* MXF demuxer.
* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
return s->nb_streams == 1 ? 0 : -1;
}
+/* XXX: use AVBitStreamFilter */
+static int mxf_get_d10_aes3_packet(ByteIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
+{
+ uint8_t buffer[61444];
+ uint8_t *buf_ptr, *end_ptr, *data_ptr;
+
+ if (length > 61444) /* worst case PAL 1920 samples 8 channels */
+ return -1;
+ get_buffer(pb, buffer, length);
+ av_new_packet(pkt, length);
+ data_ptr = pkt->data;
+ end_ptr = buffer + length;
+ buf_ptr = buffer + 4; /* skip SMPTE 331M header */
+ for (; buf_ptr < end_ptr; buf_ptr += 4) {
+ if (st->codec->bits_per_sample == 24) {
+ data_ptr[0] = (buf_ptr[2] >> 4) | ((buf_ptr[3] & 0x0f) << 4);
+ data_ptr[1] = (buf_ptr[1] >> 4) | ((buf_ptr[2] & 0x0f) << 4);
+ data_ptr[2] = (buf_ptr[0] >> 4) | ((buf_ptr[1] & 0x0f) << 4);
+ data_ptr += 3;
+ } else {
+ data_ptr[0] = (buf_ptr[2] >> 4) | ((buf_ptr[3] & 0x0f) << 4);
+ data_ptr[1] = (buf_ptr[1] >> 4) | ((buf_ptr[2] & 0x0f) << 4);
+ data_ptr += 2;
+ }
+ }
+ pkt->size = data_ptr - pkt->data;
+ return 0;
+}
+
static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
KLVPacket klv;
PRINT_KEY("read packet", klv.key);
#endif
if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
- av_get_packet(&s->pb, pkt, klv.length);
- pkt->stream_index = mxf_get_stream_index(s, &klv);
- return pkt->stream_index == -1 ? -1 : 0;
+ int index = mxf_get_stream_index(s, &klv);
+ if (index < 0) {
+ av_log(s, AV_LOG_ERROR, "error getting stream index\n");
+ url_fskip(&s->pb, klv.length);
+ return -1;
+ }
+ /* check for 8 channels AES3 element */
+ if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
+ if (mxf_get_d10_aes3_packet(&s->pb, s->streams[index], pkt, klv.length) < 0) {
+ av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
+ return -1;
+ }
+ } else
+ av_get_packet(&s->pb, pkt, klv.length);
+ pkt->stream_index = index;
+ return 0;
} else
url_fskip(&s->pb, klv.length);
}
bytes_read += size + 4;
dprintf("tag 0x%04X, size %d\n", tag, size);
- if (!size) /* ignore empty tag, needed for some files with empty UMID tag */
+ if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
+ av_log(mxf->fc, AV_LOG_ERROR, "local tag 0x%04X with 0 size\n", tag);
continue;
+ }
switch (tag) {
case 0x3C0A:
get_buffer(pb, source_clip->uid, 16);
static const MXFCodecUL mxf_codec_uls[] = {
/* PictureEssenceCoding */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@ML I-Frame */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@HL I-Frame */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@HL Long GoP */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MP@ML Long GoP */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@ML Long GoP */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0xc0 MPA stream id */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x02 }, CODEC_ID_MP2, Clip }, /* MPEG-ES Clip wrapped, 0xc0 MPA stream id */
- //{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, CODEC_ID_PCM_AES3, Frame }, /* D-10 Mapping 30Mbps PAL Extended Template */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 30Mbps PAL Extended Template */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 50Mbps PAL Extended Template */
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame },
};
st->codec->width = descriptor->width;
st->codec->height = descriptor->height;
st->codec->bits_per_sample = descriptor->bits_per_sample; /* Uncompressed */
+ st->need_parsing = 2; /* only parse headers */
} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, &descriptor->essence_container_ul);
if (st->codec->codec_id == CODEC_ID_NONE)
st->codec->codec_id = CODEC_ID_PCM_S24BE;
else if (descriptor->bits_per_sample == 32)
st->codec->codec_id = CODEC_ID_PCM_S32BE;
+ if (descriptor->essence_container_ul[13] == 0x01) /* D-10 Mapping */
+ st->codec->channels = 8; /* force channels to 8 */
+ } else if (st->codec->codec_id == CODEC_ID_MP2) {
+ st->need_parsing = 1;
}
}
if (container_ul && container_ul->wrapping == Clip) {
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL },
};
+static int mxf_read_sync(ByteIOContext *pb, const uint8_t *key, unsigned size)
+{
+ int i, b;
+ for (i = 0; i < size && !url_feof(pb); i++) {
+ b = get_byte(pb);
+ if (b == key[0])
+ i = 0;
+ else if (b != key[i])
+ i = -1;
+ }
+ return i == size;
+}
+
static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
MXFContext *mxf = s->priv_data;
KLVPacket klv;
+ if (!mxf_read_sync(&s->pb, mxf_header_partition_pack_key, 14)) {
+ av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
+ return -1;
+ }
+ url_fseek(&s->pb, -14, SEEK_CUR);
mxf->fc = s;
while (!url_feof(&s->pb)) {
const MXFMetadataReadTableEntry *function;
static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
{
AVStream *st = s->streams[stream_index];
- offset_t pos = url_ftell(&s->pb);
int64_t seconds;
- int i;
- if (!s->bit_rate || sample_time < 0)
+ if (!s->bit_rate)
return -1;
+ if (sample_time < 0)
+ sample_time = 0;
seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
url_fseek(&s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
- /* sync on KLV essence element */
- for (i = 0; i < 12 && url_ftell(&s->pb) < s->file_size; i++) {
- int b = get_byte(&s->pb);
- if (b == mxf_essence_element_key[0])
- i = 0;
- else if (b != mxf_essence_element_key[i])
- i = -1;
- }
- if (i == 12) { /* found KLV key */
- url_fseek(&s->pb, -12, SEEK_CUR);
- av_update_cur_dts(s, st, sample_time);
- return 0;
- }
- url_fseek(&s->pb, pos, SEEK_SET);
- return -1;
+ if (!mxf_read_sync(&s->pb, mxf_essence_element_key, 12))
+ return -1;
+
+ /* found KLV key */
+ url_fseek(&s->pb, -12, SEEK_CUR);
+ av_update_cur_dts(s, st, sample_time);
+ return 0;
}
AVInputFormat mxf_demuxer = {
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