From e07e36bbe4e605aff64f68e28cefe7676308c83f Mon Sep 17 00:00:00 2001 From: henry Date: Thu, 7 Aug 2003 12:18:04 +0000 Subject: v4l2 support git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10537 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpdemux/tvi_v4l2.c | 1622 ++++++++++++++++++++++++++++++++++++++++++++++++ libmpdemux/videodev2.h | 862 +++++++++++++++++++++++++ 2 files changed, 2484 insertions(+) create mode 100644 libmpdemux/tvi_v4l2.c create mode 100644 libmpdemux/videodev2.h (limited to 'libmpdemux') diff --git a/libmpdemux/tvi_v4l2.c b/libmpdemux/tvi_v4l2.c new file mode 100644 index 0000000000..f537195544 --- /dev/null +++ b/libmpdemux/tvi_v4l2.c @@ -0,0 +1,1622 @@ +/* +** Video 4 Linux 2 input +** +** This file is part of MPlayer, see http://mplayerhq.hu/ for info. +** +** (c) 2003 Martin Olschewski +** (c) 2003 Jindrich Makovicka +** +** File licensed under the GPL, see http://www.fsf.org/ for more info. +** +** Some ideas are based on works from +** Alex Beregszaszi +** Gerd Knorr +** +** CODE IS UNDER DEVELOPMENT, NO FEATURE REQUESTS PLEASE! +*/ + +/* + +known issues: +- norm setting isn't consistent with tvi_v4l +- the same for volume/bass/treble/balance + +*/ + +#include "config.h" + +#if defined(USE_TV) && defined(HAVE_TV_V4L2) + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef HAVE_SYS_SYSINFO_H +#include +#endif +#include "videodev2.h" +#include "../mp_msg.h" +#include "../libvo/img_format.h" +#include "../libao2/afmt.h" +#include "tv.h" +#include "audio_in.h" + +/* information about this file */ +static tvi_info_t info = { + "Video 4 Linux 2 input", + "v4l2", + "Martin Olschewski ", + "first try, more to come ;-)" +}; + +struct map { + struct v4l2_buffer buf; + void *addr; + size_t len; +}; + +#define BUFFER_COUNT 6 + +/* private data */ +typedef struct { + /* video */ + char *video_dev; + int video_fd; + int mp_format; + struct v4l2_capability capability; + struct v4l2_input input; + struct v4l2_format format; + struct v4l2_standard standard; + struct v4l2_tuner tuner; + struct map *map; + int mapcount; + int frames; + long long first_frame; + long long curr_frame; + /* audio video interleaving ;-) */ + volatile int streamon; + pthread_t audio_grabber_thread; + pthread_mutex_t skew_mutex; + + /* 2nd level video buffers */ + int first; + int immediate_mode; + + int video_buffer_size_max; + volatile int video_buffer_size_current; + unsigned char **video_ringbuffer; + long long *video_timebuffer; + volatile int video_head; + volatile int video_tail; + volatile int video_cnt; + pthread_t video_grabber_thread; + pthread_mutex_t video_buffer_mutex; + + /* audio */ + char *audio_dev; + audio_in_t audio_in; + + long long audio_start_time; + int audio_buffer_size; + int aud_skew_cnt; + unsigned char *audio_ringbuffer; + long long *audio_skew_buffer; + volatile int audio_head; + volatile int audio_tail; + volatile int audio_cnt; + volatile long long audio_skew; + volatile double audio_skew_factor; + volatile long long audio_skew_measure_time; + volatile int audio_drop; + volatile int shutdown; + + double audio_secs_per_block; + long long audio_skew_total; + long audio_recv_blocks_total; + long audio_sent_blocks_total; +} priv_t; + +#include "tvi_def.h" + +static void *audio_grabber(void *data); +static void *video_grabber(void *data); + +/**********************************************************************\ + + Only few of the fourccs are the same in v4l2 and mplayer: + + IMGFMT_YVU9 == V4L2_PIX_FMT_YVU410 + IMGFMT_YV12 == V4L2_PIX_FMT_YVU420 + IMGFMT_NV12 == V4L2_PIX_FMT_NV12 + IMGFMT_422P == V4L2_PIX_FMT_YUV422P + IMGFMT_411P == V4L2_PIX_FMT_YUV411P + IMGFMT_UYVY == V4L2_PIX_FMT_UYVY + IMGFMT_Y41P == V4L2_PIX_FMT_Y41P + + This may be an useful translation table for some others: + + IMGFMT_RGB8 == V4L2_PIX_FMT_RGB332 + IMGFMT_RGB15 == V4L2_PIX_FMT_RGB555 + IMGFMT_RGB16 == V4L2_PIX_FMT_RGB565 + IMGFMT_RGB24 == V4L2_PIX_FMT_RGB24 + IMGFMT_RGB32 == V4L2_PIX_FMT_RGB32 + IMGFMT_BGR24 == V4L2_PIX_FMT_BGR24 + IMGFMT_BGR32 == V4L2_PIX_FMT_BGR32 + IMGFMT_Y800 == V4L2_PIX_FMT_GREY + IMGFMT_IF09 == V4L2_PIX_FMT_YUV410 + IMGFMT_I420 == V4L2_PIX_FMT_YUV420 + IMGFMT_YUY2 == V4L2_PIX_FMT_YUYV + +\**********************************************************************/ + +/* +** Translate a mplayer fourcc to a video4linux2 pixel format. +*/ +static int fcc_mp2vl(int fcc) +{ + switch (fcc) { + case IMGFMT_RGB8: return V4L2_PIX_FMT_RGB332; + case IMGFMT_RGB15: return V4L2_PIX_FMT_RGB555; + case IMGFMT_RGB16: return V4L2_PIX_FMT_RGB565; + case IMGFMT_RGB24: return V4L2_PIX_FMT_RGB24; + case IMGFMT_RGB32: return V4L2_PIX_FMT_RGB32; + case IMGFMT_BGR24: return V4L2_PIX_FMT_BGR24; + case IMGFMT_BGR32: return V4L2_PIX_FMT_BGR32; + case IMGFMT_Y800: return V4L2_PIX_FMT_GREY; + case IMGFMT_IF09: return V4L2_PIX_FMT_YUV410; + case IMGFMT_I420: return V4L2_PIX_FMT_YUV420; + case IMGFMT_YUY2: return V4L2_PIX_FMT_YUYV; + case IMGFMT_YV12: return V4L2_PIX_FMT_YUV420; + } + return fcc; +} + +/* +** Translate a video4linux2 fourcc aka pixel format to mplayer. +*/ +static int fcc_vl2mp(int fcc) +{ + switch (fcc) { + case V4L2_PIX_FMT_RGB332: return IMGFMT_RGB8; + case V4L2_PIX_FMT_RGB555: return IMGFMT_RGB15; + case V4L2_PIX_FMT_RGB565: return IMGFMT_RGB16; + case V4L2_PIX_FMT_RGB24: return IMGFMT_RGB24; + case V4L2_PIX_FMT_RGB32: return IMGFMT_RGB32; + case V4L2_PIX_FMT_BGR24: return IMGFMT_BGR24; + case V4L2_PIX_FMT_BGR32: return IMGFMT_BGR32; + case V4L2_PIX_FMT_GREY: return IMGFMT_Y800; + case V4L2_PIX_FMT_YUV410: return IMGFMT_IF09; + case V4L2_PIX_FMT_YUV420: return IMGFMT_I420; + case V4L2_PIX_FMT_YUYV: return IMGFMT_YUY2; + } + return fcc; +} + +/* +** Translate a video4linux2 fourcc aka pixel format +** to a human readable string. +*/ +static char *pixfmt2name(int pixfmt) +{ + static char unknown[24]; + + switch (pixfmt) { + case V4L2_PIX_FMT_RGB332: return "RGB332"; + case V4L2_PIX_FMT_RGB555: return "RGB555"; + case V4L2_PIX_FMT_RGB565: return "RGB565"; + case V4L2_PIX_FMT_RGB555X: return "RGB555X"; + case V4L2_PIX_FMT_RGB565X: return "RGB565X"; + case V4L2_PIX_FMT_BGR24: return "BGR24"; + case V4L2_PIX_FMT_RGB24: return "RGB24"; + case V4L2_PIX_FMT_BGR32: return "BGR32"; + case V4L2_PIX_FMT_RGB32: return "RGB32"; + case V4L2_PIX_FMT_GREY: return "GREY"; + case V4L2_PIX_FMT_YVU410: return "YVU410"; + case V4L2_PIX_FMT_YVU420: return "YVU420"; + case V4L2_PIX_FMT_YUYV: return "YUYV"; + case V4L2_PIX_FMT_UYVY: return "UYVY"; +/* case V4L2_PIX_FMT_YVU422P: return "YVU422P"; */ +/* case V4L2_PIX_FMT_YVU411P: return "YVU411P"; */ + case V4L2_PIX_FMT_YUV422P: return "YUV422P"; + case V4L2_PIX_FMT_YUV411P: return "YUV411P"; + case V4L2_PIX_FMT_Y41P: return "Y41P"; + case V4L2_PIX_FMT_NV12: return "NV12"; + case V4L2_PIX_FMT_NV21: return "NV21"; + case V4L2_PIX_FMT_YUV410: return "YUV410"; + case V4L2_PIX_FMT_YUV420: return "YUV420"; + case V4L2_PIX_FMT_YYUV: return "YYUV"; + case V4L2_PIX_FMT_HI240: return "HI240"; + case V4L2_PIX_FMT_WNVA: return "WNVA"; + } + sprintf(unknown, "unknown (0x%x)", pixfmt); + return unknown; +} + + +/* +** Gives the depth of a video4linux2 fourcc aka pixel format in bits. +*/ +static int pixfmt2depth(int pixfmt) +{ + switch (pixfmt) { + case V4L2_PIX_FMT_RGB332: + return 8; + case V4L2_PIX_FMT_RGB555: + case V4L2_PIX_FMT_RGB565: + case V4L2_PIX_FMT_RGB555X: + case V4L2_PIX_FMT_RGB565X: + return 16; + case V4L2_PIX_FMT_BGR24: + case V4L2_PIX_FMT_RGB24: + return 24; + case V4L2_PIX_FMT_BGR32: + case V4L2_PIX_FMT_RGB32: + return 32; + case V4L2_PIX_FMT_GREY: + return 8; + case V4L2_PIX_FMT_YVU410: + return 9; + case V4L2_PIX_FMT_YVU420: + return 12; + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_UYVY: + case V4L2_PIX_FMT_YUV422P: + case V4L2_PIX_FMT_YUV411P: + return 16; + case V4L2_PIX_FMT_Y41P: + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_NV21: + return 12; + case V4L2_PIX_FMT_YUV410: + return 9; + case V4L2_PIX_FMT_YUV420: + return 12; + case V4L2_PIX_FMT_YYUV: + return 16; + case V4L2_PIX_FMT_HI240: + return 8; + + } + return 0; +} + +static int amode2v4l(int amode) +{ + switch (amode) { + case 0: + return V4L2_TUNER_MODE_MONO; + case 1: + return V4L2_TUNER_MODE_STEREO; + case 2: + return V4L2_TUNER_MODE_LANG1; + case 3: + return V4L2_TUNER_MODE_LANG2; + default: + return -1; + } +} + + +// sets and sanitizes audio buffer/block sizes +static void setup_audio_buffer_sizes(priv_t *priv) +{ + int bytes_per_sample = priv->audio_in.bytes_per_sample; + double fps = priv->standard.frameperiod.denominator / + priv->standard.frameperiod.numerator; + int seconds = priv->video_buffer_size_max/fps; + + if (seconds < 5) seconds = 5; + if (seconds > 500) seconds = 500; + + // make the audio buffer at least as the video buffer capacity (or 5 seconds) long + priv->audio_buffer_size = 1 + seconds*priv->audio_in.samplerate + *priv->audio_in.channels + *bytes_per_sample/priv->audio_in.blocksize; + if (priv->audio_buffer_size < 256) priv->audio_buffer_size = 256; + + // make the skew buffer at least 1 second long + priv->aud_skew_cnt = 1 + 1*priv->audio_in.samplerate + *priv->audio_in.channels + *bytes_per_sample/priv->audio_in.blocksize; + if (priv->aud_skew_cnt < 16) priv->aud_skew_cnt = 16; + + mp_msg(MSGT_TV, MSGL_V, "Audio capture - buffer %d blocks of %d bytes, skew average from %d meas.\n", + priv->audio_buffer_size, priv->audio_in.blocksize, priv->aud_skew_cnt); +} + +#if 0 +/* +** the number of milliseconds elapsed between time0 and time1 +*/ +static size_t difftv(struct timeval time1, struct timeval time0) +{ + return (time1.tv_sec - time0.tv_sec) * 1000 + + (time1.tv_usec - time0.tv_usec) / 1000; +} +#endif + +/* +** Get current video capture format. +*/ +static int getfmt(priv_t *priv) +{ + int i; + + priv->format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + if ((i = ioctl(priv->video_fd, VIDIOC_G_FMT, &priv->format)) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl get format failed: %s\n", + info.short_name, strerror(errno)); + } + return i; +} + + +/* +** Get current video capture standard. +*/ +static int getstd(priv_t *priv) +{ + v4l2_std_id id; + int i=0; + + if (ioctl(priv->video_fd, VIDIOC_G_STD, &id) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl get standard failed: %s\n", + info.short_name, strerror(errno)); + return -1; + } + do { + priv->standard.index = i++; + if (ioctl(priv->video_fd, VIDIOC_ENUMSTD, &priv->standard) < 0) { + return -1; + } + } while (priv->standard.id != id); + return 0; +} + +/***********************************************************************\ + * * + * * + * Interface to mplayer * + * * + * * +\***********************************************************************/ + +static int set_mute(priv_t *priv, int value) +{ + struct v4l2_control control; + control.id = V4L2_CID_AUDIO_MUTE; + control.value = value; + if (ioctl(priv->video_fd, VIDIOC_S_CTRL, &control) < 0) { + mp_msg(MSGT_TV,MSGL_ERR,"%s: ioctl set mute failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + return 1; +} + +/* +** Mplayer uses values from -100 up to 100 for controls. +** Here they are scaled to what the tv card needs and applied. +*/ +static int set_control(priv_t *priv, struct v4l2_control *control, int val_signed) { + struct v4l2_queryctrl qctrl; + + qctrl.id = control->id; + if (ioctl(priv->video_fd, VIDIOC_QUERYCTRL, &qctrl) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl query control failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + + if (val_signed) { + if (control->value < 0) { + control->value = qctrl.default_value + control->value * + (qctrl.default_value - qctrl.minimum) / 100; + } else { + control->value = qctrl.default_value + control->value * + (qctrl.maximum - qctrl.default_value) / 100; + } + } else { + if (control->value < 50) { + control->value = qctrl.default_value + (control->value-50) * + (qctrl.default_value - qctrl.minimum) / 50; + } else { + control->value = qctrl.default_value + (control->value-50) * + (qctrl.maximum - qctrl.default_value) / 50; + } + } + + + if (ioctl(priv->video_fd, VIDIOC_S_CTRL, control) < 0) { + mp_msg(MSGT_TV, MSGL_ERR,"%s: ioctl