[MPlayer-cvslog] CVS: main/TOOLS 302m_convert.c, NONE, 1.1 360m_convert.c, NONE, 1.1 Makefile, 1.5, 1.6 README, 1.7, 1.8

[Reimar Döffinger CVS]

CVS change done by Reimar Döffinger CVS

Update of /cvsroot/mplayer/main/TOOLS
In directory mail:/var2/tmp/cvs-serv30019

Modified Files:
	Makefile README 
Added Files:
	302m_convert.c 360m_convert.c 
Log Message:
Add D-Cinema Audio and Video conversion programs


--- NEW FILE ---
/**
 * convert D-Cinema Audio (probably SMPTE 302M) to a
 * wav file that MPlayer can play.
 * Usage: 302m_convert <infile> <outfile>
 */
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <byteswap.h>
#define le2me_32(x) (x)
#define le2me_16(x) (x)
#define be2me_16(x) bswap_16(x)

// From MPlayer libao/ao_pcm.c
#define WAV_ID_RIFF 0x46464952 /* "RIFF" */
#define WAV_ID_WAVE 0x45564157 /* "WAVE" */
#define WAV_ID_FMT  0x20746d66 /* "fmt " */
#define WAV_ID_DATA 0x61746164 /* "data" */
#define WAV_ID_PCM  0x0001

struct WaveHeader {
  uint32_t riff;
  uint32_t file_length;
  uint32_t wave;
  uint32_t fmt;
  uint32_t fmt_length;
  uint16_t fmt_tag;
  uint16_t channels;
  uint32_t sample_rate;
  uint32_t bytes_per_second;
  uint16_t block_align;
  uint16_t bits;
  uint32_t data;
  uint32_t data_length;
};

static struct WaveHeader wavhdr = {
  le2me_32(WAV_ID_RIFF),
  le2me_32(0x7fffffff),
  le2me_32(WAV_ID_WAVE),
  le2me_32(WAV_ID_FMT),
  le2me_32(16),
  le2me_16(WAV_ID_PCM),
  le2me_16(6),
  le2me_32(96000),
  le2me_32(1728000),
  le2me_16(18),
  le2me_16(24),
  le2me_32(WAV_ID_DATA),
  le2me_32(0x7fffffff),
};

// this format is completely braindead, and this bitorder
// is the result of pure guesswork (counting how often
// the bits flip), so it might be wrong.
void fixup(unsigned char *in_, unsigned char *out) {
  int i;
  unsigned char in[3] = {in_[0], in_[1], in_[2]};
  unsigned char sync = in[2] & 0x0f; // sync flags
  in[2] >>= 4;
  out[2] = 0;
  for (i = 0; i < 4; i++) {
    out[2] <<= 1;
    out[2] |= in[2] & 1;
    in[2] >>= 1;
  }
  for (i = 0; i < 4; i++) {
    out[2] <<= 1;
    out[2] |= in[1] & 1;
    in[1] >>= 1;
  }
  out[1] = 0;
  for (i = 0; i < 4; i++) {
    out[1] <<= 1;
    out[1] |= in[1] & 1;
    in[1] >>= 1;
  }
  for (i = 0; i < 4; i++) {
    out[1] <<= 1;
    out[1] |= in[0] & 1;
    in[0] >>= 1;
  }
  out[0] = 0;
  for (i = 0; i < 4; i++) {
    out[0] <<= 1;
    out[0] |= in[0] & 1;
    in[0] >>= 1;
  }
  out[0] <<= 4;
  out[0] |= sync; // sync flags go into lowest bits
  // it seems those might also contain audio data,
  // don't know if this is the right order then
  // these might be also useful to detect the number
  // of channels in case there are files with != 6 channels
}

int main(int argc, char *argv[]) {
  FILE *in = fopen(argv[1], "r");
  FILE *out = fopen(argv[2], "w");
  int i;
  uint16_t blocklen, unknown;
  unsigned char *block;
  if (!in) {
    printf("Could not open %s for reading\n", argv[1]);
    return EXIT_FAILURE;
  }
  if (!out) {
    printf("Could not open %s for writing\n", argv[2]);
    return EXIT_FAILURE;
  }
  fwrite(&wavhdr, 1, sizeof(wavhdr), out);
  do {
    fread(&blocklen, 2, 1, in);
    blocklen = be2me_16(blocklen);
    fread(&unknown, 2, 1, in);
    block = malloc(blocklen);
    blocklen = fread(block, 1, blocklen, in);
    for (i = 0; i < blocklen; i += 3)
      fixup(&block[i], &block[i]);
    fwrite(block, 1, blocklen, out);
    free(block);
  } while (!feof(in));
  return EXIT_SUCCESS;
}


--- NEW FILE ---
/**
 * convert D-Cinema Video (MPEG2 in GXF, SMPTE 360M) to a
 * MPEG-ES file that MPlayer can play (use -demuxer mpeges).
 * Usage: 360m_convert <infile> <outfile>
 */
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
  FILE *in = fopen(argv[1], "r");
  FILE *out = fopen(argv[2], "w");
  int discard = 0;
  unsigned char buf[4];
  if (!in) {
    printf("Could not open %s for reading\n", argv[1]);
    return EXIT_FAILURE;
  }
  if (!out) {
    printf("Could not open %s for writing\n", argv[2]);
    return EXIT_FAILURE;
  }
  fread(buf, 4, 1, in);
  do {
    if (buf[0] == 0 && buf[1] == 0 && buf[2] == 1) {
      // encountered a header
      // skip data between a 0xbf or 0xbc header and the next 0x00 header
      if (buf[3] == 0xbc || buf[3] == 0xbf)
        discard = 1;
      else if (buf[3] == 0)
        discard = 0;
    }
    if (!discard)
      fwrite(&buf[0], 1, 1, out);
    buf[0] = buf[1];
    buf[1] = buf[2];
    buf[2] = buf[3];
    fread(&buf[3], 1, 1, in);
  } while (!feof(in));
  return EXIT_SUCCESS;
}


Index: Makefile
===================================================================
RCS file: /cvsroot/mplayer/main/TOOLS/Makefile,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- Makefile	2 Jul 2005 19:19:41 -0000	1.5
+++ Makefile	23 Aug 2005 18:03:23 -0000	1.6
@@ -15,6 +15,8 @@
 	subrip \
 	fastmemcpybench \
 	vivodump \
+	302m_convert \
+	360m_convert \
 
 all: $(OBJS)
 

Index: README
===================================================================
RCS file: /cvsroot/mplayer/main/TOOLS/README,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -r1.7 -r1.8
--- README	18 Aug 2005 20:00:57 -0000	1.7
+++ README	23 Aug 2005 18:03:23 -0000	1.8
@@ -469,3 +469,24 @@
 Description:  Dumps vobsub soft subtitles streams embedded in avi files.
 
 Usage:        avisubdump <avi>
+
+Format conversion scripts in the TOOLS dir
+------------------------------------------
+
+302m_convert.c
+
+Author:       Reimar Döffinger
+
+Description:  Converts D-Cinema Audio (SMPTE 302M?) to WAV.
+
+Usage:        302m_convert <in.302> <out.wav>
+
+
+360m_convert.c
+
+Author:       Reimar Döffinger
+
+Description:  Converts D-Cinema Videa (MPEG2 in GXF, SMPTE 360M) to MPEG-ES.
+              Use -demuxer mpeges to play the converted file.
+
+Usage:        360m_convert <in.gxf> <out.m2v>