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mpv/libvo/vo_dxr3.c

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/*
* vo_dxr3.c - DXR3/H+ video out
*
* Copyright (C) 2002 David Holm <dholm@iname.com>
*
*/
/* ChangeLog added 2002-01-10
* 2002-04-15:
* The spuenc code isn't 100% stable yet, therefore I'm disabling
* it due to the upcoming stable release.
*
* 2002-04-03:
* Carl George added spuenc support
*
* 2002-03-26:
* XorA added an option parser and support for selecting encoder
* codec. We thank him again.
*
* 2002-03-25:
* A couple of bugfixes by XorA
*
* 2002-03-23:
* Thanks to Marcel Hild <hild@b4mad.net> the jitter-bug experienced
* with some videos have been fixed, many thanks goes to him.
*
* 2002-03-16:
* Fixed problems with fame, it gives a better picture than avcodec,
* but is slightly slower. Most notably the wobbling effect is gone
* with fame.
*
* 2002-03-13:
* Preliminary fame support added (it breaks after seeking, why?)
*
* 2002-02-18:
* Fixed sync problems when pausing video (while using prebuffering)
*
* 2002-02-16:
* Fixed bug which would case invalid output when using :noprebuf
* Removed equalization code, it caused problems on slow systems
*
* 2002-02-13:
* Using the swscaler instead of the old hand coded shit. (Checkout man mplayer and search for sws ;).
* Using aspect function to setup a proper mpeg1, no more hassling with odd resolutions or GOP-sizes,
* this would only create jitter on some vids!
* The swscaler sometimes exits with sig8 on mpegs, I don't know why yet (just use -vc mpegpes in this
* case, and report to me if you have any avi's etc which does this...)
*
* 2002-02-09:
* Thanks to the new control() method I have finally been able to enable the em8300 prebuffering.
* This should speed up playback on all systems, the vout cpu usage should rocket since I will be hogging
* the pci bus. Not to worry though, since frames are prebuffered it should be able to take a few blows
* if you start doing other stuff simultaneously.
*
* 2002-02-03:
* Removal of libmp1e, libavcodec has finally become faster (and it's code is helluva lot cleaner)
*
* 2002-02-02:
* Cleaned out some old code which might have slowed down writes
*
* 2002-01-17:
* Testrelease of new sync engine (using previously undocumented feature of em8300).
*
* 2002-01-15:
* Preliminary subpic support with -vc mpegpes and dvd's
* Device interfaces tries the new naming scheme by default (even though most users probably still use the old one)
*
* 2002-01-10:
* I rehauled the entire codebase. I have now changed to
* Kernighan & Ritchie codingstyle, please mail me if you
* find any inconcistencies.
*/
#include <linux/em8300.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/select.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
#include <time.h>
#include "config.h"
#include "fastmemcpy.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "aspect.h"
#include "postproc/rgb2rgb.h"
#include "postproc/swscale.h"
#include "cpudetect.h"
#include "spuenc.h"
//#define USE_LIBFAME // this is done in configure now
/* Libfame codec initialisation */
#ifdef USE_LIBFAME
#include "../libfame/fame.h"
static unsigned char *outbuf = NULL;
static fame_parameters_t fame_params;
static fame_yuv_t fame_yuv;
static fame_context_t *fame_ctx = NULL;
static fame_object_t *fame_obj;
#endif
/* libavcodec codec initialisation */
#ifdef USE_LIBAVCODEC
#ifdef USE_LIBAVCODEC_SO
#include <libffmpeg/avcodec.h>
#include <libffmpeg/dsputil.h>
#else
#include "libavcodec/avcodec.h"
#include "libavcodec/dsputil.h"
#endif
/* for video encoder */
static AVCodec *avc_codec = NULL;
static AVCodecContext *avc_context = NULL;
static AVPicture avc_picture;
int avc_outbuf_size = 100000;
extern int avcodec_inited;
extern int motion_estimation_method;
#endif
char *picture_data[] = { NULL, NULL, NULL };
int picture_linesize[] = { 0, 0, 0 };
#ifdef HAVE_MMX
#include "mmx.h"
#endif
LIBVO_EXTERN (dxr3)
/* codec control */
enum MpegCodec {
MPG_CODEC_NON,
MPG_CODEC_AVCODEC,
MPG_CODEC_FAME
};
#if defined(USE_LIBAVCODEC)
static int mpeg_codec = MPG_CODEC_AVCODEC;
#elif defined(USE_LIBFAME)
static int mpeg_codec = MPG_CODEC_FAME;
#else
static int mpeg_codec = MPG_CODEC_NONE;
#endif
/* Resolutions and positions */
static int v_width, v_height;
static int s_width, s_height;
static int osd_w, osd_h;
static int noprebuf = 0;
static int img_format = 0;
static SwsContext * sws = NULL;
/* File descriptors */
static int fd_control = -1;
static int fd_video = -1;
static int fd_spu = -1;
static char fdv_name[80];
static char fds_name[80];
/* on screen display/subpics */
static char *osdpicbuf = NULL;
static int osdpicbuf_w;
static int osdpicbuf_h;
static int disposd = 0;
static encodedata *spued;
/* Static variable used in ioctl's */
static int ioval = 0;
static vo_info_t vo_info =
{
"DXR3/H+ video out",
"dxr3",
"David Holm <dholm@iname.com>",
""
};
uint32_t control(uint32_t request, void *data, ...)
