/*
* "Real" compatible demuxer.
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/avstring.h"
+#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "rm.h"
-#include "avstring.h"
+
+struct RMStream {
+ AVPacket pkt; ///< place to store merged video frame / reordered audio data
+ int videobufsize; ///< current assembled frame size
+ int videobufpos; ///< position for the next slice in the video buffer
+ int curpic_num; ///< picture number of current frame
+ int cur_slice, slices;
+ int64_t pktpos; ///< first slice position in file
+ /// Audio descrambling matrix parameters
+ int64_t audiotimestamp; ///< Audio packet timestamp
+ int sub_packet_cnt; // Subpacket counter, used while reading
+ int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
+ int audio_framesize; /// Audio frame size from container
+ int sub_packet_lengths[16]; /// Length of each subpacket
+};
+
+typedef struct {
+ int nb_packets;
+ int old_format;
+ int current_stream;
+ int remaining_len;
+ int audio_stream_num; ///< Stream number for audio packets
+ int audio_pkt_cnt; ///< Output packet counter
+} RMDemuxContext;
+
+static const unsigned char sipr_swaps[38][2] = {
+ { 0, 63 }, { 1, 22 }, { 2, 44 }, { 3, 90 },
+ { 5, 81 }, { 7, 31 }, { 8, 86 }, { 9, 58 },
+ { 10, 36 }, { 12, 68 }, { 13, 39 }, { 14, 73 },
+ { 15, 53 }, { 16, 69 }, { 17, 57 }, { 19, 88 },
+ { 20, 34 }, { 21, 71 }, { 24, 46 }, { 25, 94 },
+ { 26, 54 }, { 28, 75 }, { 29, 50 }, { 32, 70 },
+ { 33, 92 }, { 35, 74 }, { 38, 85 }, { 40, 56 },
+ { 42, 87 }, { 43, 65 }, { 45, 59 }, { 48, 79 },
+ { 49, 93 }, { 51, 89 }, { 55, 95 }, { 61, 76 },
+ { 67, 83 }, { 77, 80 }
+};
+
+static const unsigned char sipr_subpk_size[4] = { 29, 19, 37, 20 };
static inline void get_strl(ByteIOContext *pb, char *buf, int buf_size, int len)
{
if (buf_size > 0) *q = '\0';
}
-static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
+static void get_str8(ByteIOContext *pb, char *buf, int buf_size)
{
- get_strl(pb, buf, buf_size, get_be16(pb));
+ get_strl(pb, buf, buf_size, get_byte(pb));
}
-static void get_str8(ByteIOContext *pb, char *buf, int buf_size)
+static void rm_read_metadata(AVFormatContext *s, int wide)
{
- get_strl(pb, buf, buf_size, get_byte(pb));
+ char buf[1024];
+ int i;
+ for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
+ int len = wide ? get_be16(s->pb) : get_byte(s->pb);
+ get_strl(s->pb, buf, sizeof(buf), len);
+ av_metadata_set(&s->metadata, ff_rm_metadata[i], buf);
+ }
+}
+
+RMStream *ff_rm_alloc_rmstream (void)
+{
+ RMStream *rms = av_mallocz(sizeof(RMStream));
+ rms->curpic_num = -1;
+ return rms;
+}
+
+void ff_rm_free_rmstream (RMStream *rms)
+{
+ av_free_packet(&rms->pkt);
}
-static int rm_read_audio_stream_info(AVFormatContext *s, AVStream *st,
- int read_all)
+static int rm_read_audio_stream_info(AVFormatContext *s, ByteIOContext *pb,
+ AVStream *st, RMStream *ast, int read_all)
{
- RMContext *rm = s->priv_data;
- ByteIOContext *pb = &s->pb;
char buf[256];
uint32_t version;
- int i;
/* ra type header */
version = get_be32(pb); /* version */
if (((version >> 16) & 0xff) == 3) {
int64_t startpos = url_ftell(pb);
- /* very old version */
- for(i = 0; i < 14; i++)
- get_byte(pb);
- get_str8(pb, s->title, sizeof(s->title));
- get_str8(pb, s->author, sizeof(s->author));
- get_str8(pb, s->copyright, sizeof(s->copyright));
- get_str8(pb, s->comment, sizeof(s->comment));
