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-rw-r--r--src/demuxers/demux_real.c111
1 files changed, 73 insertions, 38 deletions
diff --git a/src/demuxers/demux_real.c b/src/demuxers/demux_real.c
index 9353c70a6..934c092ce 100644
--- a/src/demuxers/demux_real.c
+++ b/src/demuxers/demux_real.c
@@ -21,7 +21,7 @@
* For more information regarding the Real file format, visit:
* http://www.pcisys.net/~melanson/codecs/
*
- * $Id: demux_real.c,v 1.16 2002/11/25 02:32:48 guenter Exp $
+ * $Id: demux_real.c,v 1.17 2002/11/26 00:37:28 guenter Exp $
*/
#ifdef HAVE_CONFIG_H
@@ -40,7 +40,9 @@
#include "demux.h"
#include "bswap.h"
+/*
#define LOG
+*/
#define FOURCC_TAG( ch0, ch1, ch2, ch3 ) \
( (long)(unsigned char)(ch3) | \
@@ -136,6 +138,7 @@ typedef struct {
} pnm_mdpr_t;
+#ifdef LOG
static void hexdump (char *buf, int length) {
int i;
@@ -166,6 +169,7 @@ static void hexdump (char *buf, int length) {
}
printf ("\n");
}
+#endif
static pnm_mdpr_t *pnm_parse_mdpr(const char *data) {
@@ -202,6 +206,7 @@ static pnm_mdpr_t *pnm_parse_mdpr(const char *data) {
memcpy(mdpr->type_specific_data,
&data[38+mdpr->stream_name_size+mdpr->mime_type_size], mdpr->type_specific_len);
+#ifdef LOG
printf("demux_real: MDPR: stream number: %i\n", mdpr->stream_number);
printf("demux_real: MDPR: maximal bit rate: %i\n", mdpr->max_bit_rate);
printf("demux_real: MDPR: average bit rate: %i\n", mdpr->avg_bit_rate);
@@ -215,6 +220,7 @@ static pnm_mdpr_t *pnm_parse_mdpr(const char *data) {
printf("demux_real: MDPR: type specific data:\n");
hexdump(mdpr->type_specific_data, mdpr->type_specific_len);
printf("\n");
+#endif
return mdpr;
}
@@ -226,42 +232,6 @@ typedef struct dp_hdr_s {
uint32_t chunktab; /* offset to chunk offset array */
} dp_hdr_t;
-#if 0
-static void send_real_buf (demux_real_t *this, uint32_t timestamp, int len,
- fifo_buffer_t *fifo,
- uint32_t buf_type, uint32_t decoder_flags) {
-
- dp_hdr_t *hdr;
- buf_element_t *buf;
-
- if (!fifo) {
- this->input->seek (this->input, len, SEEK_CUR);
- return;
- }
-
- buf = fifo->buffer_pool_alloc (fifo);
-
- buf->content = buf->mem;
-
- hdr = (dp_hdr_t *) buf->content;
- hdr->chunks = 1;
- hdr->timestamp = timestamp;
- hdr->len = len;
- hdr->chunktab = 0;
-
- this->input->read (this->input, buf->content+16, len);
-
- buf->size = len+16;
-
- buf->input_pos = 0 ; /* FIXME */
- buf->input_time = 0 ; /* FIXME */
- buf->type = buf_type;
- buf->decoder_flags = decoder_flags;
-
- fifo->put (fifo, buf);
-
-}
-#endif
static void real_parse_headers (demux_real_t *this) {
@@ -339,7 +309,9 @@ static void real_parse_headers (demux_real_t *this) {
this->bitrate = mdpr->avg_bit_rate;
this->stream->stream_info[XINE_STREAM_INFO_BITRATE] = mdpr->avg_bit_rate;
+#ifdef LOG
printf ("demux_real: parsing type specific data...\n");
+#endif
/* skip unknown stuff - FIXME: find a better/cleaner way */
{
@@ -349,7 +321,9 @@ static void real_parse_headers (demux_real_t *this) {
while (off<=(mdpr->type_specific_len-8)) {
+#ifdef LOG
printf ("demux_real: got %.4s\n", mdpr->type_specific_data+off);
+#endif
if (!strncmp (mdpr->type_specific_data+off, ".ra", 3)) {
int version;
@@ -357,12 +331,16 @@ static void real_parse_headers (demux_real_t *this) {
off += 4;
+#ifdef LOG
printf ("demux_real: audio detected %.3s\n",
mdpr->type_specific_data+off+4);
+#endif