set %s %d failed: %s\n", + info.short_name, qctrl.name, control->value, strerror(errno)); + return TVI_CONTROL_FALSE; + } + mp_msg(MSGT_TV, MSGL_V, "%s: set %s: %d [%d, %d]\n", info.short_name, + qctrl.name, control->value, qctrl.minimum, qctrl.maximum); + + return TVI_CONTROL_TRUE; +} + + +/* +** Scale the control values back to what mplayer needs. +*/ +static int get_control(priv_t *priv, struct v4l2_control *control, int val_signed) { + struct v4l2_queryctrl qctrl; + + qctrl.id = control->id; + if (ioctl(priv->video_fd, VIDIOC_QUERYCTRL, &qctrl) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl query control failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + + if (ioctl(priv->video_fd, VIDIOC_G_CTRL, control) < 0) { + mp_msg(MSGT_TV, MSGL_ERR,"%s: ioctl get %s failed: %s\n", + info.short_name, qctrl.name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + mp_msg(MSGT_TV, MSGL_V, "%s: get %s: %d [%d, %d]\n", info.short_name, + qctrl.name, control->value, qctrl.minimum, qctrl.maximum); + + if (val_signed) { + if (control->value < qctrl.default_value) { + control->value = (control->value - qctrl.default_value) * 100 / + (qctrl.default_value - qctrl.minimum); + } else { + control->value = (control->value - qctrl.default_value) * 100 / + (qctrl.maximum - qctrl.default_value); + } + } else { + if (control->value < qctrl.default_value) { + control->value = (control->value - qctrl.default_value) * 50 / + (qctrl.default_value - qctrl.minimum) + 50; + } else { + control->value = (control->value - qctrl.default_value) * 50 / + (qctrl.maximum - qctrl.default_value) + 50; + } + } + + return TVI_CONTROL_TRUE; +} + +static int control(priv_t *priv, int cmd, void *arg) +{ + struct v4l2_control control; + struct v4l2_frequency frequency; + + switch(cmd) { + case TVI_CONTROL_IS_AUDIO: + if (tv_param_force_audio) return TVI_CONTROL_TRUE; + return priv->input.audioset ? TVI_CONTROL_TRUE: TVI_CONTROL_FALSE; + case TVI_CONTROL_IS_VIDEO: + return priv->capability.capabilities & V4L2_CAP_VIDEO_CAPTURE? + TVI_CONTROL_TRUE: TVI_CONTROL_FALSE; + case TVI_CONTROL_IS_TUNER: + return priv->capability.capabilities & V4L2_CAP_TUNER? + TVI_CONTROL_TRUE: TVI_CONTROL_FALSE; + case TVI_CONTROL_IMMEDIATE: + priv->immediate_mode = 1; + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_GET_FPS: + *(float *)arg = priv->standard.frameperiod.denominator / + priv->standard.frameperiod.numerator; + mp_msg(MSGT_TV, MSGL_V, "%s: get fps: %f\n", info.short_name, + *(float *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_GET_BITS: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + *(int *)arg = pixfmt2depth(priv->format.fmt.pix.pixelformat); + mp_msg(MSGT_TV, MSGL_V, "%s: get depth: %d\n", info.short_name, + *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_GET_FORMAT: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + if (priv->mp_format == IMGFMT_YV12 && priv->format.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) { + *(int *)arg = IMGFMT_YV12; + } else { + *(int *)arg = fcc_vl2mp(priv->format.fmt.pix.pixelformat); + } + mp_msg(MSGT_TV, MSGL_V, "%s: get format: %s\n", info.short_name, + pixfmt2name(priv->format.fmt.pix.pixelformat)); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_SET_FORMAT: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + priv->format.fmt.pix.pixelformat = fcc_mp2vl(*(int *)arg); + priv->format.fmt.pix.field = V4L2_FIELD_ANY; + + priv->mp_format = *(int *)arg; + mp_msg(MSGT_TV, MSGL_V, "%s: set format: %s\n", info.short_name, + pixfmt2name(priv->format.fmt.pix.pixelformat)); + if (ioctl(priv->video_fd, VIDIOC_S_FMT, &priv->format) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set format failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_GET_WIDTH: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + *(int *)arg = priv->format.fmt.pix.width; + mp_msg(MSGT_TV, MSGL_V, "%s: get width: %d\n", info.short_name, + *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_CHK_WIDTH: + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_SET_WIDTH: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + priv->format.fmt.pix.width = *(int *)arg; + mp_msg(MSGT_TV, MSGL_V, "%s: set width: %d\n", info.short_name, + *(int *)arg); + if (ioctl(priv->video_fd, VIDIOC_S_FMT, &priv->format) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set width failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_GET_HEIGHT: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + *(int *)arg = priv->format.fmt.pix.height; + mp_msg(MSGT_TV, MSGL_V, "%s: get height: %d\n", info.short_name, + *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_CHK_HEIGHT: + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_SET_HEIGHT: + if (getfmt(priv) < 0) return TVI_CONTROL_FALSE; + priv->format.fmt.pix.height = *(int *)arg; + mp_msg(MSGT_TV, MSGL_V, "%s: set height: %d\n", info.short_name, + *(int *)arg); + if (ioctl(priv->video_fd, VIDIOC_S_FMT, &priv->format) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set height failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_VID_GET_BRIGHTNESS: + control.id = V4L2_CID_BRIGHTNESS; + if (get_control(priv, &control, 1) == TVI_CONTROL_TRUE) { + *(int *)arg = control.value; + return TVI_CONTROL_TRUE; + } + return TVI_CONTROL_FALSE; + case TVI_CONTROL_VID_SET_BRIGHTNESS: + control.id = V4L2_CID_BRIGHTNESS; + control.value = *(int *)arg; + return set_control(priv, &control, 1); + case TVI_CONTROL_VID_GET_HUE: + control.id = V4L2_CID_HUE; + if (get_control(priv, &control, 1) == TVI_CONTROL_TRUE) { + *(int *)arg = control.value; + return TVI_CONTROL_TRUE; + } + return TVI_CONTROL_FALSE; + case TVI_CONTROL_VID_SET_HUE: + control.id = V4L2_CID_HUE; + control.value = *(int *)arg; + return set_control(priv, &control, 1); + case TVI_CONTROL_VID_GET_SATURATION: + control.id = V4L2_CID_SATURATION; + if (get_control(priv, &control, 1) == TVI_CONTROL_TRUE) { + *(int *)arg = control.value; + return TVI_CONTROL_TRUE; + } + return TVI_CONTROL_FALSE; + case TVI_CONTROL_VID_SET_SATURATION: + control.id = V4L2_CID_SATURATION; + control.value = *(int *)arg; + return set_control(priv, &control, 1); + case TVI_CONTROL_VID_GET_CONTRAST: + control.id = V4L2_CID_CONTRAST; + if (get_control(priv, &control, 1) == TVI_CONTROL_TRUE) { + *(int *)arg = control.value; + return TVI_CONTROL_TRUE; + } + return TVI_CONTROL_FALSE; + case TVI_CONTROL_VID_SET_CONTRAST: + control.id = V4L2_CID_CONTRAST; + control.value = *(int *)arg; + return set_control(priv, &control, 1); + case TVI_CONTROL_TUN_GET_FREQ: + frequency.tuner = 0; + frequency.type = V4L2_TUNER_ANALOG_TV; + if (ioctl(priv->video_fd, VIDIOC_G_FREQUENCY, &frequency) < 0) { + mp_msg(MSGT_TV,MSGL_ERR,"%s: ioctl get frequency failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + *(int *)arg = frequency.frequency; + return TVI_CONTROL_TRUE; + case TVI_CONTROL_TUN_SET_FREQ: +#if 0 + if (priv->input.audioset) { + set_mute(priv, 1); + usleep(100000); // wait to supress noise during switching + } +#endif + frequency.tuner = 0; + frequency.type = V4L2_TUNER_ANALOG_TV; + frequency.frequency = *(int *)arg; + if (ioctl(priv->video_fd, VIDIOC_S_FREQUENCY, &frequency) < 0) { + mp_msg(MSGT_TV,MSGL_ERR,"%s: ioctl set frequency failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } +#if 0 + if (priv->input.audioset) { + usleep(100000); // wait to supress noise during switching + set_mute(priv, 0); + } +#endif + return TVI_CONTROL_TRUE; + case TVI_CONTROL_TUN_GET_TUNER: + mp_msg(MSGT_TV, MSGL_V, "%s: get tuner\n"); + if (ioctl(priv->video_fd, VIDIOC_G_TUNER, &priv->tuner) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl get tuner failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_TUN_SET_TUNER: + mp_msg(MSGT_TV, MSGL_V, "%s: set tuner\n"); + if (ioctl(priv->video_fd, VIDIOC_S_TUNER, &priv->tuner) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set tuner failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_TUN_GET_NORM: + *(int *)arg = priv->standard.index; + return TVI_CONTROL_TRUE; + case TVI_CONTROL_TUN_SET_NORM: + priv->standard.index = *(int *)arg; + if (ioctl(priv->video_fd, VIDIOC_ENUMSTD, &priv->standard) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl enum norm failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + mp_msg(MSGT_TV, MSGL_V, "%s: set norm: %s\n", info.short_name, priv->standard.name); + if (ioctl(priv->video_fd, VIDIOC_S_STD, &priv->standard.id) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set norm failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_SPC_GET_INPUT: + if (ioctl(priv->video_fd, VIDIOC_G_INPUT, (int *)arg) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl get input failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_SPC_SET_INPUT: + mp_msg(MSGT_TV, MSGL_V, "%s: set input: %d\n", info.short_name, *(int *)arg); + priv->input.index = *(int *)arg; + if (ioctl(priv->video_fd, VIDIOC_ENUMINPUT, &priv->input) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl enum input failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + if (ioctl(priv->video_fd, VIDIOC_S_INPUT, (int *)arg) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set input failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + return TVI_CONTROL_TRUE; + case TVI_CONTROL_AUD_GET_FORMAT: + *(int *)arg = AFMT_S16_LE; + mp_msg(MSGT_TV, MSGL_V, "%s: get audio format: %d\n", + info.short_name, *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_AUD_GET_SAMPLERATE: + *(int *)arg = priv->audio_in.samplerate; + mp_msg(MSGT_TV, MSGL_V, "%s: get audio samplerate: %d\n", + info.short_name, *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_AUD_GET_SAMPLESIZE: + *(int *)arg = priv->audio_in.bytes_per_sample;; + mp_msg(MSGT_TV, MSGL_V, "%s: get audio samplesize: %d\n", + info.short_name, *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_AUD_GET_CHANNELS: + *(int *)arg = priv->audio_in.channels; + mp_msg(MSGT_TV, MSGL_V, "%s: get audio channels: %d\n", + info.short_name, *(int *)arg); + return TVI_CONTROL_TRUE; + case TVI_CONTROL_AUD_SET_SAMPLERATE: + mp_msg(MSGT_TV, MSGL_V, "%s: set audio samplerate: %d\n", + info.short_name, *(int *)arg); + if (audio_in_set_samplerate(&priv->audio_in, (int)*(void **)arg) < 0) return TVI_CONTROL_FALSE; +// setup_audio_buffer_sizes(priv); + return TVI_CONTROL_TRUE; + } + mp_msg(MSGT_TV, MSGL_V, "%s: unknown control: %d\n", info.short_name, cmd); + return(TVI_CONTROL_UNKNOWN); +} + + +#define PRIV ((priv_t *) (tvi_handle->priv)) + +/* handler creator - entry point ! */ +tvi_handle_t *tvi_init_v4l2(char *video_dev, char *audio_dev) +{ + tvi_handle_t *tvi_handle; + + /* new_handle initializes priv with memset 0 */ + tvi_handle = new_handle(); + if (!tvi_handle) { + return NULL; + } + PRIV->video_fd = -1; + + PRIV->video_dev = strdup(video_dev? video_dev: "/dev/video"); + if (!PRIV->video_dev) { + free_handle(tvi_handle); + return NULL; + } + + if (audio_dev) { + PRIV->audio_dev = strdup(audio_dev); + if (!PRIV->audio_dev) { + free(PRIV->video_dev); + free_handle(tvi_handle); + return NULL; + } + } + + return tvi_handle; +} + +#undef PRIV + + +static int uninit(priv_t *priv) +{ + int i, frames, dropped = 0; + + priv->shutdown = 1; + pthread_join(priv->audio_grabber_thread, NULL); + pthread_mutex_destroy(&priv->video_buffer_mutex); + + if (priv->streamon) { + struct v4l2_buffer buf; + + /* get performance */ + frames = 1 + (priv->curr_frame - priv->first_frame) * + priv->standard.frameperiod.denominator / + priv->standard.frameperiod.numerator / 1000000; + dropped = frames - priv->frames; + + /* turn off streaming */ + if (ioctl(priv->video_fd, VIDIOC_STREAMOFF, &(priv->map[0].buf.type)) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl streamoff failed: %s\n", + info.short_name, strerror(errno)); + } + priv->streamon = 0; + + /* unqueue all remaining buffers */ + memset(&buf,0,sizeof(buf)); + buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + while (!ioctl(priv->video_fd, VIDIOC_DQBUF, &buf)); + } + + /* unmap all buffers */ + for (i = 0; i < priv->mapcount; i++) { + if (munmap(priv->map[i].addr, priv->map[i].len) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: munmap capture buffer failed: %s\n", + info.short_name, strerror(errno)); + } + } + + /* stop audio thread */ + if (!tv_param_noaudio) { + pthread_join(priv->audio_grabber_thread, NULL); + pthread_mutex_destroy(&priv->skew_mutex); + } + + if (priv->input.audioset) { + set_mute(priv, 1); + } + + /* free memory and close device */ + free(priv->map); priv->map = NULL; + priv->mapcount = 0; + close(priv->video_fd); priv->video_fd = -1; + free(priv->video_dev); priv->video_dev = NULL; + + if (priv->video_ringbuffer) { + int i; + for (i = 0; i < priv->video_buffer_size_current; i++) { + free(priv->video_ringbuffer[i]); + } + free(priv->video_ringbuffer); + } + if (priv->video_timebuffer) + free(priv->video_timebuffer); + if (!tv_param_noaudio) { + if (priv->audio_ringbuffer) + free(priv->audio_ringbuffer); + if (priv->audio_skew_buffer) + free(priv->audio_skew_buffer); + } + + /* show some nice statistics ;-) */ + mp_msg(MSGT_TV, MSGL_INFO, + "%s: %d frames successfully processed, %d frames dropped.\n", + info.short_name, priv->frames, dropped); + mp_msg(MSGT_TV, MSGL_V, "%s: up to %u video frames buffered.\n", + info.short_name, priv->video_buffer_size_current); + return 1; +} + + +/* initialisation */ +static int init(priv_t *priv) +{ + int i; + + if (tv_param_immediate == 1) + tv_param_noaudio = 1; + + priv->audio_ringbuffer = NULL; + priv->audio_skew_buffer = NULL; + + /* Open the video device. */ + priv->video_fd = open(priv->video_dev, O_RDWR); + if (priv->video_fd < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: unable to open '%s': %s\n", + info.short_name, priv->video_dev, strerror(errno)); + uninit(priv); + return 0; + } + mp_msg(MSGT_TV, MSGL_DBG2, "%s: video fd: %s: %d\n", + info.short_name, priv->video_dev, priv->video_fd); + + /* + ** Query the video capabilities and current settings + ** for further control calls. + */ + if (ioctl(priv->video_fd, VIDIOC_QUERYCAP, &priv->capability) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl query capabilities failed: %s\n", + info.short_name, strerror(errno)); + uninit(priv); + return 0; + } + + if (!(priv->capability.capabilities & V4L2_CAP_VIDEO_CAPTURE)) + { + mp_msg(MSGT_TV, MSGL_ERR, "Device %s is not a video capture device.\n", + priv->video_dev); + return 0; + } + + if (getfmt(priv) < 0 || getstd(priv) < 0) { + uninit(priv); + return 0; + } + /* + ** if this device has got a tuner query it's settings + ** otherwise set some nice defaults + */ + if (priv->capability.capabilities & V4L2_CAP_TUNER) { + if (ioctl(priv->video_fd, VIDIOC_G_TUNER, &priv->tuner) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl get tuner failed: %s\n", + info.short_name, strerror(errno)); + uninit(priv); + return 0; + } + } + mp_msg(MSGT_TV, MSGL_INFO, "Selected device: %s\n", priv->capability.card); + if (priv->capability.capabilities & V4L2_CAP_TUNER) { + mp_msg(MSGT_TV, MSGL_INFO, " Tuner cap:%s%s%s\n", + (priv->tuner.capability & V4L2_TUNER_CAP_STEREO) ? " STEREO" : "", + (priv->tuner.capability & V4L2_TUNER_CAP_LANG1) ? " LANG1" : "", + (priv->tuner.capability & V4L2_TUNER_CAP_LANG2) ? " LANG2" : ""); + mp_msg(MSGT_TV, MSGL_INFO, " Tuner rxs:%s%s%s%s\n", + (priv->tuner.rxsubchans & V4L2_TUNER_SUB_MONO) ? " MONO" : "", + (priv->tuner.rxsubchans & V4L2_TUNER_SUB_STEREO) ? " STEREO" : "", + (priv->tuner.rxsubchans & V4L2_TUNER_SUB_LANG1) ? " LANG1" : "", + (priv->tuner.rxsubchans & V4L2_TUNER_SUB_LANG2) ? " LANG2" : ""); + } + mp_msg(MSGT_TV, MSGL_INFO, " Capabilites:%s%s%s%s%s%s%s%s%s%s%s\n", + priv->capability.capabilities & V4L2_CAP_VIDEO_CAPTURE? + " video capture": "", + priv->capability.capabilities & V4L2_CAP_VIDEO_OUTPUT? + " video output": "", + priv->capability.capabilities & V4L2_CAP_VIDEO_OVERLAY? + " video overlay": "", + priv->capability.capabilities & V4L2_CAP_VBI_CAPTURE? + " VBI capture device": "", + priv->capability.capabilities & V4L2_CAP_VBI_OUTPUT? + " VBI output": "", + priv->capability.capabilities & V4L2_CAP_RDS_CAPTURE? + " RDS data capture": "", + priv->capability.capabilities & V4L2_CAP_TUNER? + " tuner": "", + priv->capability.capabilities & V4L2_CAP_AUDIO? + " audio": "", + priv->capability.capabilities & V4L2_CAP_READWRITE? + " read/write": "", + priv->capability.capabilities & V4L2_CAP_ASYNCIO? + " async i/o": "", + priv->capability.capabilities & V4L2_CAP_STREAMING? + " streaming": ""); + mp_msg(MSGT_TV, MSGL_INFO, " supported norms:"); + for (i = 0;; i++) { + struct v4l2_standard standard; + memset(&standard, 0, sizeof(standard)); + standard.index = i; + if (-1 == ioctl(priv->video_fd, VIDIOC_ENUMSTD, &standard)) + break; + printf(" %d = %s;", i, standard.name); + } + mp_msg(MSGT_TV, MSGL_INFO, "\n inputs:"); + for (i = 0; 1; i++) { + struct v4l2_input input; + + input.index = i; + if (ioctl(priv->video_fd, VIDIOC_ENUMINPUT, &input) < 0) { + break; + } + mp_msg(MSGT_TV, MSGL_INFO, " %d = %s;", i, input.name); + } + if (ioctl(priv->video_fd, VIDIOC_G_INPUT, &i) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl get input failed: %s\n", + info.short_name, strerror(errno)); + } + mp_msg(MSGT_TV, MSGL_INFO, "\n Current input: %d\n", i); + for (i = 0; ; i++) { + struct v4l2_fmtdesc fmtdesc; + + fmtdesc.index = i; + fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + if (ioctl(priv->video_fd, VIDIOC_ENUM_FMT, &fmtdesc) < 0) { + break; + } + mp_msg(MSGT_TV, MSGL_V, " Format %-6s (%2d bits, %s): %s\n", + pixfmt2name(fmtdesc.pixelformat), pixfmt2depth(fmtdesc.pixelformat), + fmtdesc.description, vo_format_name(fcc_vl2mp(fmtdesc.pixelformat))); + } + mp_msg(MSGT_TV, MSGL_INFO, " Current format: %s\n", + pixfmt2name(priv->format.fmt.pix.pixelformat)); + + /* set some nice defaults */ + if (getfmt(priv) < 0) return 0; + priv->format.fmt.pix.width = 640; + priv->format.fmt.pix.height = 480; + if (ioctl(priv->video_fd, VIDIOC_S_FMT, &priv->format) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set format failed: %s\n", + info.short_name, strerror(errno)); + uninit(priv); + return 0; + } + +// if (!