+ url_fskip(pb, 14);
+ rm_read_metadata(s, 0);
if ((startpos + (version & 0xffff)) >= url_ftell(pb) + 2) {
- // fourcc (should always be "lpcJ")
- get_byte(pb);
- get_str8(pb, buf, sizeof(buf));
+ // fourcc (should always be "lpcJ")
+ get_byte(pb);
+ get_str8(pb, buf, sizeof(buf));
}
// Skip extra header crap (this should never happen)
if ((startpos + (version & 0xffff)) > url_ftell(pb))
get_be16(pb); /* version2 */
get_be32(pb); /* header size */
flavor= get_be16(pb); /* add codec info / flavor */
- rm->coded_framesize = coded_framesize = get_be32(pb); /* coded frame size */
+ ast->coded_framesize = coded_framesize = get_be32(pb); /* coded frame size */
get_be32(pb); /* ??? */
get_be32(pb); /* ??? */
get_be32(pb); /* ??? */
- rm->sub_packet_h = sub_packet_h = get_be16(pb); /* 1 */
+ ast->sub_packet_h = sub_packet_h = get_be16(pb); /* 1 */
st->codec->block_align= get_be16(pb); /* frame size */
- rm->sub_packet_size = sub_packet_size = get_be16(pb); /* sub packet size */
+ ast->sub_packet_size = sub_packet_size = get_be16(pb); /* sub packet size */
get_be16(pb); /* ??? */
if (((version >> 16) & 0xff) == 5) {
- get_be16(pb); get_be16(pb); get_be16(pb); }
+ get_be16(pb); get_be16(pb); get_be16(pb);
+ }
st->codec->sample_rate = get_be16(pb);
get_be32(pb);
st->codec->channels = get_be16(pb);
if (((version >> 16) & 0xff) == 5) {
get_be32(pb);
- buf[0] = get_byte(pb);
- buf[1] = get_byte(pb);
- buf[2] = get_byte(pb);
- buf[3] = get_byte(pb);
+ get_buffer(pb, buf, 4);
buf[4] = 0;
} else {
get_str8(pb, buf, sizeof(buf)); /* desc */
} else if (!strcmp(buf, "28_8")) {
st->codec->codec_id = CODEC_ID_RA_288;
st->codec->extradata_size= 0;
- rm->audio_framesize = st->codec->block_align;
+ ast->audio_framesize = st->codec->block_align;
st->codec->block_align = coded_framesize;
- if(rm->audio_framesize >= UINT_MAX / sub_packet_h){
- av_log(s, AV_LOG_ERROR, "rm->audio_framesize * sub_packet_h too large\n");
+ if(ast->audio_framesize >= UINT_MAX / sub_packet_h){
+ av_log(s, AV_LOG_ERROR, "ast->audio_framesize * sub_packet_h too large\n");
return -1;
}
- rm->audiobuf = av_malloc(rm->audio_framesize * sub_packet_h);
- } else if ((!strcmp(buf, "cook")) || (!strcmp(buf, "atrc"))) {
- int codecdata_length, i;
+ av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h);
+ } else if ((!strcmp(buf, "cook")) || (!strcmp(buf, "atrc")) || (!strcmp(buf, "sipr"))) {
+ int codecdata_length;
get_be16(pb); get_byte(pb);
if (((version >> 16) & 0xff) == 5)
get_byte(pb);
}
if (!strcmp(buf, "cook")) st->codec->codec_id = CODEC_ID_COOK;
+ else if (!strcmp(buf, "sipr")) st->codec->codec_id = CODEC_ID_SIPR;
else st->codec->codec_id = CODEC_ID_ATRAC3;
+
+ ast->audio_framesize = st->codec->block_align;
+ if (st->codec->codec_id == CODEC_ID_SIPR) {
+ if (flavor > 3) {
+ av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
+ flavor);
+ return -1;
+ }
+ st->codec->block_align = sipr_subpk_size[flavor];
+ } else {
+ if(sub_packet_size <= 0){
+ av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
+ return -1;
+ }
+ st->codec->block_align = ast->sub_packet_size;
+ }
st->codec->extradata_size= codecdata_length;
st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- for(i = 0; i < codecdata_length; i++)
- ((uint8_t*)st->codec->extradata)[i] = get_byte(pb);
- rm->audio_framesize = st->codec->block_align;