version = BE_16 (mdpr->type_specific_data+off);
+#ifdef LOG
printf ("demux_real: audio version %d\n", version);
+#endif
if (version==4) {
int str_len;
@@ -370,23 +348,31 @@ static void real_parse_headers (demux_real_t *this) {
sample_rate = BE_16(mdpr->type_specific_data+off+44);
+#ifdef LOG
printf ("demux_real: sample_rate %d\n", sample_rate);
+#endif
str_len = *(mdpr->type_specific_data+off+50);
+#ifdef LOG
printf ("demux_real: str_len = %d\n", str_len);
+#endif
memcpy (fourcc, mdpr->type_specific_data+off+53+str_len, 4);
fourcc[4]=0;
+#ifdef LOG
printf ("demux_real: fourcc == %s\n", fourcc);
+#endif
} else if (version == 5) {
memcpy (fourcc, mdpr->type_specific_data+off+62, 4);
fourcc[4]=0;
+#ifdef LOG
printf ("demux_real: fourcc == %s\n", fourcc);
+#endif
} else {
printf ("demux_real: error, unknown audio data header version %d\n",
@@ -405,8 +391,10 @@ static void real_parse_headers (demux_real_t *this) {
else
this->audio_buf_type = 0;
+#ifdef LOG
printf ("demux_real: audio codec, buf type %08x\n",
this->audio_buf_type);
+#endif
this->audio_stream_num = mdpr->stream_number;
@@ -438,7 +426,11 @@ static void real_parse_headers (demux_real_t *this) {
break; /* audio */
}
if (!strncmp (mdpr->type_specific_data+off, "VIDO", 4)) {
+#ifdef LOG
printf ("demux_real: video detected\n");
+#endif
+ /* FIXME: insert video codec detection code here */
+
break; /* video */
}
off++;
@@ -456,7 +448,9 @@ static void real_parse_headers (demux_real_t *this) {
this->video_stream_num = mdpr->stream_number;
this->video_buf_type = BUF_VIDEO_RV20;
+#ifdef LOG
printf ("demux_real: RV20 video detected\n");
+#endif
this->stream->stream_info[XINE_STREAM_INFO_HAS_VIDEO] = 1;
@@ -483,7 +477,9 @@ static void real_parse_headers (demux_real_t *this) {
this->video_stream_num = mdpr->stream_number;
this->video_buf_type = BUF_VIDEO_RV30;
+#ifdef LOG
printf ("demux_real: RV30 video detected\n");
+#endif
this->stream->stream_info[XINE_STREAM_INFO_HAS_VIDEO] = 1;
@@ -505,7 +501,9 @@ static void real_parse_headers (demux_real_t *this) {
} else {
+#ifdef LOG
printf ("demux_real: codec not recognized as video\n");
+#endif
}
@@ -634,7 +632,9 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
buf_element_t *buf;
int n;
+#ifdef LOG
printf ("demux_real: video chunk detected.\n");
+#endif
/* sub-demuxer */
@@ -647,7 +647,9 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
*/
vpkg_header = stream_read_char (this); size--;
+#ifdef LOG
printf ("demux_real: hdr: %02x (size=%d)\n", vpkg_header, size);
+#endif
if (0x40==(vpkg_header&0xc0)) {
/*
@@ -657,7 +659,9 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
int bummer;
bummer = stream_read_char (this); size--;
+#ifdef LOG
printf ("demux_real: bummer == %02X\n",bummer);
+#endif
vpkg_offset = 0;
vpkg_length = size;
@@ -668,7 +672,9 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
/* sub-seqnum (bits 0-6: number of fragment. bit 7: ???) */
vpkg_subseq = stream_read_char (this); size--;
+#ifdef LOG
printf ("demux_real: subseq: %02X ", vpkg_subseq);
+#endif
vpkg_subseq &= 0x7f;
}
@@ -677,12 +683,16 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
* bit 14 is always one (same applies to the offset)
*/
vpkg_length = stream_read_word (this); size -= 2;
+#ifdef LOG
printf ("demux_real: l: %02X %02X ", vpkg_length>>8, vpkg_length&0xff);
+#endif
