Realaudio support

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10035 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 302 insertions, 0 deletions

diff --git a/libmpdemux/demux_realaud.c b/libmpdemux/demux_realaud.c
new file mode 100644
index 0000000000..9aa128421f
--- /dev/null
+++ b/libmpdemux/demux_realaud.c
@@ -0,0 +1,302 @@
+/*
+    Realaudio demuxer for MPlayer
+		(c) 2003 Roberto Togni
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "mp_msg.h"
+#include "help_mp.h"
+
+#include "stream.h"
+#include "demuxer.h"
+#include "stheader.h"
+#include "bswap.h"
+
+
+#define FOURCC_DOTRA mmioFOURCC('.','r','a', 0xfd)
+#define FOURCC_144 mmioFOURCC('1','4','_','4')
+#define FOURCC_288 mmioFOURCC('2','8','_','8')
+#define FOURCC_DNET mmioFOURCC('d','n','e','t')
+#define FOURCC_LPCJ mmioFOURCC('l','p','c','J')
+
+
+typedef struct {
+	unsigned short version;
+	unsigned int dotranum;
+	unsigned int data_size;
+	unsigned short version2;
+	unsigned int hdr_size;
+	unsigned short codec_flavor;
+	unsigned int coded_framesize;
+	unsigned short sub_packet_h;
+	unsigned short frame_size;
+	unsigned short sub_packet_size;
+	char genr[4];
+} ra_priv_t;
+
+
+
+int ra_check_file(demuxer_t* demuxer)
+{
+	unsigned int chunk_id;
+  
+  stream_reset(demuxer->stream);
+  stream_seek(demuxer->stream, 0);
+
+	chunk_id = stream_read_dword_le(demuxer->stream);
+	if (chunk_id == FOURCC_DOTRA)
+		return 1;
+	else
+		return 0;
+}
+
+
+
+void hexdump(char *, unsigned long);
+
+// return value:
+//     0 = EOF or no stream found
+//     1 = successfully read a packet
+int demux_ra_fill_buffer(demuxer_t *demuxer)
+{
+	ra_priv_t *ra_priv = demuxer->priv;
+	int len;
+	int timestamp;
+	int flags;
+	demux_stream_t *ds = demuxer->audio;
+	sh_audio_t *sh = ds->sh;
+	WAVEFORMATEX *wf = sh->wf;
+	demux_packet_t *dp;
+
+  if (demuxer->stream->eof)
+    return 0;
+
+	len = wf->nBlockAlign;
+	demuxer->filepos = stream_tell(demuxer->stream);
+
+	dp = new_demux_packet(len);
+	stream_read(demuxer->stream, dp->buffer, len);
+
+	if (sh->format == 0x2000) {
+		// if DNET, swap bytes, as DNET is byte-swapped AC3:
+		char *ptr = dp->buffer;
+		int i;
+		for (i = 0; i < len; i += 2) {
+			const char tmp = ptr[0];
+			ptr[0] = ptr[1];
+			ptr[1] = tmp;
+			ptr += 2;
+		}
+	}
+	dp->pts = demuxer->filepos / ra_priv->data_size;;
+	dp->pos = demuxer->filepos;
+	dp->flags = 0;
+	ds_add_packet(ds, dp);
+
+	return 1;
+}
+
+
+
+extern void print_wave_header(WAVEFORMATEX *h);
+
+
+
+void demux_open_ra(demuxer_t* demuxer)
+{
+	ra_priv_t* ra_priv = demuxer->priv;
+	sh_audio_t *sh;
+	int i;
+	char *buf;
+
+  if ((ra_priv = (ra_priv_t *)malloc(sizeof(ra_priv_t))) == NULL) {
+    mp_msg(MSGT_DEMUX, MSGL_ERR, "[RealAudio] Can't allocate memory for private data.\n");
+    return NULL;
+  }
+	memset(ra_priv, 0, sizeof(ra_priv_t));
+
+	demuxer->priv = ra_priv;
+	sh = new_sh_audio(demuxer, 0);
+	demuxer->audio->id = 0;
+	sh->ds=demuxer->audio;
+	demuxer->audio->sh = sh;
+
+	ra_priv->version = stream_read_word(demuxer->stream);