- st->codec->block_align = rm->sub_packet_size;
+ get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
- if(rm->audio_framesize >= UINT_MAX / sub_packet_h){
+ if(ast->audio_framesize >= UINT_MAX / sub_packet_h){
av_log(s, AV_LOG_ERROR, "rm->audio_framesize * sub_packet_h too large\n");
return -1;
}
- rm->audiobuf = av_malloc(rm->audio_framesize * sub_packet_h);
+ av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h);
} else if (!strcmp(buf, "raac") || !strcmp(buf, "racp")) {
- int codecdata_length, i;
+ int codecdata_length;
get_be16(pb); get_byte(pb);
if (((version >> 16) & 0xff) == 5)
get_byte(pb);
st->codec->extradata_size = codecdata_length - 1;
st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
get_byte(pb);
- for(i = 0; i < st->codec->extradata_size; i++)
- ((uint8_t*)st->codec->extradata)[i] = get_byte(pb);
+ get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
}
} else {
st->codec->codec_id = CODEC_ID_NONE;
get_byte(pb);
get_byte(pb);
get_byte(pb);
-
- get_str8(pb, s->title, sizeof(s->title));
- get_str8(pb, s->author, sizeof(s->author));
- get_str8(pb, s->copyright, sizeof(s->copyright));
- get_str8(pb, s->comment, sizeof(s->comment));
+ rm_read_metadata(s, 0);
}
}
return 0;
}
-static int
-ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVStream *st)
+int
+ff_rm_read_mdpr_codecdata (AVFormatContext *s, ByteIOContext *pb,
+ AVStream *st, RMStream *rst, int codec_data_size)
{
- ByteIOContext *pb = &s->pb;
unsigned int v;
- int codec_data_size, size;
+ int size;
int64_t codec_pos;
- codec_data_size = get_be32(pb);
+ av_set_pts_info(st, 64, 1, 1000);
codec_pos = url_ftell(pb);
v = get_be32(pb);
if (v == MKTAG(0xfd, 'a', 'r', '.')) {
/* ra type header */
- if (rm_read_audio_stream_info(s, st, 0))
+ if (rm_read_audio_stream_info(s, pb, st, rst, 0))
return -1;
} else {
int fps, fps2;
goto skip;
}
st->codec->codec_tag = get_le32(pb);
-// av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
+// av_log(s, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
if ( st->codec->codec_tag != MKTAG('R', 'V', '1', '0')
&& st->codec->codec_tag != MKTAG('R', 'V', '2', '0')
&& st->codec->codec_tag != MKTAG('R', 'V', '3', '0')
- && st->codec->codec_tag != MKTAG('R', 'V', '4', '0'))
+ && st->codec->codec_tag != MKTAG('R', 'V', '4', '0')
+ && st->codec->codec_tag != MKTAG('R', 'V', 'T', 'R'))
goto fail1;
st->codec->width = get_be16(pb);
st->codec->height = get_be16(pb);
return -1;
}
st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
-// av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2);
+// av_log(s, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2);
st->codec->time_base.den = fps * st->codec->time_base.num;
switch(((uint8_t*)st->codec->extradata)[4]>>4){
case 1: st->codec->codec_id = CODEC_ID_RV10; break;
return 0;
}
+/** this function assumes that the demuxer has already seeked to the start
+ * of the INDX chunk, and will bail out if not. */
+static int rm_read_index(AVFormatContext *s)
+{
+ ByteIOContext *pb = s->pb;
+ unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
+ AVStream *st;
+
+ do {
+ if (get_le32(pb) != MKTAG('I','N','D','X'))
+ return -1;
+ size = get_be32(pb);
+ if (size < 20)
+ return -1;
+ url_fskip(pb, 2);
+ n_pkts = get_be32(pb);
+ str_id = get_be16(pb);
+ next_off = get_be32(pb);
+ for (n = 0; n < s->nb_streams; n++)
+ if (s->streams[n]->id == str_id) {
