].pts = i;
                total_frames++;
                break;
            }
            current_offset += size;
        }
    }

    av_free(raw_frame_table);

    vmd->current_frame = 0;
    vmd->frame_count = total_frames;

    return 0;

error:
    av_freep(&raw_frame_table);
    av_freep(&vmd->frame_table);
    return ret;
}

static int vmd_read_packet(AVFormatContext *s,
                           AVPacket *pkt)
{
    VmdDemuxContext *vmd = s->priv_data;
    AVIOContext *pb = s->pb;
    int ret = 0;
    vmd_frame *frame;

    if (vmd->current_frame >= vmd->frame_count)
        return AVERROR_EOF;

    frame = &vmd->frame_table[vmd->current_frame];
    /* position the stream (will probably be there already) */
    avio_seek(pb, frame->frame_offset, SEEK_SET);

    if(ffio_limit(pb, frame->frame_size) != frame->frame_size)
        return AVERROR(EIO);
    if (av_new_packet(pkt, frame->frame_size + BYTES_PER_FRAME_RECORD))
        return AVERROR(ENOMEM);
    pkt->pos= avio_tell(pb);
    memcpy(pkt->data, frame->frame_record, BYTES_PER_FRAME_RECORD);
    if(vmd->is_indeo3 && frame->frame_record[0] == 0x02)
        ret = avio_read(pb, pkt->data, frame->frame_size);
    else
        ret = avio_read(pb, pkt->data + BYTES_PER_FRAME_RECORD,
            frame->frame_size);

    if (ret != frame->frame_size) {
        av_free_packet(pkt);
        ret = AVERROR(EIO);
    }
    pkt->stream_index = frame->stream_index;
    pkt->pts = frame->pts;
    av_log(s, AV_LOG_DEBUG, " dispatching %s frame with %d bytes and pts %"PRId64"\n",
            (frame->frame_record[0] == 0x02) ? "video" : "audio",
            frame->frame_size + BYTES_PER_FRAME_RECORD,
            pkt->pts);

    vmd->current_frame++;

    return ret;
}

static int vmd_read_close(AVFormatContext *s)
{
    VmdDemuxContext *vmd = s->priv_data;

    av_freep(&vmd->frame_table);