+	mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] File version: %d\n", ra_priv->version);
+	if ((ra_priv->version < 3) || (ra_priv->version > 4)) {
+		mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] ra version %d is not supported yet, please "
+			"contact MPlayer developers\n", ra_priv->version);
+		return NULL;
+	}
+	if (ra_priv->version == 3) {
+		ra_priv->hdr_size = stream_read_word(demuxer->stream);
+		stream_skip(demuxer->stream, 10);
+		ra_priv->data_size = stream_read_dword(demuxer->stream);
+	} else {
+		stream_skip(demuxer->stream, 2);
+		ra_priv->dotranum = stream_read_dword(demuxer->stream);
+		ra_priv->data_size = stream_read_dword(demuxer->stream);
+		ra_priv->version2 = stream_read_word(demuxer->stream);
+		ra_priv->hdr_size = stream_read_dword(demuxer->stream);
+		ra_priv->codec_flavor = stream_read_word(demuxer->stream);
+		ra_priv->coded_framesize = stream_read_dword(demuxer->stream);
+		stream_skip(demuxer->stream, 4); // data size?
+		stream_skip(demuxer->stream, 8);
+		ra_priv->sub_packet_h = stream_read_word(demuxer->stream);
+		ra_priv->frame_size = stream_read_word(demuxer->stream);
+		mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] Frame size: %d\n", ra_priv->frame_size);
+		ra_priv->sub_packet_size = stream_read_word(demuxer->stream);
+		mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] Sub packet size: %d\n", ra_priv->sub_packet_size);
+		stream_skip(demuxer->stream, 2);
+		sh->samplerate = stream_read_word(demuxer->stream);
+		stream_skip(demuxer->stream, 2);
+		sh->samplesize = stream_read_word(demuxer->stream);
+		sh->channels = stream_read_word(demuxer->stream);
+		mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] %d channel, %d bit, %dHz\n", sh->channels,
+			sh->samplesize, sh->samplerate);
+		i = stream_read_char(demuxer->stream);
+		*((unsigned int *)(ra_priv->genr)) = stream_read_dword(demuxer->stream);
+		if (i != 4) {
+			mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] Genr size is not 4 (%d), please report to "
+				"MPlayer developers\n", i);
+			stream_skip(demuxer->stream, i - 4);
+		}
+		i = stream_read_char(demuxer->stream);
+		sh->format = stream_read_dword_le(demuxer->stream);
+		if (i != 4) {
+			mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] FourCC size is not 4 (%d), please report to "
+				"MPlayer developers\n", i);
+			stream_skip(demuxer->stream, i - 4);
+		}
+		stream_skip(demuxer->stream, 3);
+	}
+
+	if ((i = stream_read_char(demuxer->stream)) != 0) {
+		buf = malloc(i+1);
+		stream_read(demuxer->stream, buf, i);
+		buf[i] = 0;
+		demux_info_add(demuxer, "Title", buf);
+		free(buf);
+	}
+	if ((i = stream_read_char(demuxer->stream)) != 0) {
+		buf = malloc(i+1);
+		stream_read(demuxer->stream, buf, i);
+		buf[i] = 0;
+		demux_info_add(demuxer, "Author", buf);
+		free(buf);
+	}
+	if ((i = stream_read_char(demuxer->stream)) != 0) {
+		buf = malloc(i+1);
+		stream_read(demuxer->stream, buf, i);
+		buf[i] = 0;
+		demux_info_add(demuxer, "Copyright", buf);
+		free(buf);
+	}
+
+	if ((i = stream_read_char(demuxer->stream)) != 0)