+ st = s->streams[n];
+ break;
+ }
+ if (n == s->nb_streams)
+ goto skip;
+
+ for (n = 0; n < n_pkts; n++) {
+ url_fskip(pb, 2);
+ pts = get_be32(pb);
+ pos = get_be32(pb);
+ url_fskip(pb, 4); /* packet no. */
+
+ av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
+ }
+
+skip:
+ if (next_off && url_ftell(pb) != next_off &&
+ url_fseek(pb, next_off, SEEK_SET) < 0)
+ return -1;
+ } while (next_off);
+
+ return 0;
+}
static int rm_read_header_old(AVFormatContext *s, AVFormatParameters *ap)
{
- RMContext *rm = s->priv_data;
+ RMDemuxContext *rm = s->priv_data;
AVStream *st;
rm->old_format = 1;
st = av_new_stream(s, 0);
if (!st)
return -1;
- return rm_read_audio_stream_info(s, st, 1);
+ st->priv_data = ff_rm_alloc_rmstream();
+ return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
}
static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
- RMContext *rm = s->priv_data;
+ RMDemuxContext *rm = s->priv_data;
AVStream *st;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
unsigned int tag;
- int tag_size, i;
+ int tag_size;
unsigned int start_time, duration;
+ unsigned int data_off = 0, indx_off = 0;
char buf[128];
int flags = 0;
for(;;) {
if (url_feof(pb))
- goto fail;
+ return -1;
tag = get_le32(pb);
tag_size = get_be32(pb);
get_be16(pb);
tag_size);
#endif
if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
- goto fail;
+ return -1;
switch(tag) {
case MKTAG('P', 'R', 'O', 'P'):
/* file header */
get_be32(pb); /* nb packets */
get_be32(pb); /* duration */
get_be32(pb); /* preroll */
- get_be32(pb); /* index offset */
- get_be32(pb); /* data offset */
+ indx_off = get_be32(pb); /* index offset */
+ data_off = get_be32(pb); /* data offset */
get_be16(pb); /* nb streams */
flags = get_be16(pb); /* flags */
break;
case MKTAG('C', 'O', 'N', 'T'):
- get_str16(pb, s->title, sizeof(s->title));
- get_str16(pb, s->author, sizeof(s->author));
- get_str16(pb, s->copyright, sizeof(s->copyright));
- get_str16(pb, s->comment, sizeof(s->comment));
+ rm_read_metadata(s, 1);
break;
case MKTAG('M', 'D', 'P', 'R'):
st = av_new_stream(s, 0);
if (!st)
- goto fail;
+ return AVERROR(ENOMEM);
st->id = get_be16(pb);
get_be32(pb); /* max bit rate */
st->codec->bit_rate = get_be32(pb); /* bit rate */
get_str8(pb, buf, sizeof(buf)); /* desc */
get_str8(pb, buf, sizeof(buf)); /* mimetype */
st->codec->codec_type = CODEC_TYPE_DATA;
- av_set_pts_info(st, 64, 1, 1000);
- if (ff_rm_read_mdpr_codecdata(s, st) < 0)
+ st->priv_data = ff_rm_alloc_rmstream();
+ if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
+ get_be32(pb)) < 0)
return -1;
break;
case MKTAG('D', 'A', 'T', 'A'):
if (!rm->nb_packets && (flags & 4))
rm->nb_packets = 3600 * 25;
get_be32(pb); /* next data header */
- rm->curpic_num = -1;
- return 0;
- fail:
- for(i=0;i<s->nb_streams;i++) {
- av_free(s->streams[i]);
+ if (!data_off)
+ data_off = url_ftell(pb) - 18;
+ if (indx_off && url_fseek(pb, indx_off, SEEK_SET) >= 0) {
+ rm_read_index(s);
+ url_fseek(pb, data_off + 18, SEEK_SET);
}
- return AVERROR(EIO);
+
+ return 0;
}
static int get_num(ByteIOContext *pb, int *len)
n = get_be16(pb);
(*len)-=2;
-// n &= 0x7FFF;
+ n &= 0x7FFF;
if (n >= 0x4000) {
return n - 0x4000;
} else {
#define RAW_PACKET_SIZE 1000
static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
- RMContext *rm = s->priv_data;
- ByteIOContext *pb = &s->pb;