{
uint32_t flag = 0;
switch (request) {
case VOCTRL_RESUME:
if (!noprebuf) {
ioval = EM8300_PLAYMODE_PLAY;
if (ioctl(fd_control, EM8300_IOCTL_SET_PLAYMODE, &ioval) < 0) {
printf("VO: [dxr3] Unable to set playmode!\n");
}
}
return VO_TRUE;
case VOCTRL_PAUSE:
if (!noprebuf) {
ioval = EM8300_PLAYMODE_PAUSED;
if (ioctl(fd_control, EM8300_IOCTL_SET_PLAYMODE, &ioval) < 0) {
printf("VO: [dxr3] Unable to set playmode!\n");
}
}
return VO_TRUE;
case VOCTRL_RESET:
if (!noprebuf) {
close(fd_video);
fd_video = open(fdv_name, O_WRONLY);
close(fd_spu);
fd_spu = open(fds_name, O_WRONLY);
fsync(fd_video);
fsync(fd_spu);
}
return VO_TRUE;
case VOCTRL_QUERY_FORMAT:
switch (*((uint32_t*)data)) {
case IMGFMT_MPEGPES:
/* Hardware accelerated | Hardware supports subpics */
flag = VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_SPU;
break;
#if defined(USE_LIBFAME) || defined(USE_LIBAVCODEC)
case IMGFMT_YV12:
case IMGFMT_YUY2:
case IMGFMT_RGB24:
case IMGFMT_BGR24:
/* Conversion needed | OSD Supported */
flag = VFCAP_CSP_SUPPORTED | VFCAP_OSD;
break;
#else
default:
printf("VO: [dxr3] You have disabled libavcodec/libfame support (Read DOCS/codecs.html)!\n");
#endif
}
if (noprebuf) {
return flag;
} else {
return (flag | VFCAP_TIMER);
}
}
return VO_NOTIMPL;
}
static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format, const vo_tune_info_t *info)
{
int tmp1, tmp2, size;
em8300_register_t reg;
extern float monitor_aspect;
/* Softzoom turned on, downscale */
/* This activates the subpicture processor, you can safely disable this and still send */
/* broken subpics to the em8300, if it's enabled and you send broken subpics you will end */
/* up in a lockup */
ioval = EM8300_SPUMODE_ON;
if (ioctl(fd_control, EM8300_IOCTL_SET_SPUMODE, &ioval) < 0) {
printf("VO: [dxr3] Unable to set subpicture mode!\n");
uninit();
return -1;
}
/* Set the playmode to play (just in case another app has set it to something else) */
ioval = EM8300_PLAYMODE_PLAY;
if (ioctl(fd_control, EM8300_IOCTL_SET_PLAYMODE, &ioval) < 0) {
printf("VO: [dxr3] Unable to set playmode!\n");
}
/* Start em8300 prebuffering and sync engine */
#ifdef MVCOMMAND_SYNC
reg.microcode_register = 1;
reg.reg = 0;
reg.val = MVCOMMAND_SYNC;
ioctl(fd_control, EM8300_IOCTL_WRITEREG, &reg);
#endif
#ifdef EM8300_IOCTL_FLUSH
/* Clean buffer by syncing it */
ioval = EM8300_SUBDEVICE_VIDEO;
ioctl(fd_control, EM8300_IOCTL_FLUSH, &ioval);
ioval = EM8300_SUBDEVICE_AUDIO;
ioctl(fd_control, EM8300_IOCTL_FLUSH, &ioval);
#endif
fsync(fd_video);
if (!noprebuf) {
ioval = 0x900;
ioctl(fd_control, EM8300_IOCTL_SCR_SETSPEED, &ioval);
ioval = 0;
ioctl(fd_control, EM8300_IOCTL_SCR_SET, &ioval);
}
/* Store some variables statically that we need later in another scope */
img_format = format;
v_width = width;
v_height = height;
/* Set monitor_aspect to avoid jitter */
monitor_aspect = (float) width / (float) height;
/* libavcodec requires a width and height that is x|16 */
