mpv/libvo/vo_zr2.c

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/*
* vo_zr2.c - playback on zoran cards
* Based on vo_zr.c,v 1.27
* Copyright (C) Rik Snel 2001-2003, License GNU GPL v2
*/
/* $Id$ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/videodev.h>
#include "videodev_mjpeg.h"
#include "config.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "../mp_msg.h"
#include "fastmemcpy.h"
static vo_info_t info = {
"Zoran ZR360[56]7/ZR36060 Driver (DC10(+)/buz/lml33/MatroxRR)",
"zr2",
"Rik Snel <snel@phys.uu.nl>",
""
};
LIBVO_EXTERN(zr2)
typedef struct {
/* options */
char *subdevice;
/* information for (and about) the zoran card */
unsigned char *buf; /* the JPEGs will be placed here */
struct mjpeg_requestbuffers zrq; /* info about this buffer */
int vdes; /* file descriptor of card */
int playing; /* 0 or 1 */
int frame, sync, queue; /* buffer management */
struct mjpeg_sync zs; /* state information */
struct mjpeg_params zp;
struct video_capability vc; /* max resolution and so on */
} vo_zr2_priv_t;
static vo_zr2_priv_t priv;
#define ZR2_MJPEG_NBUFFERS 2
#define ZR2_MJPEG_SIZE 1024*256
/* some convenient #define's, is this portable enough? */
#define DBG2(...) mp_msg(MSGT_VO, MSGL_DBG2, "vo_zr2: " __VA_ARGS__)
#define VERBOSE(...) mp_msg(MSGT_VO, MSGL_V, "vo_zr2: " __VA_ARGS__)
#define ERROR(...) mp_msg(MSGT_VO, MSGL_ERR, "vo_zr2: " __VA_ARGS__)
#define WARNING(...) mp_msg(MSGT_VO, MSGL_WARN, "vo_zr2: " __VA_ARGS__)
static void stop_playing(vo_zr2_priv_t *p) {
if (p->playing) {
p->frame = -1;
if (ioctl(p->vdes, MJPIOC_QBUF_PLAY, &p->frame) < 0)
ERROR("error stopping playback\n");
p->playing = 0;
p->sync = 0;
p->queue = 0;
p->frame = 0;
}
}
static char *guess_device(char *suggestion) {
struct stat vstat;
int res;
char *devs[] = {
"/dev/video",
"/dev/video0",
"/dev/v4l/video0",
"/dev/v4l0",
"/dev/v4l",
NULL
};
char **dev = devs;
if (suggestion) {
if (!*suggestion) {
ERROR("error: specified device name is empty string\n");
return NULL;
}
res = stat(suggestion, &vstat);
if (res == 0 && S_ISCHR(vstat.st_mode)) {
VERBOSE("using device %s\n", suggestion);
return suggestion;
} else {
if (res != 0) ERROR("%s does not exist\n", suggestion);
else ERROR("%s is no character device\n", suggestion);
/* don't try to be smarter than the user, just exit */
return NULL;
}
}
while (*(++dev) != NULL) {
if (stat(*dev, &vstat) == 0 && S_ISCHR(vstat.st_mode)) {
VERBOSE("guessed video device %s\n", *dev);
return *dev;
}
dev++;
}
ERROR("unable to find video device\n");
return NULL;
}
static uint32_t query_format(uint32_t format) {
if (format==IMGFMT_ZRMJPEGNI ||
format==IMGFMT_ZRMJPEGIT ||
format==IMGFMT_ZRMJPEGIB)
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
return 0;
}
static uint32_t draw_image(mp_image_t *mpi) {
vo_zr2_priv_t *p = &priv;
int size = (int)mpi->planes[1];
if (size > (int)p->zrq.size) {
ERROR("incoming JPEG image (size=%d) doesn't fit in buffer\n",
size);
return VO_FALSE;
}
/* looking for free buffer */
if (p->queue - p->sync < (int)p->zrq.count) p->frame = p->queue;
else {
if (ioctl(p->vdes, MJPIOC_SYNC, &p->zs) < 0) {
ERROR("error waiting for buffer to become free\n");
return VO_FALSE;
}
p->frame = p->zs.frame;
p->sync++;
}
/* copy the jpeg image to the buffer which we acquired */
memcpy(p->buf + p->zrq.size*p->frame, mpi->planes[0], size);
return VO_TRUE;
}
static char *normstring(int norm) {
switch (norm) {
case VIDEO_MODE_PAL:
return "PAL";
case VIDEO_MODE_NTSC:
return "NTSC";
case VIDEO_MODE_SECAM:
return "SECAM";
case VIDEO_MODE_AUTO:
return "auto";
}
return "undefined";
}
static uint32_t preinit(const char *arg) {
char *dev = NULL, *ptr = NULL, *tmp;
vo_zr2_priv_t *p = &priv;
int last = 0, norm = VIDEO_MODE_AUTO;
VERBOSE("preinit() called\n");
memset(p, 0, sizeof(*p)); /* set defaults */