(priv->capability.capabilities & V4L2_CAP_AUDIO) && !tv_param_force_audio) tv_param_noaudio = 1; + + if (priv->capability.capabilities & V4L2_CAP_TUNER) { + struct v4l2_control control; + if (tv_param_amode >= 0) { + mp_msg(MSGT_TV, MSGL_V, "%s: setting audio mode\n", info.short_name); + priv->tuner.audmode = amode2v4l(tv_param_amode); + if (ioctl(priv->video_fd, VIDIOC_S_TUNER, &priv->tuner) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl set tuner failed: %s\n", + info.short_name, strerror(errno)); + return TVI_CONTROL_FALSE; + } + } + mp_msg(MSGT_TV, MSGL_INFO, "%s: current audio mode is :%s%s%s%s\n", info.short_name, + (priv->tuner.audmode == V4L2_TUNER_MODE_MONO) ? " MONO" : "", + (priv->tuner.audmode == V4L2_TUNER_MODE_STEREO) ? " STEREO" : "", + (priv->tuner.audmode == V4L2_TUNER_MODE_LANG1) ? " LANG1" : "", + (priv->tuner.audmode == V4L2_TUNER_MODE_LANG2) ? " LANG2" : ""); + + if (tv_param_volume >= 0) { + control.id = V4L2_CID_AUDIO_VOLUME; + control.value = tv_param_volume; + set_control(priv, &control, 0); + } + if (tv_param_bass >= 0) { + control.id = V4L2_CID_AUDIO_BASS; + control.value = tv_param_bass; + set_control(priv, &control, 0); + } + if (tv_param_treble >= 0) { + control.id = V4L2_CID_AUDIO_TREBLE; + control.value = tv_param_treble; + set_control(priv, &control, 0); + } + if (tv_param_balance >= 0) { + control.id = V4L2_CID_AUDIO_BALANCE; + control.value = tv_param_balance; + set_control(priv, &control, 0); + } + } + + /* audio init */ + if (!tv_param_noaudio) { +#ifdef HAVE_ALSA9 + if (tv_param_alsa) + audio_in_init(&priv->audio_in, AUDIO_IN_ALSA); + else + audio_in_init(&priv->audio_in, AUDIO_IN_OSS); +#else + audio_in_init(&priv->audio_in, AUDIO_IN_OSS); +#endif + + if (priv->audio_dev) { + audio_in_set_device(&priv->audio_in, priv->audio_dev); + } + + audio_in_set_samplerate(&priv->audio_in, 44100); + if (priv->capability.capabilities & V4L2_CAP_TUNER) { + if (priv->tuner.audmode == V4L2_TUNER_MODE_STEREO) { + audio_in_set_channels(&priv->audio_in, 2); + } else { + audio_in_set_channels(&priv->audio_in, 1); + } + } else { + if (tv_param_forcechan >= 0) { + audio_in_set_channels(&priv->audio_in, tv_param_forcechan); + } else { + audio_in_set_channels(&priv->audio_in, 2); + } + } + if (audio_in_setup(&priv->audio_in) < 0) return 0; +// setup_audio_buffer_sizes(priv); + } + + return 1; +} + +static int get_capture_buffer_size(priv_t *priv) +{ + int bufsize, cnt; + int w = priv->format.fmt.pix.width; + int h = priv->format.fmt.pix.height; + int d = pixfmt2depth(priv->format.fmt.pix.pixelformat); + int bytesperline = w*d/8; + + if (tv_param_buffer_size >= 0) { + bufsize = tv_param_buffer_size*1024*1024; + } else { +#ifdef HAVE_SYS_SYSINFO_H + struct sysinfo si; + + sysinfo(&si); + if (si.totalram<2*1024*1024) { + bufsize = 1024*1024; + } else { + bufsize = si.totalram/2; + } +#else + bufsize = 16*1024*1024; +#endif + } + + cnt = bufsize/(h*bytesperline); + if (cnt < 2) cnt = 2; + + return cnt; +} + +/* that's the real start, we'got the format parameters (checked with control) */ +static int start(priv_t *priv) +{ + struct v4l2_requestbuffers request; + int i; + + /* setup audio parameters */ + + /* we need this to size the audio buffer properly */ + if (priv->immediate_mode) { + priv->video_buffer_size_max = 2; + } else { + priv->video_buffer_size_max = get_capture_buffer_size(priv); + } + + if (!tv_param_noaudio) { + setup_audio_buffer_sizes(priv); + priv->audio_skew_buffer = (long long*)malloc(sizeof(long long)*priv->aud_skew_cnt); + if (!priv->audio_skew_buffer) { + mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate skew buffer: %s\n", strerror(errno)); + return 0; + } + + priv->audio_ringbuffer = (unsigned char*)malloc(priv->audio_in.blocksize*priv->audio_buffer_size); + if (!priv->audio_ringbuffer) { + mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate audio buffer: %s\n", strerror(errno)); + return 0; + } + + priv->audio_secs_per_block = (double)priv->audio_in.blocksize/(priv->audio_in.samplerate + *priv->audio_in.channels + *priv->audio_in.bytes_per_sample); + priv->audio_head = 0; + priv->audio_tail = 0; + priv->audio_cnt = 0; + priv->audio_drop = 0; + priv->audio_skew = 0; + priv->audio_skew_total = 0; + priv->audio_recv_blocks_total = 0; + priv->audio_sent_blocks_total = 0; + } + + /* setup video parameters */ + if (!tv_param_noaudio) { + if (priv->video_buffer_size_max < 3.0*(priv->standard.frameperiod.denominator / + priv->standard.frameperiod.numerator) + *priv->audio_secs_per_block) { + mp_msg(MSGT_TV, MSGL_ERR, "Video buffer shorter than 3 times audio frame duration.\n" + "You will probably experience heavy framedrops.\n"); + } + } + + { + int bytesperline = priv->format.fmt.pix.width*pixfmt2depth(priv->format.fmt.pix.pixelformat)/8; + + mp_msg(MSGT_TV, MSGL_V, "Using a ring buffer for maximum %d frames, %d MB total size.\n", + priv->video_buffer_size_max, + priv->video_buffer_size_max*priv->format.fmt.pix.height*bytesperline/(1024*1024)); + } + + priv->video_ringbuffer = (unsigned char**)malloc(priv->video_buffer_size_max*sizeof(unsigned char*)); + if (!priv->video_ringbuffer) { + mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate video buffer: %s\n", strerror(errno)); + return 0; + } + for (i = 0; i < priv->video_buffer_size_max; i++) + priv->video_ringbuffer[i] = NULL; + priv->video_timebuffer = (long long*)malloc(sizeof(long long) * priv->video_buffer_size_max); + if (!priv->video_timebuffer) { + mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate time buffer: %s\n", strerror(errno)); + return 0; + } + + priv->video_head = 0; + priv->video_tail = 0; + priv->video_cnt = 0; + + /* request buffers */ + if (priv->immediate_mode) { + request.count = 2; + } else { + request.count = BUFFER_COUNT; + } + + request.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + request.memory = V4L2_MEMORY_MMAP; + if (ioctl(priv->video_fd, VIDIOC_REQBUFS, &request) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl request buffers failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + + /* query buffers */ + if (!