aspect_save_orig(width, height);
aspect_save_prescale(d_width, d_height);
#ifdef EM8300_IOCTL_GET_VIDEOMODE
ioctl(fd_control, EM8300_IOCTL_GET_VIDEOMODE, &ioval);
if (ioval == EM8300_VIDEOMODE_NTSC) {
printf("VO: [dxr3] Setting up for NTSC.\n");
aspect_save_screenres(352, 240);
} else {
printf("VO: [dxr3] Setting up for PAL/SECAM.\n");
aspect_save_screenres(352, 288);
}
#endif
aspect(&s_width, &s_height, A_ZOOM);
s_width -= s_width % 16;
s_height -= s_height % 16;
/* Try to figure out whether to use widescreen output or not */
/* Anamorphic widescreen modes makes this a pain in the ass */
tmp1 = abs(d_height - ((d_width / 4) * 3));
tmp2 = abs(d_height - (int) (d_width / 2.35));
if (tmp1 < tmp2) {
ioval = EM8300_ASPECTRATIO_4_3;
printf("VO: [dxr3] Setting aspect ratio to 4:3\n");
} else {
ioval = EM8300_ASPECTRATIO_16_9;
printf("VO: [dxr3] Setting aspect ratio to 16:9\n");
}
ioctl(fd_control, EM8300_IOCTL_SET_ASPECTRATIO, &ioval);
if (format != IMGFMT_MPEGPES) {
size = s_width * s_height;
picture_data[0] = malloc((size * 3) / 2);
picture_data[1] = picture_data[0] + size;
picture_data[2] = picture_data[1] + size / 4;
picture_linesize[0] = s_width;
picture_linesize[1] = s_width / 2;
picture_linesize[2] = s_width / 2;
switch (mpeg_codec) {
#ifdef USE_LIBFAME
case MPG_CODEC_FAME:
printf("VO: [dxr3] Using FAME\n");
fame_ctx = fame_open();
if (!fame_ctx) {
printf("VO: [dxr3] Cannot open libFAME!\n");
return -1;
}
fame_obj = fame_get_object(fame_ctx, "motion/pmvfast");
fame_register(fame_ctx, "motion", fame_obj);
memset(&fame_params, 0, sizeof(fame_parameters_t));
fame_params.width = s_width;
fame_params.height = s_height;
fame_params.coding = "IPPPPPPP";
fame_params.quality = 90;
fame_params.bitrate = 0;
fame_params.slices_per_frame = 1;
fame_params.frames_per_sequence = (int) (vo_fps + 0.5);
fame_params.shape_quality = 100;
fame_params.search_range = (int) (vo_fps + 0.5);
fame_params.verbose = 0;
fame_params.profile = NULL;
if (vo_fps < 24.0) {
fame_params.frame_rate_num = 24000;
fame_params.frame_rate_den = 1001;
} else if (vo_fps < 25.0) {
fame_params.frame_rate_num = 24;
fame_params.frame_rate_den = 1;
} else if (vo_fps < 29.0) {
fame_params.frame_rate_num = 25;
fame_params.frame_rate_den = 1;
} else if (vo_fps < 30.0) {
fame_params.frame_rate_num = 30000;
fame_params.frame_rate_den = 1001;
} else if (vo_fps < 50.0) {
fame_params.frame_rate_num = 30;
fame_params.frame_rate_den = 1;
} else if (vo_fps < 55.0) {
fame_params.frame_rate_num = 50;
fame_params.frame_rate_den = 1;
} else if (vo_fps < 60.0) {
fame_params.frame_rate_num = 60000;
fame_params.frame_rate_den = 1001;
} else {
fame_params.frame_rate_num = 60;
fame_params.frame_rate_den = 1;
}
outbuf = malloc(100000);
fame_init(fame_ctx, &fame_params, outbuf, 100000);
fame_yuv.w = s_width;
fame_yuv.h = s_height;
fame_yuv.y = picture_data[0];
fame_yuv.u = picture_data[1];