    return 0;
}

AVInputFormat ff_vmd_demuxer = {
    .name           = "vmd",
    .long_name      = NULL_IF_CONFIG_SMALL("Sierra VMD"),
    .priv_data_size = sizeof(VmdDemuxContext),
    .read_probe     = vmd_probe,
    .read_header    = vmd_read_header,
    .read_packet    = vmd_read_packet,
    .read_close     = vmd_read_close,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Sierra VMD Format Demuxer
	3	* Copyright (c) 2004 The FFmpeg Project
	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	* Sierra VMD file demuxer
	25	* by Vladimir "VAG" Gneushev (vagsoft at mail.ru)
	26	* for more information on the Sierra VMD file format, visit:
	27	* http://www.pcisys.net/~melanson/codecs/
	28	*/
	29
	30	#include "libavutil/channel_layout.h"
	31	#include "libavutil/intreadwrite.h"
	32	#include "avformat.h"
	33	#include "internal.h"
	34	#include "avio_internal.h"
	35
	36	#define VMD_HEADER_SIZE 0x0330
	37	#define BYTES_PER_FRAME_RECORD 16
	38
	39	typedef struct {
	40	int stream_index;
	41	int64_t frame_offset;
	42	unsigned int frame_size;
	43	int64_t pts;
	44	int keyframe;
	45	unsigned char frame_record[BYTES_PER_FRAME_RECORD];
	46	} vmd_frame;
	47
	48	typedef struct VmdDemuxContext {
	49	int video_stream_index;
	50	int audio_stream_index;
	51
	52	unsigned int frame_count;
	53	unsigned int frames_per_block;
	54	vmd_frame *frame_table;
	55	unsigned int current_frame;
	56	int is_indeo3;
	57
	58	int sample_rate;
	59	int64_t audio_sample_counter;
	60	int skiphdr;
	61
	62	unsigned char vmd_header[VMD_HEADER_SIZE];
	63	} VmdDemuxContext;
	64
65	static int vmd_probe(AVProbeData *p)
66	{
67	int w, h, sample_rate;
68	if (p->buf_size < 806)
69	return 0;
70	/* check if the first 2 bytes of the file contain the appropriate size
71	* of a VMD header chunk */
72	if (AV_RL16(&p->buf[0]) != VMD_HEADER_SIZE - 2)
73	return 0;
74	w = AV_RL16(&p->buf[12]);
75	h = AV_RL16(&p->buf[14]);
76	sample_rate = AV_RL16(&p->buf[804]);
77	if ((!w \|\| w > 2048 \|\| !h \|\| h > 2048) &&
78	sample_rate != 22050)
79	return 0;
80
81	/* only return half certainty since this check is a bit sketchy */
82	return AVPROBE_SCORE_EXTENSION;
83	}
84
85	static int vmd_read_header(AVFormatContext *s)
86	{
87	VmdDemuxContext *vmd = s->priv_data;
88	AVIOContext *pb = s->pb;
89	AVStream st = NULL, vst = NULL;
90	unsigned int toc_offset;
91	unsigned char *raw_frame_table;
92	int raw_frame_table_size;
93	int64_t current_offset;
94	int i, j, ret;
95	int width, height;
96	unsigned int total_frames;
97	int64_t current_audio_pts = 0;
98	unsigned char chunk[BYTES_PER_FRAME_RECORD];
99	int num, den;
100	int sound_buffers;
101
102	/* fetch the main header, including the 2 header length bytes */
103	avio_seek(pb, 0, SEEK_SET);
104	if (avio_read(pb, vmd->vmd_header, VMD_HEADER_SIZE) != VMD_HEADER_SIZE)
105	return AVERROR(EIO);
106
107	width = AV_RL16(&vmd->vmd_header[12]);
108	height = AV_RL16(&vmd->vmd_header[14]);
109	if (width && height) {
110	if(vmd->vmd_header[24] == 'i' && vmd->vmd_header[25] == 'v' && vmd->vmd_header[26] == '3') {
111	vmd->is_indeo3 = 1;
112	} else {
113	vmd->is_indeo3 = 0;
114	}
115	/* start up the decoders */
116	vst = avformat_new_stream(s, NULL);
117	if (!vst)
118	return AVERROR(ENOMEM);
119	avpriv_set_pts_info(vst, 33, 1, 10);
120	vmd->video_stream_index = vst->index;
121	vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
122	vst->codec->codec_id = vmd->is_indeo3 ? AV_CODEC_ID_INDEO3 : AV_CODEC_ID_VMDVIDEO;
123	vst->codec->codec_tag = 0; /* no fourcc */
124	vst->codec->width = width;
125	vst->codec->height = height;
126	if(vmd->is_indeo3 && vst->codec->width > 320){
127	vst->codec->width >>= 1;
128	vst->codec->height >>= 1;
129	}
130	if (ff_alloc_extradata(vst->codec, VMD_HEADER_SIZE))
131	return AVERROR(ENOMEM);
132	memcpy(vst->codec->extradata, vmd->vmd_header, VMD_HEADER_SIZE);
133	}
134
135	/* if sample rate is 0, assume no audio */
136	vmd->sample_rate = AV_RL16(&vmd->vmd_header[804]);
137	if (vmd->sample_rate) {
138	st = avformat_new_stream(s, NULL);
139	if (!st)
140	return AVERROR(ENOMEM);
141	vmd->audio_stream_index = st->index;
142	st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
143	st->codec->codec_id = AV_CODEC_ID_VMDAUDIO;
144	st->codec->codec_tag = 0; /* no fourcc */
145	if (vmd->vmd_header[811] & 0x80) {
146	st->codec->channels = 2;
147	st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
148	} else {
149	st->codec->channels = 1;
150	st->codec->channel_layout = AV_CH_LAYOUT_MONO;
151	}
152	st->codec->sample_rate = vmd->sample_rate;
153	st->codec->block_align = AV_RL16(&vmd->vmd_header[806]);
154	if (st->codec->block_align & 0x8000) {
155	st->codec->bits_per_coded_sample = 16;
156	st->codec->block_align = -(st->codec->block_align - 0x10000);
157	} else {
158	st->codec->bits_per_coded_sample = 8;
159	}
160	st->codec->bit_rate = st->codec->sample_rate *
161	st->codec->bits_per_coded_sample * st->codec->channels;
162
163	/* calculate pts */
164	num = st->codec->block_align;