- int len, num, res, i;
+ RMDemuxContext *rm = s->priv_data;
+ ByteIOContext *pb = s->pb;
AVStream *st;
uint32_t state=0xFFFFFFFF;
while(!url_feof(pb)){
- *pos= url_ftell(pb);
+ int len, num, res, i;
+ *pos= url_ftell(pb) - 3;
if(rm->remaining_len > 0){
num= rm->current_stream;
len= rm->remaining_len;
state= (state<<8) + get_byte(pb);
if(state == MKBETAG('I', 'N', 'D', 'X')){
- len = get_be16(pb) - 6;
+ int n_pkts, expected_len;
+ len = get_be32(pb);
+ url_fskip(pb, 2);
+ n_pkts = get_be32(pb);
+ expected_len = 20 + n_pkts * 14;
+ if (len == 20)
+ /* some files don't add index entries to chunk size... */
+ len = expected_len;
+ else if (len != expected_len)
+ av_log(s, AV_LOG_WARNING,
+ "Index size %d (%d pkts) is wrong, should be %d.\n",
+ len, n_pkts, expected_len);
+ len -= 14; // we already read part of the index header
if(len<0)
continue;
goto skip;
}
- if(state > (unsigned)0xFFFF || state < 12)
+ if(state > (unsigned)0xFFFF || state <= 12)
continue;
- len=state;
+ len=state - 12;
state= 0xFFFFFFFF;
num = get_be16(pb);
*timestamp = get_be32(pb);
res= get_byte(pb); /* reserved */
*flags = get_byte(pb); /* flags */
-
-
- len -= 12;
}
for(i=0;i<s->nb_streams;i++) {
st = s->streams[i];
skip:
/* skip packet if unknown number */
url_fskip(pb, len);
- rm->remaining_len -= len;
+ rm->remaining_len = 0;
continue;
}
*stream_index= i;
return -1;
}
-static int rm_assemble_video_frame(AVFormatContext *s, RMContext *rm, AVPacket *pkt, int len)
+static int rm_assemble_video_frame(AVFormatContext *s, ByteIOContext *pb,
+ RMDemuxContext *rm, RMStream *vst,
+ AVPacket *pkt, int len, int *pseq)
{
- ByteIOContext *pb = &s->pb;
int hdr, seq, pic_num, len2, pos;
int type;
hdr = get_byte(pb); len--;
type = hdr >> 6;
- switch(type){
- case 0: // slice
- case 2: // last slice
+
+ if(type != 3){ // not frame as a part of packet
seq = get_byte(pb); len--;
+ }
+ if(type != 1){ // not whole frame
len2 = get_num(pb, &len);
- pos = get_num(pb, &len);
+ pos = get_num(pb, &len);
pic_num = get_byte(pb); len--;
- rm->remaining_len = len;
- break;
- case 1: //whole frame
- seq = get_byte(pb); len--;
+ }
+ if(len<0)
+ return -1;
+ rm->remaining_len = len;
+ if(type&1){ // frame, not slice
+ if(type == 3) // frame as a part of packet
+ len= len2;
+ if(rm->remaining_len < len)
+ return -1;
+ rm->remaining_len -= len;
if(av_new_packet(pkt, len + 9) < 0)
return AVERROR(EIO);
pkt->data[0] = 0;
AV_WL32(pkt->data + 1, 1);
AV_WL32(pkt->data + 5, 0);
get_buffer(pb, pkt->data + 9, len);
- rm->remaining_len = 0;
- return 0;
- case 3: //frame as a part of packet
- len2 = get_num(pb, &len);
- pos = get_num(pb, &len);
- pic_num = get_byte(pb); len--;
- rm->remaining_len = len - len2;
- if(av_new_packet(pkt, len2 + 9) < 0)
- return AVERROR(EIO);
- pkt->data[0] = 0;
- AV_WL32(pkt->data + 1, 1);
- AV_WL32(pkt->data + 5, 0);
- get_buffer(pb, pkt->data + 9, len2);
return 0;
}
//now we have to deal with single slice
- if((seq & 0x7F) == 1 || rm->curpic_num != pic_num){
- rm->slices = ((hdr & 0x3F) << 1) + 1;
- rm->videobufsize = len2 + 8*rm->slices + 1;
- if(!(rm->videobuf = av_realloc(rm->videobuf, rm->videobufsize)))
+ *pseq = seq;
+ if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
+ vst->slices = ((hdr & 0x3F) << 1) + 1;
+ vst->videobufsize = len2 + 8*vst->slices + 1;
+ av_free_packet(&vst->pkt); //FIXME this should be output.