fame_yuv.v = picture_data[2];
break;
#endif
#ifdef USE_LIBAVCODEC
case MPG_CODEC_AVCODEC:
printf("VO: [dxr3] Using AVCODEC\n");
avc_codec = avcodec_find_encoder(CODEC_ID_MPEG1VIDEO);
if (!avc_codec) {
printf("VO: [dxr3] Unable to find mpeg1video codec\n");
uninit();
return -1;
}
if (avc_context) {
free(avc_context);
}
avc_context = malloc(sizeof(AVCodecContext));
memset(avc_context, 0, sizeof(AVCodecContext));
avc_context->width = s_width;
avc_context->height = s_height;
// realy need this line ? -- Pontscho
// ioctl(fd_control, EM8300_IOCTL_GET_VIDEOMODE, &ioval);
avc_context->gop_size = 7;
avc_context->frame_rate = (int) (vo_fps * FRAME_RATE_BASE);
avc_context->bit_rate = 0;
avc_context->flags = CODEC_FLAG_QSCALE;
avc_context->quality = 2;
avc_context->pix_fmt = PIX_FMT_YUV420P;
motion_estimation_method = ME_EPZS;
if (avcodec_open(avc_context, avc_codec) < 0) {
printf("VO: [dxr3] Unable to open codec\n");
uninit();
return -1;
}
/* Create a pixel buffer and set up pointers for color components */
memset(&avc_picture, 0, sizeof(avc_picture));
avc_picture.linesize[0] = picture_linesize[0];
avc_picture.linesize[1] = picture_linesize[1];
avc_picture.linesize[2] = picture_linesize[2];
avc_picture.data[0] = picture_data[0];
avc_picture.data[1] = picture_data[1];
avc_picture.data[2] = picture_data[2];
break;
#endif
}
sws = getSwsContextFromCmdLine(v_width, v_height, img_format, s_width, s_height, IMGFMT_YV12);
if (!sws) {
printf("vo_vesa: Can't initialize SwScaler\n");
return -1;
}
/* This stuff calculations the relative position of the osd */
osd_w = s_width;
osd_h = s_height;
if (format == IMGFMT_BGR24) {
yuv2rgb_init(24, MODE_BGR);
} else {
yuv2rgb_init(24, MODE_RGB);
}
return 0;
} else if (format == IMGFMT_MPEGPES) {
printf("VO: [dxr3] Format: MPEG-PES (no conversion needed)\n");
osdpicbuf = malloc(s_width * s_height);
if (osdpicbuf == NULL) {
printf("vo_dxr3: out of mem\n");
return -1;
}
spued = (encodedata *) malloc(sizeof(encodedata));
if (spued == NULL) {
printf("vo_dxr3:out of mem\n");
return -1;
}
osd_w = s_width;
osd_h = s_height;
osdpicbuf_w = s_width;
osdpicbuf_h = s_height;
return 0;
}
printf("VO: [dxr3] Format: Unsupported\n");
uninit();
return -1;
}
static const vo_info_t* get_info(void)
{
return &vo_info;
}
static void draw_alpha(int x, int y, int w, int h, unsigned char* src, unsigned char *srca, int srcstride)
{
/*int lx, ly, bx;
unsigned char *buf;
buf = &osdpicbuf[(y * osdpicbuf_w) + x];
if (img_format == IMGFMT_MPEGPES) {
for (ly = 0; ly < h - 1; ly++) {
for(lx = 0; lx < w; lx++) {
if ((srca[(ly * srcstride) + lx] != 0) && (src[(ly * srcstride) + lx] != 0)) {
if(src[(ly * srcstride) + lx] >= 128) {
buf[ly * osdpicbuf_w + lx] = 3;
}
}
}
}
pixbuf_encode_rle(x, y, osdpicbuf_w, osdpicbuf_h - 1, osdpicbuf, osdpicbuf_w, spued);
} else*/ {
#if defined(USE_LIBAVCODEC) || defined(USE_LIBFAME)
vo_draw_alpha_yv12(w, h, src, srca, srcstride,
