liblzo realtime video codec support (decoding only)

patch by Tilmann Bitterberg <transcode@tibit.org>


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7730 b3059339-0415-0410-9bf9-f77b7e298cf2

Makefile

@@ -45,7 +45,7 @@ AO_LIBS = libao2/libao2.a
 A_LIBS = $(ALSA_LIB) $(ARTS_LIB) $(NAS_LIB) $(MAD_LIB) $(VORBIS_LIB) $(FAAD_LIB) $(SGIAUDIO_LIB)
 
 CODEC_LIBS = libmpcodecs/libmpcodecs.a mp3lib/libMP3.a liba52/liba52.a libmpeg2/libmpeg2.a $(AV_LIB) $(FAME_LIB)
-COMMON_LIBS = $(CODEC_LIBS) libaf/libaf.a libmpdemux/libmpdemux.a input/libinput.a postproc/libpostproc.a linux/libosdep.a $(LIB_LOADER) $(FREETYPE_LIB) $(A_LIBS) $(CSS_LIB) $(XVID_LIB) $(DECORE_LIB) $(TERMCAP_LIB)  $(STREAMING_LIB) $(Z_LIB) $(GTK_LIBS) $(PNG_LIB) $(JPEG_LIB) $(GIF_LIB) $(CDPARANOIA_LIB) $(ARCH_LIB) -lm 
+COMMON_LIBS = $(CODEC_LIBS) libaf/libaf.a libmpdemux/libmpdemux.a input/libinput.a postproc/libpostproc.a linux/libosdep.a $(LIB_LOADER) $(FREETYPE_LIB) $(A_LIBS) $(CSS_LIB) $(XVID_LIB) $(DECORE_LIB) $(TERMCAP_LIB)  $(STREAMING_LIB) $(Z_LIB) $(GTK_LIBS) $(PNG_LIB) $(JPEG_LIB) $(LZO_LIB) $(GIF_LIB) $(CDPARANOIA_LIB) $(ARCH_LIB) -lm 
 ifeq ($(VIDIX),yes)
 MISC_LIBS += -Llibdha -ldha vidix/libvidix.a
 endif

configure

@@ -155,6 +155,7 @@ Codecs:
   --enable-gif		 enable gif89a output support [autodetect]
   --enable-png		 enable png input/output support [autodetect]
   --enable-jpeg		 enable jpeg input/output support [autodetect]
+  --enable-lzo		 enable lzo input support [autodetect]
   --disable-win32        disable Win32 DLL support [autodetect]
   --disable-dshow        disable Win32/DirectShow support [autodetect]
   --disable-xanim        disable XAnim DLL support [autodetect]
@@ -949,6 +950,7 @@ _iconv=auto
 _rtc=auto
 _ossaudio=auto
 _arts=auto
+_lzo=auto
 _mad=auto
 _vorbis=auto
 _faad=auto
@@ -1073,6 +1075,8 @@ for ac_option do
   --disable-arts)	_arts=no	;;
   --enable-mad)		_mad=yes	;;
   --disable-mad)	_mad=no		;;
+  --enable-lzo)		_lzo=yes	;;
+  --disable-lzo)	_lzo=no		;;
   --enable-vorbis)	_vorbis=yes	;;
   --disable-vorbis)	_vorbis=no	;;
   --enable-faad)	_faad=yes	;;
@@ -3395,6 +3399,28 @@ else
 fi
 
 
+echocheck "lzo support"
+if test "$_lzo" = auto ; then
+  _lzo=no
+  cat > $TMPC << EOF
+#include <lzo1x.h>
+int main(void) { lzo_init();return 0; }
+EOF
+  cc_check -llzo && _lzo=yes
+fi
+if test "$_lzo" = yes ; then
+  _def_lzo='#define USE_LZO 1'
+  _ld_lzo='-llzo'
+  _codecmodules="lzo $_codecmodules"
+  _mkf_lzo="yes"
+else
+  _def_lzo='#undef USE_LZO'
+  _nocodecmodules="lzo $_nocodecmodules"
+  _mkf_lzo="no"
+fi
+echores "$_lzo"
+
+
 echocheck "mad support"
 if test "$_mad" = auto ; then
   _mad=no
@@ -4455,6 +4481,8 @@ CDPARANOIA_INC = $_inc_cdparanoia
 CDPARANOIA_LIB = $_ld_cdparanoia
 FREETYPE_INC = $_inc_freetype
 FREETYPE_LIB = $_ld_freetype
+LZO= $_mkf_lzo
+LZO_LIB= $_ld_lzo
 