if (!(vpkg_length&0xC000)) {
vpkg_length <<= 16;
vpkg_length |= stream_read_word (this);
+#ifdef LOG
printf ("demux_real: l+: %02X %02X ",
(vpkg_length>>8)&0xff,vpkg_length&0xff);
+#endif
size-=2;
} else
vpkg_length &= 0x3fff;
@@ -694,24 +704,32 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
*/
vpkg_offset = stream_read_word (this); size -= 2;
+#ifdef LOG
printf ("demux_real: o: %02X %02X ",
vpkg_offset>>8,vpkg_offset&0xff);
+#endif
if (!(vpkg_offset&0xC000)) {
vpkg_offset <<= 16;
vpkg_offset |= stream_read_word (this);
+#ifdef LOG
printf ("demux_real: o+: %02X %02X ",
(vpkg_offset>>8)&0xff,vpkg_offset&0xff);
+#endif
size -= 2;
} else
vpkg_offset &= 0x3fff;
vpkg_seqnum = stream_read_char (this); size--;
+#ifdef LOG
printf ("demux_real: seq: %02X ", vpkg_seqnum);
+#endif
}
+#ifdef LOG
printf ("demux_real: vpkg seqnum=%d, offset=%d, length=%d\n",
vpkg_seqnum, vpkg_offset, vpkg_length);
+#endif
buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
@@ -726,14 +744,18 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
if (this->old_seqnum>=0) {
+#ifdef LOG
printf ("demux_real: we have an incomplete packet (oldseq=%d new=%d)\n",
this->old_seqnum, vpkg_seqnum);
+#endif
/* we have an incomplete packet: */
if (this->old_seqnum != vpkg_seqnum) {
/* this fragment is for new packet, close the old one */
+#ifdef LOG
printf ("demux_real: closing probably incomplete packet\n");
+#endif
/* ds_add_packet(ds,dp); */
this->old_seqnum = -1;
@@ -793,7 +815,9 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
if (0x00 == (vpkg_header&0xc0)) {
+#ifdef LOG
printf ("demux_real: first fragment, %d bytes\n", size);
+#endif
/* first fragment: */
/* this->input->seek (this->input, size, SEEK_CUR); */
@@ -820,7 +844,9 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
break;
}
+#ifdef LOG
printf ("demux_real: whole packet, %d bytes\n", vpkg_length);
+#endif
/* whole packet (not fragmented): */
size -= vpkg_length;
@@ -868,7 +894,6 @@ static int demux_real_send_chunk(demux_plugin_t *this_gen) {
n = this->input->read (this->input, buf->content, size);
if (n<size) {
-
printf ("demux_real: read error\n");
buf->free_buffer(buf);
@@ -1016,8 +1041,10 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str
if (input->read(input, buf, 4)) {
+#ifdef LOG
printf ("demux_real: input seekable, read 4 bytes: %02x %02x %02x %02x\n",
buf[0], buf[1], buf[2], buf[3]);
+#endif
if ((buf[0] != 0x2e)
|| (buf[1] != 'R')
@@ -1029,8 +1056,10 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str
} else if (input->get_optional_data (input, buf, INPUT_OPTIONAL_DATA_PREVIEW)) {
+#ifdef LOG
printf ("demux_real: input provides preview, read 4 bytes: %02x %02x %02x %02x\n",
buf[0], buf[1], buf[2], buf[3]);
+#endif
if ((buf[0] != 0x2e)
|| (buf[1] != 'R')
@@ -1051,11 +1080,15 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str
mrl = input->get_mrl (input);
+#ifdef LOG
printf ("demux_real: by extension '%s'\n", mrl);
+#endif
ending = strrchr(mrl, '.');
+#ifdef LOG
printf ("demux_real: ending %s\n", ending);
+#endif
if (!ending)
return NULL;
@@ -1065,7 +1098,9 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str
&& strncasecmp (ending, ".ram", 4))
return NULL;
+#ifdef LOG
printf ("demux_real: by extension accepted.\n");
+#endif
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-27 10:15:30 +0000