picture_data[0] + x + y * picture_linesize[0], picture_linesize[0]);
#endif
}
}
static void draw_osd(void)
{
if (img_format != IMGFMT_MPEGPES) {
vo_draw_text(osd_w, osd_h, draw_alpha);
} /*else if ((disposd % 15) == 0) {
vo_draw_text(osd_w, osd_h, draw_alpha);
memset(osdpicbuf, 0, s_width * s_height);
*/
/* could stand some check here to see if the subpic hasn't changed
* as if it hasn't and we re-send it it will "blink" as the last one
* is turned off, and the new one (same one) is turned on
*/
/*if (!noprebuf) {
ioctl(fd_spu, EM8300_IOCTL_SPU_SETPTS, &vo_pts);
}
write(fd_spu, spued->data, spued->count);
}
disposd++;*/
}
static uint32_t draw_frame(uint8_t * src[])
{
char *pData;
int pSize;
if (img_format == IMGFMT_MPEGPES) {
vo_mpegpes_t *p = (vo_mpegpes_t *) src[0];
if (p->id == 0x20) {
if (!noprebuf) {
ioctl(fd_spu, EM8300_IOCTL_SPU_SETPTS, &vo_pts);
}
write(fd_spu, p->data, p->size);
} else {
write(fd_video, p->data, p->size);
}
return 0;
} else {
int size, srcStride = (img_format == IMGFMT_YUY2) ? (v_width * 2) : (v_width * 3);
sws->swScale(sws, src, &srcStride, 0, v_height, picture_data, picture_linesize);
draw_osd();
switch (mpeg_codec) {
#ifdef USE_LIBFAME
case MPG_CODEC_FAME:
size = fame_encode_frame(fame_ctx, &fame_yuv, NULL);
write(fd_video, outbuf, size);
break;
#endif
#ifdef USE_LIBAVCODEC
case MPG_CODEC_AVCODEC:
size = avcodec_encode_video(avc_context, picture_data[0], avc_outbuf_size, &avc_picture);
write(fd_video, picture_data[0], size);
break;
#endif
}
return 0;
}
return -1;
}
static void flip_page(void)
{
int size;
if (!noprebuf) {
ioctl(fd_video, EM8300_IOCTL_VIDEO_SETPTS, &vo_pts);
}
if (img_format == IMGFMT_YV12) {
switch (mpeg_codec) {
#ifdef USE_LIBFAME
case MPG_CODEC_FAME:
size = fame_encode_frame(fame_ctx, &fame_yuv, NULL);
write(fd_video, outbuf, size);
break;
#endif
#ifdef USE_LIBAVCODEC
case MPG_CODEC_AVCODEC:
size = avcodec_encode_video(avc_context, picture_data[0], avc_outbuf_size, &avc_picture);
if (!noprebuf) {
ioctl(fd_video, EM8300_IOCTL_VIDEO_SETPTS, &vo_pts);
}
write(fd_video, picture_data[0], size);
break;
#endif
}
}
}
static uint32_t draw_slice(uint8_t *srcimg[], int stride[], int w, int h, int x0, int y0)
{
if (img_format == IMGFMT_YV12) {
sws->swScale(sws, srcimg, stride, y0, h, picture_data, picture_linesize);
return 0;
}
return -1;
}
static void uninit(void)
{
printf("VO: [dxr3] Uninitializing\n");
if (sws) {
freeSwsContext(sws);
}
switch (mpeg_codec) {
#ifdef USE_LIBFAME
case MPG_CODEC_FAME:
if (fame_ctx) {
fame_close(fame_ctx);
}
break;
#endif
#ifdef USE_LIBAVCODEC
case MPG_CODEC_AVCODEC:
if (avc_context) {
avcodec_close(avc_context);
}
break;
#endif
}
if (picture_data[0]) {
free(picture_data[0]);
}
if (fd_video) {
close(fd_video);
}
if (fd_spu) {
close(fd_spu);
}
if (fd_control) {
close(fd_control);
}
if(osdpicbuf) {
free(osdpicbuf);
}
if(spued) {
free(spued);
}
}
static void check_events(void)
{
}