 # --- Some stuff for autoconfigure ----
 $_target_arch
@@ -4797,6 +4825,9 @@ $_def_gif_4
 /* enable FreeType support */
 $_def_freetype
 
+/* liblzo support */
+$_def_lzo
+
 /* libmad support */
 $_def_mad
 

etc/codecs.conf

@@ -122,6 +122,15 @@ videocodec roqvideo
   driver roqvideo
   out YV12
 
+videocodec lzo
+  info "LZO compressed"
+  status working
+  fourcc LZO1
+  driver lzo
+  dll "liblzo"
+  out YV12,I420
+  out BGR24 flip
+
 ; prefer native codecs over win32?
 ; the win32 codecs probably are (better) optimized and support direct
 ; rendering, so this may be not the best idea...

libmpcodecs/Makefile

@@ -22,6 +22,10 @@ ifeq ($(JPEG),yes)
 VIDEO_SRCS += vd_ijpg.c
 endif
 
+ifeq ($(LZO),yes)
+VIDEO_SRCS += vd_lzo.c
+endif
+
 SRCS=$(AUDIO_SRCS) $(VIDEO_SRCS) $(VFILTER_SRCS) $(NATIVE_SRCS) img_format.c
 OBJS=$(SRCS:.c=.o)
 

libmpcodecs/vd.c

@@ -55,6 +55,7 @@ extern vd_functions_t mpcodecs_vd_svq1;
 extern vd_functions_t mpcodecs_vd_xvid;
 extern vd_functions_t mpcodecs_vd_libdv;
 extern vd_functions_t mpcodecs_vd_lcl;
+extern vd_functions_t mpcodecs_vd_lzo;
 
 vd_functions_t* mpcodecs_vd_drivers[] = {
         &mpcodecs_vd_null,
@@ -75,6 +76,9 @@ vd_functions_t* mpcodecs_vd_drivers[] = {
 #ifdef NEW_DECORE
         &mpcodecs_vd_divx4,
 #endif
+#endif
+#ifdef USE_LZO
+        &mpcodecs_vd_lzo,
 #endif
         &mpcodecs_vd_raw,
         &mpcodecs_vd_msrle,