+ if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
return AVERROR(ENOMEM);
- rm->videobufpos = 8*rm->slices + 1;
- rm->cur_slice = 0;
- rm->curpic_num = pic_num;
- rm->pktpos = url_ftell(pb);
+ vst->videobufpos = 8*vst->slices + 1;
+ vst->cur_slice = 0;
+ vst->curpic_num = pic_num;
+ vst->pktpos = url_ftell(pb);
}
- if(type == 2){
+ if(type == 2)
len = FFMIN(len, pos);
- pos = len2 - pos;
- }
- if(++rm->cur_slice > rm->slices)
+ if(++vst->cur_slice > vst->slices)
return 1;
- AV_WL32(rm->videobuf - 7 + 8*rm->cur_slice, 1);
- AV_WL32(rm->videobuf - 3 + 8*rm->cur_slice, rm->videobufpos - 8*rm->slices - 1);
- if(rm->videobufpos + len > rm->videobufsize)
+ AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
+ AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
+ if(vst->videobufpos + len > vst->videobufsize)
return 1;
- if (get_buffer(pb, rm->videobuf + rm->videobufpos, len) != len)
+ if (get_buffer(pb, vst->pkt.data + vst->videobufpos, len) != len)
return AVERROR(EIO);
- rm->videobufpos += len,
+ vst->videobufpos += len;
rm->remaining_len-= len;
- if(type == 2 || (rm->videobufpos) == rm->videobufsize){
- rm->videobuf[0] = rm->cur_slice-1;
- if(av_new_packet(pkt, rm->videobufpos - 8*(rm->slices - rm->cur_slice)) < 0)
- return AVERROR(ENOMEM);
- memcpy(pkt->data, rm->videobuf, 1 + 8*rm->cur_slice);
- memcpy(pkt->data + 1 + 8*rm->cur_slice, rm->videobuf + 1 + 8*rm->slices, rm->videobufpos - 1 - 8*rm->slices);
- pkt->pts = AV_NOPTS_VALUE;
- pkt->pos = rm->pktpos;
- return 0;
+ if(type == 2 || (vst->videobufpos) == vst->videobufsize){
+ vst->pkt.data[0] = vst->cur_slice-1;
+ *pkt= vst->pkt;
+ vst->pkt.data= NULL;
+ vst->pkt.size= 0;
+ if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
+ memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
+ vst->videobufpos - 1 - 8*vst->slices);
+ pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
+ pkt->pts = AV_NOPTS_VALUE;
+ pkt->pos = vst->pktpos;
+ return 0;
}
return 1;
}
}
-static int
-ff_rm_parse_packet (AVFormatContext *s, AVStream *st, int len, AVPacket *pkt,
+/**
+ * Perform 4-bit block reordering for SIPR data.
+ * @todo This can be optimized, e.g. use memcpy() if data blocks are aligned
+ */
+static void
+rm_reorder_sipr_data (RMStream *ast)
+{
+ int n, bs = ast->sub_packet_h * ast->audio_framesize * 2 / 96; // nibbles per subpacket
+
+ for (n = 0; n < 38; n++) {
+ int j;
+ int i = bs * sipr_swaps[n][0];
+ int o = bs * sipr_swaps[n][1];
+ uint8_t *buf = ast->pkt.data;
+
+ /* swap 4bit-nibbles of block 'i' with 'o' */
+ for (j = 0; j < bs; j++, i++, o++) {
+ int x = (buf[i >> 1] >> (4 * (i & 1))) & 0xF,
+ y = (buf[o >> 1] >> (4 * (o & 1))) & 0xF;
+
+ buf[o >> 1] = (x << (4 * (o & 1))) |
+ (buf[o >> 1] & (0xF << (4 * !(o & 1))));
+ buf[i >> 1] = (y << (4 * (i & 1))) |
+ (buf[i >> 1] & (0xF << (4 * !(i & 1))));
+ }
+ }
+}
+
+int
+ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
+ AVStream *st, RMStream *ast, int len, AVPacket *pkt,
int *seq, int *flags, int64_t *timestamp)
{
- ByteIOContext *pb = &s->pb;
- RMContext *rm = s->priv_data;
+ RMDemuxContext *rm = s->priv_data;
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
rm->current_stream= st->id;
- if(rm_assemble_video_frame(s, rm, pkt, len) == 1)
+ if(rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq))
return -1; //got partial frame
} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
if ((st->codec->codec_id == CODEC_ID_RA_288) ||
(st->codec->codec_id == CODEC_ID_COOK) ||
- (st->codec->codec_id == CODEC_ID_ATRAC3)) {
+ (st->codec->codec_id == CODEC_ID_ATRAC3) ||
+ (st->codec->codec_id == CODEC_ID_SIPR)) {
int x;
- int sps = rm->sub_packet_size;
- int cfs = rm->coded_framesize;
- int h = rm->sub_packet_h;
- int y = rm->sub_packet_cnt;
- int w = rm->audio_framesize;
+ int sps = ast->sub_packet_size;
+ int cfs = ast->coded_framesize;
+ int h = ast->sub_packet_h;
+ int y = ast->sub_packet_cnt;