static uint32_t preinit(const char *arg)
{
char devname[80];
int fdflags = O_WRONLY;
CpuCaps cpucaps;
GetCpuCaps(&cpucaps);
/* Open the control interface */
if (arg && !strncmp("noprebuf", arg, 8)) {
printf("VO: [dxr3] Disabling prebuffering.\n");
noprebuf = 1;
fdflags |= O_NONBLOCK;
arg = strchr(arg, ':');
if (arg) {
arg++;
}
}
if (cpucaps.has3DNowExt) {
printf("VO: [dxr3] Fast AMD special disabling prebuffering.\n");
noprebuf = 1;
fdflags |= O_NONBLOCK;
}
#if defined(USE_LIBFAME)
printf("VO: [dxr3] FAME supported\n");
if (arg && !strncmp("fame", arg, 4)) {
mpeg_codec = MPG_CODEC_FAME;
arg = strchr(arg, ':');
if (arg) {
arg++;
}
}
#endif
#if defined(USE_LIBAVCODEC)
printf("VO: [dxr3] AVCODEC supported\n");
if (arg && !strncmp("avcodec", arg, 7)) {
mpeg_codec = MPG_CODEC_AVCODEC;
arg = strchr(arg, ':');
if (arg) {
arg++;
}
}
#endif
if (arg && arg[0]) {
printf("VO: [dxr3] Forcing use of device %s\n", arg);
sprintf(devname, "/dev/em8300-%s", arg);
} else {
/* Try new naming scheme by default */
sprintf(devname, "/dev/em8300-0");
}
fd_control = open(devname, fdflags);
if (fd_control < 1) {
/* Fall back to old naming scheme */
printf("VO: [dxr3] Error opening %s for writing, trying /dev/em8300 instead\n", devname);
sprintf(devname, "/dev/em8300");
fd_control = open(devname, fdflags);
if (fd_control < 1) {
printf("VO: [dxr3] Error opening /dev/em8300 for writing as well!\nBailing\n");
return -1;
}
}
/* Open the video interface */
if (arg && !noprebuf) {
sprintf(devname, "/dev/em8300_mv-%s", arg);
} else {
/* Try new naming scheme by default */
sprintf(devname, "/dev/em8300_mv-0");
}
fd_video = open(devname, fdflags);
if (fd_video < 0) {
/* Fall back to old naming scheme */
printf("VO: [dxr3] Error opening %s for writing, trying /dev/em8300_mv instead\n", devname);
sprintf(devname, "/dev/em8300_mv");
fd_video = open(devname, fdflags);
if (fd_video < 0) {
printf("VO: [dxr3] Error opening /dev/em8300_mv for writing as well!\nBailing\n");
uninit();
return -1;
}
} else {
printf("VO: [dxr3] Opened %s\n", devname);
}
strcpy(fdv_name, devname);
/* Open the subpicture interface */
fdflags |= O_NONBLOCK;
if (arg && !noprebuf) {
sprintf(devname, "/dev/em8300_sp-%s", arg);
} else {
/* Try new naming scheme by default */
sprintf(devname, "/dev/em8300_sp-0");
}
fd_spu = open(devname, fdflags);
if (fd_spu < 0) {
/* Fall back to old naming scheme */
printf("VO: [dxr3] Error opening %s for writing, trying /dev/em8300_sp instead\n", devname);
sprintf(devname, "/dev/em8300_sp");
fd_spu = open(devname, fdflags);
if (fd_spu < 0) {
printf("VO: [dxr3] Error opening /dev/em8300_sp for writing as well!\nBailing\n");
uninit();
return -1;
}
}
strcpy(fds_name, devname);
#if defined(USE_LIBAVCODEC)
if (mpeg_codec == MPG_CODEC_AVCODEC && !avcodec_inited) {
avcodec_init();
avcodec_register_all();
avcodec_inited = 1;
}
#endif
return 0;
}
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