165	den = st->codec->sample_rate * st->codec->channels;
166	av_reduce(&num, &den, num, den, (1UL<<31)-1);
167	if (vst)
168	avpriv_set_pts_info(vst, 33, num, den);
169	avpriv_set_pts_info(st, 33, num, den);
170	}
171
172	toc_offset = AV_RL32(&vmd->vmd_header[812]);
173	vmd->frame_count = AV_RL16(&vmd->vmd_header[6]);
174	vmd->frames_per_block = AV_RL16(&vmd->vmd_header[18]);
175	avio_seek(pb, toc_offset, SEEK_SET);
176
177	raw_frame_table = NULL;
178	vmd->frame_table = NULL;
179	sound_buffers = AV_RL16(&vmd->vmd_header[808]);
180	raw_frame_table_size = vmd->frame_count * 6;
181	if(vmd->frame_count * vmd->frames_per_block >= UINT_MAX / sizeof(vmd_frame) - sound_buffers){
182	av_log(s, AV_LOG_ERROR, "vmd->frame_count * vmd->frames_per_block too large\n");
183	return -1;
184	}
185	raw_frame_table = av_malloc(raw_frame_table_size);
186	vmd->frame_table = av_malloc((vmd->frame_count * vmd->frames_per_block + sound_buffers) * sizeof(vmd_frame));
187	if (!raw_frame_table \|\| !vmd->frame_table) {
188	ret = AVERROR(ENOMEM);
189	goto error;
190	}
191	if (avio_read(pb, raw_frame_table, raw_frame_table_size) !=
192	raw_frame_table_size) {
193	ret = AVERROR(EIO);
194	goto error;
195	}
196
197	total_frames = 0;
198	for (i = 0; i < vmd->frame_count; i++) {
199
200	current_offset = AV_RL32(&raw_frame_table[6 * i + 2]);
201
202	/* handle each entry in index block */
203	for (j = 0; j < vmd->frames_per_block; j++) {
204	int type;
205	uint32_t size;
206
207	if ((ret = avio_read(pb, chunk, BYTES_PER_FRAME_RECORD)) != BYTES_PER_FRAME_RECORD) {
208	av_log(s, AV_LOG_ERROR, "Failed to read frame record\n");
209	if (ret >= 0)
210	ret = AVERROR_INVALIDDATA;
211	goto error;
212	}
213	type = chunk[0];
214	size = AV_RL32(&chunk[2]);
215	if (size > INT_MAX / 2) {
216	av_log(s, AV_LOG_ERROR, "Invalid frame size\n");
217	ret = AVERROR_INVALIDDATA;
218	goto error;
219	}
220	if(!size && type != 1)
221	continue;
222	switch(type) {
223	case 1: /* Audio Chunk */
224	if (!st) break;
225	/* first audio chunk contains several audio buffers */
226	vmd->frame_table[total_frames].frame_offset = current_offset;
227	vmd->frame_table[total_frames].stream_index = vmd->audio_stream_index;
228	vmd->frame_table[total_frames].frame_size = size;
229	memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
230	vmd->frame_table[total_frames].pts = current_audio_pts;
231	total_frames++;
232	if(!current_audio_pts)
233	current_audio_pts += sound_buffers - 1;
234	else
235	current_audio_pts++;
236	break;
237	case 2: /* Video Chunk */
238	vmd->frame_table[total_frames].frame_offset = current_offset;
239	vmd->frame_table[total_frames].stream_index = vmd->video_stream_index;
240	vmd->frame_table[total_frames].frame_size = size;
241	memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
242	vmd->frame_table[total_frames].pts = i;
243	total_frames++;
244	break;
245	}
246	current_offset += size;
247	}
248	}
249
250	av_free(raw_frame_table);
251
252	vmd->current_frame = 0;
253	vmd->frame_count = total_frames;
254
255	return 0;
256
257	error:
258	av_freep(&raw_frame_table);
259	av_freep(&vmd->frame_table);
260	return ret;
261	}
262
263	static int vmd_read_packet(AVFormatContext *s,
264	AVPacket *pkt)
265	{
266	VmdDemuxContext *vmd = s->priv_data;
267	AVIOContext *pb = s->pb;
268	int ret = 0;
269	vmd_frame *frame;
270
271	if (vmd->current_frame >= vmd->frame_count)
272	return AVERROR_EOF;
273
274	frame = &vmd->frame_table[vmd->current_frame];
275	/* position the stream (will probably be there already) */
276	avio_seek(pb, frame->frame_offset, SEEK_SET);
277
278	if(ffio_limit(pb, frame->frame_size) != frame->frame_size)
279	return AVERROR(EIO);
280	if (av_new_packet(pkt, frame->frame_size + BYTES_PER_FRAME_RECORD))
281	return AVERROR(ENOMEM);
282	pkt->pos= avio_tell(pb);
283	memcpy(pkt->data, frame->frame_record, BYTES_PER_FRAME_RECORD);
284	if(vmd->is_indeo3 && frame->frame_record[0] == 0x02)
285	ret = avio_read(pb, pkt->data, frame->frame_size);
286	else
287	ret = avio_read(pb, pkt->data + BYTES_PER_FRAME_RECORD,
288	frame->frame_size);
289
290	if (ret != frame->frame_size) {
291	av_free_packet(pkt);
292	ret = AVERROR(EIO);
293	}
294	pkt->stream_index = frame->stream_index;
295	pkt->pts = frame->pts;
296	av_log(s, AV_LOG_DEBUG, " dispatching %s frame with %d bytes and pts %"PRId64"\n",
297	(frame->frame_record[0] == 0x02) ? "video" : "audio",
298	frame->frame_size + BYTES_PER_FRAME_RECORD,
299	pkt->pts);
300
301	vmd->current_frame++;
302
303	return ret;
304	}
305
306	static int vmd_read_close(AVFormatContext *s)
307	{
308	VmdDemuxContext *vmd = s->priv_data;
309
310	av_freep(&vmd->frame_table);
311
312	return 0;
313	}
314
315	AVInputFormat ff_vmd_demuxer = {
316	.name = "vmd",
317	.long_name = NULL_IF_CONFIG_SMALL("Sierra VMD"),
318	.priv_data_size = sizeof(VmdDemuxContext),
319	.read_probe = vmd_probe,
320	.read_header = vmd_read_header,
321	.read_packet = vmd_read_packet,
322	.read_close = vmd_read_close,
323	};