p->vdes = -1;
if (arg) {
/* save subdevice string */
p->subdevice = strdup(arg);
if (!p->subdevice) {
ERROR("out of memory, this is bad\n");
uninit();
return 1;
}
tmp = ptr = p->subdevice;
do {
while (*tmp != ':' && *tmp) tmp++;
if (*tmp == ':') *tmp++ = '\0';
else last = 1;
DBG2("processing subdevice option \"%s\"\n", ptr);
if (!strncmp("dev=", ptr, 4)) {
dev = ptr + 4;
VERBOSE("user specified device \"%s\"\n", dev);
} else if (!strcasecmp("PAL", ptr)) {
norm = VIDEO_MODE_PAL;
VERBOSE("user specified video norm PAL\n");
} else if (!strcasecmp("SECAM", ptr)) {
norm = VIDEO_MODE_SECAM;
VERBOSE("user specified video norm SECAM\n");
} else if (!strcasecmp("NTSC", ptr)) {
norm = VIDEO_MODE_NTSC;
VERBOSE("user specified video norm NTSC\n");
} else if (!strcmp("prebuf", ptr)) {
WARNING("prebuffering is not yet supported\n");
} else {
WARNING("ignoring unknown subdevice option "
"\"%s\", or missing argument\n",
ptr);
}
ptr = tmp;
} while (!last);
}
dev = guess_device(dev);
if (!dev) {
uninit();
return 1;
}
p->vdes = open(dev, O_RDWR);
if (p->vdes < 0) {
ERROR("error opening %s: %s\n", dev, strerror(errno));
uninit();
return 1;
}
/* check if we really are dealing with a zoran card */
if (ioctl(p->vdes, MJPIOC_G_PARAMS, &p->zp) < 0) {
ERROR("%s probably is not a DC10(+)/buz/lml33\n", dev);
uninit();
return 1;
}
VERBOSE("kernel driver version %d.%d, current norm is %s\n",
p->zp.major_version, p->zp.minor_version,
normstring(p->zp.norm));
/* changing the norm in the zoran_params and MJPIOC_S_PARAMS
* does nothing the last time I tried, so bail out if the norm
* is not correct */
if (norm != VIDEO_MODE_AUTO && p->zp.norm != norm) {
ERROR("mplayer currently can't change the video norm, "
"change it with (eg.) XawTV and retry.\n");
uninit();
return 1;
}
/* gather useful information */
if (ioctl(p->vdes, VIDIOCGCAP, &p->vc) < 0) {
ERROR("error getting video capabilities from %s\n", dev);
uninit();
return 1;
}
VERBOSE("card reports maxwidth=%d, maxheight=%d\n",
p->vc.maxwidth, p->vc.maxheight);
/* according to the mjpegtools source, some cards return a bogus
* vc.maxwidth, correct it here. If a new zoran card appears with a
* maxwidth different 640, 720 or 768 this code may lead to problems */
if (p->vc.maxwidth != 640 && p->vc.maxwidth != 768) {
VERBOSE("card probably reported bogus width (%d), "
"changing to 720\n", p->vc.maxwidth);
p->vc.maxwidth = 720;
}
p->zrq.count = ZR2_MJPEG_NBUFFERS;
p->zrq.size = ZR2_MJPEG_SIZE;
if (ioctl(p->vdes, MJPIOC_REQBUFS, &p->zrq)) {
ERROR("error requesting %d buffers of size %d\n",
ZR2_MJPEG_NBUFFERS, ZR2_MJPEG_NBUFFERS);
uninit();
return 1;
}
VERBOSE("got %ld buffers of size %ld (wanted %d buffers of size %d)\n",
p->zrq.count, p->zrq.size, ZR2_MJPEG_NBUFFERS,
ZR2_MJPEG_SIZE);
p->buf = (unsigned char*)mmap(0, p->zrq.count*p->zrq.size,
PROT_READ|PROT_WRITE, MAP_SHARED, p->vdes, 0);
if (p->buf == MAP_FAILED) {
ERROR("error mapping requested buffers: %s", strerror(errno));
uninit();
return 1;
}
return 0;
}
static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width,
uint32_t d_height, uint32_t flags, char *title, uint32_t format) {
int fields = 1, top_first = 1, err = 0;
int stretchx = 1, stretchy = 1;
struct mjpeg_params zptmp;
vo_zr2_priv_t *p = &priv;
VERBOSE("config() called\n");
/* paranoia check */
if (!query_format(format)) {
ERROR("called with wrong format, should be impossible\n");
return 1;
}
if ((int)height > p->vc.maxheight) {
ERROR("input height %d is too large, maxheight=%d\n",
height, p->vc.maxheight);
err = 1;
}
if (format != IMGFMT_ZRMJPEGNI) {
fields = 2;
if (format == IMGFMT_ZRMJPEGIB)
top_first = 0;
} else if ((int)height > p->vc.maxheight/2) {
ERROR("input is too high (%d) for non-interlaced playback"
"max=%d\n", height, p->vc.maxheight);
err = 1;
}
if (width%16 != 0) {