+		mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] Last header byte is not zero!\n");
+
+	if (ra_priv->version == 3) {
+		stream_skip(demuxer->stream, 1);
+		i = stream_read_char(demuxer->stream);
+		sh->format = stream_read_dword_le(demuxer->stream);
+		if (i != 4) {
+			mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] FourCC size is not 4 (%d), please report to "
+				"MPlayer developers\n", i);
+			stream_skip(demuxer->stream, i - 4);
+		}
+//		stream_skip(demuxer->stream, 3);
+
+		if (sh->format != FOURCC_LPCJ) {
+			mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] Version 3 with FourCC %8x, please report to "
+				"MPlayer developers\n", sh->format);
+		}
+
+		sh->channels = 1;
+		sh->samplesize = 16;
+		sh->samplerate = 8000;
+		ra_priv->frame_size = 240;
+		sh->format = FOURCC_144;
+	}
+
+	/* Fill WAVEFORMATEX */
+	sh->wf = malloc(sizeof(WAVEFORMATEX));
+	memset(sh->wf, 0, sizeof(WAVEFORMATEX));
+	sh->wf->nChannels = sh->channels;
+	sh->wf->wBitsPerSample = sh->samplesize;
+	sh->wf->nSamplesPerSec = sh->samplerate;
+	sh->wf->nAvgBytesPerSec = sh->samplerate*sh->samplesize/8;
+	sh->wf->nBlockAlign = ra_priv->frame_size;
+	sh->wf->cbSize = 0;
+	sh->wf->wFormatTag = sh->format;
+
+	switch (sh->format) {
+		case FOURCC_144:
+			mp_msg(MSGT_DEMUX,MSGL_V,"Audio: 14_4\n");
+			    sh->wf->cbSize = 10/*+codecdata_length*/;
+			    sh->wf = realloc(sh->wf, sizeof(WAVEFORMATEX)+sh->wf->cbSize);
+			    ((short*)(sh->wf+1))[0]=0;
+			    ((short*)(sh->wf+1))[1]=240;
+			    ((short*)(sh->wf+1))[2]=0;
+			    ((short*)(sh->wf+1))[3]=0x14;
+			    ((short*)(sh->wf+1))[4]=0;
+			break;
+		case FOURCC_288:
+			mp_msg(MSGT_DEMUX,MSGL_V,"Audio: 28_8\n");
+			    sh->wf->cbSize = 8/*+codecdata_length*/;
+			    sh->wf = realloc(sh->wf, sizeof(WAVEFORMATEX)+sh->wf->cbSize);
+			    ((short*)(sh->wf+1))[0]=0;
+			    ((short*)(sh->wf+1))[1]=ra_priv->sub_packet_h;
+			    ((short*)(sh->wf+1))[2]=ra_priv->codec_flavor;
+			    ((short*)(sh->wf+1))[3]=ra_priv->coded_framesize;
+			    ((short*)(sh->wf+1))[4]=0;
+			break;
+		case FOURCC_DNET:
+			mp_msg(MSGT_DEMUX,MSGL_V,"Audio: DNET -> AC3\n");
+			sh->format = 0x2000;
+			break;
+		default:
+			mp_msg(MSGT_DEMUX,MSGL_V,"Audio: Unknown (%d)\n", sh->format);
+	}
+
+	print_wave_header(sh->wf);
+
+	/* disable seeking */
+	demuxer->seekable = 0;
+
+	if(!ds_fill_buffer(demuxer->audio))
+		mp_msg(MSGT_DEMUXER,MSGL_INFO,"[RealAudio] No data.\n");
+}
+
+
+
+void demux_close_ra(demuxer_t *demuxer)
+{
+	ra_priv_t* ra_priv = demuxer->priv;
+ 
+	if (ra_priv)
+		free(ra_priv);
+
+	return;
+}
+
+
+#if 0
+/* please upload RV10 samples WITH INDEX CHUNK */
+int demux_seek_ra(demuxer_t *demuxer, float rel_seek_secs, int flags)
+{
+    real_priv_t *priv = demuxer->priv;
+    demux_stream_t *d_audio = demuxer->audio;
+    sh_audio_t *sh_audio = d_audio->sh;
+    int aid = d_audio->id;
+    int next_offset = 0;
+    int rel_seek_frames = 0;
+    int streams = 0;
+
+    return stream_seek(demuxer->stream, next_offset);
+}
+#endif