+ int w = ast->audio_framesize;
if (*flags & 2)
- y = rm->sub_packet_cnt = 0;
+ y = ast->sub_packet_cnt = 0;
if (!y)
- rm->audiotimestamp = *timestamp;
+ ast->audiotimestamp = *timestamp;
switch(st->codec->codec_id) {
case CODEC_ID_RA_288:
for (x = 0; x < h/2; x++)
- get_buffer(pb, rm->audiobuf+x*2*w+y*cfs, cfs);
+ get_buffer(pb, ast->pkt.data+x*2*w+y*cfs, cfs);
break;
case CODEC_ID_ATRAC3:
case CODEC_ID_COOK:
for (x = 0; x < w/sps; x++)
- get_buffer(pb, rm->audiobuf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
+ get_buffer(pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
+ break;
+ case CODEC_ID_SIPR:
+ get_buffer(pb, ast->pkt.data + y * w, w);
break;
}
- if (++(rm->sub_packet_cnt) < h)
+ if (++(ast->sub_packet_cnt) < h)
return -1;
- else {
- rm->sub_packet_cnt = 0;
- rm->audio_stream_num = st->index;
- rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
- // Release first audio packet
- av_new_packet(pkt, st->codec->block_align);
- memcpy(pkt->data, rm->audiobuf, st->codec->block_align);
- *timestamp = rm->audiotimestamp;
- *flags = 2; // Mark first packet as keyframe
- }
+ if (st->codec->codec_id == CODEC_ID_SIPR)
+ rm_reorder_sipr_data(ast);
+
+ ast->sub_packet_cnt = 0;
+ rm->audio_stream_num = st->index;
+ rm->audio_pkt_cnt = h * w / st->codec->block_align;
} else if (st->codec->codec_id == CODEC_ID_AAC) {
int x;
rm->audio_stream_num = st->index;
- rm->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
- if (rm->sub_packet_cnt) {
- for (x = 0; x < rm->sub_packet_cnt; x++)
- rm->sub_packet_lengths[x] = get_be16(pb);
- // Release first audio packet
- rm->audio_pkt_cnt = rm->sub_packet_cnt - 1;
- av_get_packet(pb, pkt, rm->sub_packet_lengths[0]);
- *flags = 2; // Mark first packet as keyframe
- }
- } else
+ ast->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
+ if (ast->sub_packet_cnt) {
+ for (x = 0; x < ast->sub_packet_cnt; x++)
+ ast->sub_packet_lengths[x] = get_be16(pb);
+ rm->audio_pkt_cnt = ast->sub_packet_cnt;
+ ast->audiotimestamp = *timestamp;
+ } else
+ return -1;
+ } else {
av_get_packet(pb, pkt, len);
rm_ac3_swap_bytes(st, pkt);
-
+ }
} else
av_get_packet(pb, pkt, len);
- if( (st->discard >= AVDISCARD_NONKEY && !(*flags&2))
- || st->discard >= AVDISCARD_ALL){
- av_free_packet(pkt);
- return -1;
- }
-
pkt->stream_index = st->index;
#if 0
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
if(st->codec->codec_id == CODEC_ID_RV20){
int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
- av_log(NULL, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
+ av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
seq |= (*timestamp&~0x3FFF);
if(seq - *timestamp > 0x2000) seq -= 0x4000;
if (*flags & 2)
pkt->flags |= PKT_FLAG_KEY;
- return 0;
+ return st->codec->codec_type == CODEC_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
}
-static void
-ff_rm_retrieve_cache (AVFormatContext *s, AVStream *st, AVPacket *pkt)
+int
+ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
+ AVStream *st, RMStream *ast, AVPacket *pkt)
{
- ByteIOContext *pb = &s->pb;
- RMContext *rm = s->priv_data;
+ RMDemuxContext *rm = s->priv_data;
assert (rm->audio_pkt_cnt > 0);
if (st->codec->codec_id == CODEC_ID_AAC)
- av_get_packet(pb, pkt, rm->sub_packet_lengths[rm->sub_packet_cnt - rm->audio_pkt_cnt]);
+ av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
else {
av_new_packet(pkt, st->codec->block_align);
- memcpy(pkt->data, rm->audiobuf + st->codec->block_align *
- (rm->sub_packet_h * rm->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
+ memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
+ (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
st->codec->block_align);
}
rm->audio_pkt_cnt--;
- pkt->flags = 0;
+ if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
+ ast->audiotimestamp = AV_NOPTS_VALUE;
+ pkt->flags = PKT_FLAG_KEY;
+ } else
+ pkt->flags = 0;
pkt->stream_index = st->index;
+