ERROR("input width=%d, must be multiple of 16\n", width);
err = 1;
}
if (height%(fields*8) != 0) {
ERROR("input height=%d, must be multiple of %d\n",
height, 2*fields);
err = 1;
}
/* we assume sample_aspect = 1 */
if (fields == 1) {
if (2*d_width <= (uint32_t)p->vc.maxwidth) {
VERBOSE("stretching x direction to preserve aspect\n");
d_width *= 2;
} else VERBOSE("unable to preserve aspect, screen width "
"too small\n");
}
if (d_width == width) stretchx = 1;
else if (d_width == 2*width) stretchx = 2;
#if 0 /* do minimal stretching for now */
else if (d_width == 4*width) stretchx = 4;
else WARNING("d_width must be {1,2,4}*width, using defaults\n");
if (d_height == height) stretchy = 1;
else if (d_height == 2*height) stretchy = 2;
else if (d_height == 4*height) stretchy = 4;
else WARNING("d_height must be {1,2,4}*height, using defaults\n");
#endif
if (stretchx*width > (uint32_t)p->vc.maxwidth) {
ERROR("movie to be played is too wide, width=%d>maxwidth=%d\n",
width*stretchx, p->vc.maxwidth);
err = 1;
}
if (stretchy*height > (uint32_t)p->vc.maxheight) {
ERROR("movie to be played is too heigh, height=%d>maxheight"
"=%d\n", height*stretchy, p->vc.maxheight);
err = 1;
}
if (err == 1) return 1;
/* some video files (eg. concatenated MPEG files), make MPlayer
* call config() during playback while no parameters have changed.
* We make configuration changes to a temporary params structure,
* compare it with the old params structure and only apply the new
* config if it is different from the old one. */
memcpy(&zptmp, &p->zp, sizeof(zptmp));
/* translate the configuration to zoran understandable format */
zptmp.decimation = 0;
zptmp.HorDcm = stretchx;
zptmp.VerDcm = stretchy;
zptmp.TmpDcm = 1;
zptmp.field_per_buff = fields;
zptmp.odd_even = top_first;
/* center the image on screen */
zptmp.img_x = (p->vc.maxwidth - width*stretchx)/2;
zptmp.img_y = (p->vc.maxheight - height*stretchy*(3-fields))/4;
zptmp.img_width = stretchx*width;
zptmp.img_height = stretchy*height/fields;
VERBOSE("tv: %dx%d, out: %dx%d+%d+%d, in: %ux%u %s%s%s\n",
p->vc.maxwidth, p->vc.maxheight,
zptmp.img_width, 2*zptmp.img_height,
zptmp.img_x, 2*zptmp.img_y,
width, height, (fields == 1) ? "non-interlaced" : "",
(fields == 2 && top_first == 1)
? "interlaced top first" : "",
(fields == 2 && top_first == 0)
? "interlaced bottom first" : "");
if (memcmp(&zptmp, &p->zp, sizeof(zptmp))) {
/* config differs, we must update */
memcpy(&p->zp, &zptmp, sizeof(zptmp));
stop_playing(p);
if (ioctl(p->vdes, MJPIOC_S_PARAMS, &p->zp) < 0) {
ERROR("error writing display params to card\n");
return 1;
}
VERBOSE("successfully written display parameters to card\n");
} else VERBOSE("config didn't change, no need to write it to card\n");
return 0;
}
static uint32_t control(uint32_t request, void *data, ...) {
switch (request) {
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
case VOCTRL_DRAW_IMAGE:
return draw_image(data);
}
return VO_NOTIMPL;
}
static uint32_t draw_frame(uint8_t *src[]) {
return 0;
}
static uint32_t draw_slice(uint8_t *image[], int stride[],
int w, int h, int x, int y) {
return 0;
}
static void draw_osd(void) {
}
static void flip_page(void) {
vo_zr2_priv_t *p = &priv;
/* queueing the buffer for playback */
/* queueing the first buffer automatically starts playback */
if (p->playing == 0) p->playing = 1;
if (ioctl(p->vdes, MJPIOC_QBUF_PLAY, &p->frame) < 0)
ERROR("error queueing buffer for playback\n");
else p->queue++;
}
static void check_events(void) {
}
static void uninit(void) {
vo_zr2_priv_t *p = &priv;
VERBOSE("uninit() called (may be called from preinit() on error)\n");
stop_playing(p);
if (p->buf && munmap(p->buf, p->zrq.size*p->zrq.count))
ERROR("error munmapping buffer: %s\n", strerror(errno));
if (p->vdes >= 0) close(p->vdes);
free(p->subdevice);
}