libmpcodecs/vd_lzo.c

@@ -0,0 +1,148 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "config.h"
+#include "mp_msg.h"
+
+#include "vd_internal.h"
+
+#include <lzo1x.h>
+
+#define MOD_NAME "DecLZO"
+
+static vd_info_t info = {
+	"LZO compressed Video",
+	"lzo",
+	"Tilmann Bitterberg",
+	"Transcode development team <http://www.theorie.physik.uni-goettingen.de/~ostreich/transcode/>",
+	"based on liblzo: http://www.oberhumer.com/opensource/lzo/"
+};
+
+LIBVD_EXTERN(lzo)
+
+
+static lzo_byte *wrkmem=NULL;
+static int codec = -1;
+
+// to set/get/query special features/parameters
+static int control (sh_video_t *sh, int cmd, void* arg, ...)
+{
+
+    //printf("[%s] Query!! (%s)\n", MOD_NAME, (codec==IMGFMT_BGR24)?"BGR":"none");
+    //printf("[%s] Query!! (%s)\n", MOD_NAME, (codec==IMGFMT_YV12)?"YV12":"none");
+    switch(cmd){
+    case VDCTRL_QUERY_FORMAT:
+	if( (*((int*)arg)) == IMGFMT_BGR24 && codec == IMGFMT_BGR24) return CONTROL_TRUE;
+	if( (*((int*)arg)) == IMGFMT_YV12 && codec == IMGFMT_YV12) return CONTROL_TRUE;
+	return CONTROL_FALSE;
+    }
+    return CONTROL_UNKNOWN;
+}
+
+
+// init driver
+static int init(sh_video_t *sh)
+{
+
+    if (lzo_init() != LZO_E_OK) {
+	mp_msg (MSGT_DECVIDEO, MSGL_WARN, "[%s] lzo_init() failed\n", MOD_NAME);
+	return 0; 
+    }
+
+    if (!wrkmem) wrkmem = (lzo_bytep) lzo_malloc(LZO1X_1_MEM_COMPRESS);
+
+    if (wrkmem == NULL) {
+	mp_msg (MSGT_DECVIDEO, MSGL_ERR, "[%s] Cannot alloc work memory\n", MOD_NAME);
+	return 0;
+    }
+
+    return 1;
+}
+
+// uninit driver
+static void uninit(sh_video_t *sh)
+{
+    if (wrkmem) { lzo_free(wrkmem); wrkmem = NULL;}
+}
+
+//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
+
+// decode a frame
+static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags)
+{
+    static int init_done = 0;
+    int r;
+    int cb = 1;
+    int cr = 2;
+    mp_image_t* mpi;
+    int w, h;
+
+    if (len <= 0) {
+	    return NULL; // skipped frame
+    }
+    
+
+    if (!init_done) {
+	lzo_byte *tmp=NULL;
+	
+	// decompress one frame to see if its
+	// either YV12 or RGB24
+	if (!tmp) tmp = lzo_malloc(sh->bih->biSizeImage);
+
+	mp_msg (MSGT_DECVIDEO, MSGL_V, "[%s] 2 depth %d, format %d data %p len (%d) (%d)\n",
+	    MOD_NAME, sh->bih->biBitCount, sh->format, data, len, sh->bih->biSizeImage
+	    );
+
+	/* decompress the frame */
+	r = lzo1x_decompress (data, len, tmp, &w, wrkmem);
+
+	if (r != LZO_E_OK) {
+	    /* this should NEVER happen */
+	    mp_msg (MSGT_DECVIDEO, MSGL_ERR, 
+		    "[%s] internal error - decompression failed: %d\n", MOD_NAME, r);
+	    return NULL;
+	}
+
+	if        (w == (sh->bih->biSizeImage))   {
+	    codec = IMGFMT_BGR24;
+	    mp_msg (MSGT_DECVIDEO, MSGL_V, "[%s] codec choosen is BGR24\n", MOD_NAME);
+	} else if (w == (sh->bih->biSizeImage)/2) {
+	    codec = IMGFMT_YV12;
+	    mp_msg (MSGT_DECVIDEO, MSGL_V, "[%s] codec choosen is YV12\n", MOD_NAME);
+	} else {
+	    codec = -1;
+	    mp_msg(MSGT_DECVIDEO,MSGL_ERR,"[%s] Unsupported out_fmt\n", MOD_NAME);
+	    return NULL;
+	}
+
+	mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,codec);
+	init_done++;
+	free(tmp);
+    }
+
+    mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, 0,
+	sh->disp_w, sh->disp_h);
+
+
+    if (!mpi) {
+	    mp_msg (MSGT_DECVIDEO, MSGL_ERR, "[%s] mpcodecs_get_image failed\n", MOD_NAME);
+	    return NULL;
+    }
+
+    r = lzo1x_decompress (data, len, mpi->planes[0], &w, wrkmem);
+    if (r != LZO_E_OK) {
+	/* this should NEVER happen */
+	mp_msg (MSGT_DECVIDEO, MSGL_ERR, 
+		"[%s] internal error - decompression failed: %d\n", MOD_NAME, r);
+      return NULL;
+    }
+
+    mp_msg (MSGT_DECVIDEO, MSGL_DBG2, 
+		"[%s] decompressed %lu bytes into %lu bytes\n", MOD_NAME,
+		(long) len, (long)w);
+
+    return mpi;
+}
+
+/* vim: sw=4
+   */