+ return rm->audio_pkt_cnt;
}
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
{
- RMContext *rm = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ RMDemuxContext *rm = s->priv_data;
AVStream *st;
- int i, len;
+ int i, len, res, seq = 1;
int64_t timestamp, pos;
- int flags;
-
- if (rm->audio_pkt_cnt) {
- // If there are queued audio packet return them first
- st = s->streams[rm->audio_stream_num];
- ff_rm_retrieve_cache(s, st, pkt);
- } else if (rm->old_format) {
- st = s->streams[0];
- if (st->codec->codec_id == CODEC_ID_RA_288) {
- int x, y;
-
- for (y = 0; y < rm->sub_packet_h; y++)
- for (x = 0; x < rm->sub_packet_h/2; x++)
- if (get_buffer(pb, rm->audiobuf+x*2*rm->audio_framesize+y*rm->coded_framesize, rm->coded_framesize) <= 0)
- return AVERROR(EIO);
- rm->audio_stream_num = 0;
- rm->audio_pkt_cnt = rm->sub_packet_h * rm->audio_framesize / st->codec->block_align - 1;
- // Release first audio packet
- av_new_packet(pkt, st->codec->block_align);
- memcpy(pkt->data, rm->audiobuf, st->codec->block_align);
- pkt->flags |= PKT_FLAG_KEY; // Mark first packet as keyframe
- pkt->stream_index = 0;
+ int old_flags, flags;
+
+ for (;;) {
+ if (rm->audio_pkt_cnt) {
+ // If there are queued audio packet return them first
+ st = s->streams[rm->audio_stream_num];
+ ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
} else {
- /* just read raw bytes */
- len = RAW_PACKET_SIZE;
- len= av_get_packet(pb, pkt, len);
- pkt->stream_index = 0;
- if (len <= 0) {
- return AVERROR(EIO);
+ if (rm->old_format) {
+ RMStream *ast;
+
+ st = s->streams[0];
+ ast = st->priv_data;
+ timestamp = AV_NOPTS_VALUE;
+ len = !ast->audio_framesize ? RAW_PACKET_SIZE :
+ ast->coded_framesize * ast->sub_packet_h / 2;
+ flags = (seq++ == 1) ? 2 : 0;
+ } else {
+ len=sync(s, ×tamp, &flags, &i, &pos);
+ if (len > 0)
+ st = s->streams[i];
}
- pkt->size = len;
- }
- rm_ac3_swap_bytes(st, pkt);
- } else {
- int seq=1;
-resync:
- len=sync(s, ×tamp, &flags, &i, &pos);
- if(len<0)
- return AVERROR(EIO);
- st = s->streams[i];
- if (ff_rm_parse_packet (s, st, len, pkt, &seq, &flags, ×tamp) < 0)
- goto resync;
+ if(len<0 || url_feof(s->pb))
+ return AVERROR(EIO);
- if(flags&2){
- if((seq&0x7F) == 1)
+ old_flags = flags;
+ res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
+ &seq, &flags, ×tamp);
+ if((old_flags&2) && (seq&0x7F) == 1)
av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
+ if (res)
+ continue;
}
+
+ if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
+ || st->discard >= AVDISCARD_ALL){
+ av_free_packet(pkt);
+ } else
+ break;
}
return 0;
static int rm_read_close(AVFormatContext *s)
{
- RMContext *rm = s->priv_data;
+ int i;
+
+ for (i=0;i<s->nb_streams;i++)
+ ff_rm_free_rmstream(s->streams[i]->priv_data);
- av_free(rm->audiobuf);
- av_free(rm->videobuf);
return 0;
}
static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
int64_t *ppos, int64_t pos_limit)
{
- RMContext *rm = s->priv_data;
+ RMDemuxContext *rm = s->priv_data;
int64_t pos, dts;
int stream_index2, flags, len, h;
if(rm->old_format)
return AV_NOPTS_VALUE;
- url_fseek(&s->pb, pos, SEEK_SET);
+ url_fseek(s->pb, pos, SEEK_SET);
rm->remaining_len=0;
for(;;){
int seq=1;
st = s->streams[stream_index2];
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- h= get_byte(&s->pb); len--;
+ h= get_byte(s->pb); len--;
if(!(h & 0x40)){
- seq = get_byte(&s->pb); len--;
+ seq = get_byte(s->pb); len--;
}
}
break;
}
- url_fskip(&s->pb, len);
+ url_fskip(s->pb, len);
}
*ppos = pos;
return dts;
AVInputFormat rm_demuxer = {
"rm",
- "rm format",
- sizeof(RMContext),
+ NULL_IF_CONFIG_SMALL("RealMedia format"),
+ sizeof(RMDemuxContext),
rm_probe,
rm_read_header,
rm_read_packet,
NULL,
rm_read_dts,
};
+
+AVInputFormat rdt_demuxer = {
+ "rdt",
+ NULL_IF_CONFIG_SMALL("RDT demuxer"),
+ sizeof(RMDemuxContext),
+ NULL,
+ NULL,
+ NULL,
+ rm_read_close,
+};
projects / frescor / ffmpeg.git / blobdiff