(priv->map = malloc(sizeof(struct map) * request.count))) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: malloc capture buffers failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + + /* map and queue buffers */ + for (i = 0; i < request.count; i++) { + memset(&priv->map[i].buf,0,sizeof(priv->map[i].buf)); + priv->map[i].buf.index = i; + priv->map[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + priv->map[i].buf.memory = V4L2_MEMORY_MMAP; + if (ioctl(priv->video_fd, VIDIOC_QUERYBUF, &(priv->map[i].buf)) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl query buffer failed: %s\n", + info.short_name, strerror(errno)); + free(priv->map); + priv->map = NULL; + return 0; + } + priv->map[i].addr = mmap (0, priv->map[i].buf.length, PROT_READ | + PROT_WRITE, MAP_SHARED, priv->video_fd, priv->map[i].buf.m.offset); + if (priv->map[i].addr == MAP_FAILED) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: mmap capture buffer failed: %s\n", + info.short_name, strerror(errno)); + priv->map[i].len = 0; + return 0; + } + priv->map[i].len = priv->map[i].buf.length; + /* count up to make sure this is correct everytime */ + priv->mapcount++; + + if (ioctl(priv->video_fd, VIDIOC_QBUF, &(priv->map[i].buf)) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl queue buffer failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + } + + /* start audio thread */ + priv->shutdown = 0; + priv->audio_skew_measure_time = 0; + priv->first_frame = 0; + priv->audio_skew = 0; + priv->first = 1; + + if (priv->input.audioset) { + set_mute(priv, 0); + } + + return 1; +} + + +#ifdef HAVE_TV_BSDBT848 +static double grabimmediate_video_frame(priv_t *priv, char *buffer, int len) +{ + memset(buffer, 0xCC, len); + return(1); +} +#endif /* HAVE_TV_BSDBT848 */ + +// copies a video frame +// for YV12 swaps the 2nd and 3rd plane +static inline void copy_frame(priv_t *priv, unsigned char *dest, unsigned char *source) +{ + int w = priv->format.fmt.pix.width; + int h = priv->format.fmt.pix.height; + int d = pixfmt2depth(priv->format.fmt.pix.pixelformat); + int bytesperline = w*d/8; + + // YV12 uses VIDEO_PALETTE_YUV420P, but the planes are swapped + switch (priv->mp_format) { + case IMGFMT_YV12: + memcpy(dest, source, w * h); + memcpy(dest+w * h*5/4, source+w * h, w * h/4); + memcpy(dest+w * h, source+w * h*5/4, w * h/4); + break; + default: + memcpy(dest, source, bytesperline * h); + } + +} + +// maximum skew change, in frames +#define MAX_SKEW_DELTA 0.6 +static void *video_grabber(void *data) +{ + priv_t *priv = (priv_t*)data; + long long skew, prev_skew, xskew, interval, prev_interval; + int i; + int framesize = priv->format.fmt.pix.height*priv->format.fmt.pix.width* + pixfmt2depth(priv->format.fmt.pix.pixelformat)/8; + fd_set rdset; + struct timeval timeout; + struct v4l2_buffer buf; + + xskew = 0; + skew = 0; + interval = 0; + prev_interval = 0; + prev_skew = 0; + + mp_msg(MSGT_TV, MSGL_V, "%s: going to capture\n", info.short_name); + if (ioctl(priv->video_fd, VIDIOC_STREAMON, &(priv->format.type)) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl streamon failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + priv->streamon = 1; + + if (!tv_param_noaudio) { + pthread_mutex_init(&priv->skew_mutex, NULL); + pthread_create(&priv->audio_grabber_thread, NULL, audio_grabber, priv); + } + + for (priv->frames = 0; !priv->shutdown;) + { + int ret; + + if (priv->immediate_mode) { + while (priv->video_cnt == priv->video_buffer_size_max) { + usleep(10000); + if (priv->shutdown) { + return NULL; + } + } + } + + FD_ZERO (&rdset); + FD_SET (priv->video_fd, &rdset); + + timeout.tv_sec = 1; + timeout.tv_usec = 0; + + i = select(priv->video_fd + 1, &rdset, NULL, NULL, &timeout); + if (i < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: select failed: %s\n", + info.short_name, strerror(errno)); + continue; + } + else if (i == 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: select timeout\n", info.short_name); + continue; + } + else if (!FD_ISSET(priv->video_fd, &rdset)) { + continue; + } + + memset(&buf,0,sizeof(buf)); + buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + ret = ioctl(priv->video_fd, VIDIOC_DQBUF, &buf); + + if (ret < 0) { + /* + if there's no signal, the buffer might me dequeued + so we query all the buffers to see which one we should + put back to queue + + observed with saa7134 0.2.8 + don't know if is it a bug or (mis)feature + */ + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl dequeue buffer failed: %s, idx = %d\n", + info.short_name, strerror(errno), buf.index); + for (i = 0; i < priv->mapcount; i++) { + memset(&buf,0,sizeof(buf)); + buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + buf.index = i; + ret = ioctl(priv->video_fd, VIDIOC_QUERYBUF, &buf); + if (ret < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl query buffer failed: %s, idx = %d\n", + info.short_name, strerror(errno), buf.index); + return 0; + } + if ((buf.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE)) == V4L2_BUF_FLAG_MAPPED) { + if (ioctl(priv->video_fd, VIDIOC_QBUF, &(priv->map[i].buf)) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl queue buffer failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + } + } + continue; + } + + /* store the timestamp of the very first frame as reference */ + if (!priv->frames++) { + priv->first_frame = (long long)1e6*buf.timestamp.tv_sec + buf.timestamp.tv_usec; + } + priv->curr_frame = (long long)buf.timestamp.tv_sec*1e6+buf.timestamp.tv_usec; +// fprintf(stderr, "idx = %d, ts = %lf\n", buf.index, (double)(priv->curr_frame) / 1e6); + + interval = priv->curr_frame - priv->first_frame; + + if (!priv->immediate_mode) { + // interpolate the skew in time + pthread_mutex_lock(&priv->skew_mutex); + xskew = priv->audio_skew + (interval - priv->audio_skew_measure_time)*priv->audio_skew_factor; + pthread_mutex_unlock(&priv->skew_mutex); + // correct extreme skew changes to avoid (especially) moving backwards in time + if (xskew - prev_skew > (interval - prev_interval)*MAX_SKEW_DELTA) { + skew = prev_skew + (interval - prev_interval)*MAX_SKEW_DELTA; + } else if (xskew - prev_skew < -(interval - prev_interval)*MAX_SKEW_DELTA) { + skew = prev_skew - (interval - prev_interval)*MAX_SKEW_DELTA; + } else { + skew = xskew; + } + } + + mp_msg(MSGT_TV, MSGL_DBG3, "\nfps = %lf, interval = %lf, a_skew = %f, corr_skew = %f\n", + (interval != prev_interval) ? (double)1e6/(interval - prev_interval) : -1, + (double)1e-6*interval, (double)1e-6*xskew, (double)1e-6*skew); + mp_msg(MSGT_TV, MSGL_DBG3, "vcnt = %d, acnt = %d\n", priv->video_cnt, priv->audio_cnt); + + prev_skew = skew; + prev_interval = interval; + + /* allocate a new buffer, if needed */ + pthread_mutex_lock(&priv->video_buffer_mutex); + if (priv->video_buffer_size_current < priv->video_buffer_size_max) { + if (priv->video_cnt == priv->video_buffer_size_current) { + unsigned char *newbuf = (unsigned char*)malloc(framesize); + if (newbuf) { + memmove(priv->video_ringbuffer+priv->video_tail+1, priv->video_ringbuffer+priv->video_tail, + (priv->video_buffer_size_current-priv->video_tail)*sizeof(unsigned char *)); + memmove(priv->video_timebuffer+priv->video_tail+1, priv->video_timebuffer+priv->video_tail, + (priv->video_buffer_size_current-priv->video_tail)*sizeof(long long)); + priv->video_ringbuffer[priv->video_tail] = newbuf; + if ((priv->video_head >= priv->video_tail) && (priv->video_cnt > 0)) priv->video_head++; + priv->video_buffer_size_current++; + } + } + } + pthread_mutex_unlock(&priv->video_buffer_mutex); + + if (priv->video_cnt == priv->video_buffer_size_current) { + if (!priv->immediate_mode) { + mp_msg(MSGT_TV, MSGL_ERR, "\nvideo buffer full - dropping frame\n"); + } + } else { + if (priv->immediate_mode) { + priv->video_timebuffer[priv->video_tail] = 0; + } else { + // compensate for audio skew + // negative skew => there are more audio samples, increase interval + // positive skew => less samples, shorten the interval + priv->video_timebuffer[priv->video_tail] = interval - skew; + } + + copy_frame(priv, priv->video_ringbuffer[priv->video_tail], priv->map[buf.index].addr); + priv->video_tail = (priv->video_tail+1)%priv->video_buffer_size_current; + priv->video_cnt++; + } + if (ioctl(priv->video_fd, VIDIOC_QBUF, &buf) < 0) { + mp_msg(MSGT_TV, MSGL_ERR, "%s: ioctl queue buffer failed: %s\n", + info.short_name, strerror(errno)); + return 0; + } + } + return NULL; +} + +static double grab_video_frame(priv_t *priv, char *buffer, int len) +{ + double interval; + + if (priv->first) { + pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv); + priv->first = 0; + } + + while (priv->video_cnt == 0) { + usleep(10000); + } + + pthread_mutex_lock(&priv->video_buffer_mutex); + interval = (double)priv->video_timebuffer[priv->video_head]*1e-6; + memcpy(buffer, priv->video_ringbuffer[priv->video_head], len); + priv->video_cnt--; + priv->video_head = (priv->video_head+1)%priv->video_buffer_size_current; + pthread_mutex_unlock(&priv->video_buffer_mutex); + + return interval; +} + +static int get_video_framesize(priv_t *priv) +{ + return priv->format.fmt.pix.sizeimage; +} + +/* +// for testing purposes only +static void read_doublespeed(priv_t *priv) +{ + char *bufx = (char*)malloc(priv->audio_in.blocksize*2); + short *s; + short *d; + int i; + + audio_in_read_chunk(&priv->audio_in, bufx); + audio_in_read_chunk(&priv->audio_in, bufx+priv->audio_in.blocksize); + + s = bufx; + d = priv->audio_ringbuffer+priv->audio_tail*priv->audio_in.blocksize; + for (i = 0; i < priv->audio_in.blocksize/2; i++) { + *d++ = *s++; + *s++; + } + +} +*/ + +static void *audio_grabber(void *data) +{ + priv_t *priv = (priv_t*)data; + struct timeval tv; + int i, audio_skew_ptr = 0; + long long current_time, prev_skew = 0; + + gettimeofday(&tv, NULL); + priv->audio_start_time = (long long)1e6*tv.tv_sec + tv.tv_usec; + audio_in_start_capture(&priv->audio_in); + for (i = 0; i < priv->aud_skew_cnt; i++) + priv->audio_skew_buffer[i] = 0; + + for (; !priv->shutdown;) + { +// read_doublespeed(priv); + if (audio_in_read_chunk(&priv->audio_in, priv->audio_ringbuffer+priv->audio_tail*priv->audio_in.blocksize) < 0) + continue; + + pthread_mutex_lock(&priv->skew_mutex); + if (priv->first_frame == 0) { + // there is no first frame yet (unlikely to happen) +// fprintf(stderr, "warning - first frame not yet available!\n"); + pthread_mutex_unlock(&priv->skew_mutex); + continue; + } + pthread_mutex_unlock(&priv->skew_mutex); + + gettimeofday(&tv, NULL); + + priv->audio_recv_blocks_total++; + current_time = (long long)1e6*tv.tv_sec + tv.tv_usec - priv->audio_start_time; + +// fprintf(stderr, "spb = %lf, bs = %d, skew = %lf\n", priv->audio_secs_per_block, priv->audio_in.blocksize, +// (double)(current_time - 1e6*priv->audio_secs_per_block*priv->audio_recv_blocks_total)/1e6); + + priv->audio_skew_total -= priv->audio_skew_buffer[audio_skew_ptr]; + priv->audio_skew_buffer[audio_skew_ptr] = current_time + - 1e6*priv->audio_secs_per_block*priv->audio_recv_blocks_total; + priv->audio_skew_total += priv->audio_skew_buffer[audio_skew_ptr]; + audio_skew_ptr = (audio_skew_ptr+1) % priv->aud_skew_cnt; + + pthread_mutex_lock(&priv->skew_mutex); + // linear interpolation - here we interpolate current skew value + // from the moving average, which we expect to be in the middle + // of the interval + if (priv->audio_recv_blocks_total > priv->aud_skew_cnt) { + priv->audio_skew = priv->audio_skew_total/priv->aud_skew_cnt; + priv->audio_skew += (priv->audio_skew*priv->aud_skew_cnt)/(2*priv->audio_recv_blocks_total-priv->aud_skew_cnt); + } else { + // this smoothens the evolution of audio_skew at startup a bit + priv->audio_skew = ((priv->aud_skew_cnt+priv->audio_recv_blocks_total)*priv->audio_skew_total)/(priv->aud_skew_cnt*priv->audio_recv_blocks_total); + } +// fprintf(stderr, "audio_skew = %lf\n", (double)priv->audio_skew/1e6); + // current skew factor (assuming linearity) + // used for further interpolation in video_grabber + // probably overkill but seems to be necessary for + // stress testing by dropping half of the audio frames ;) + // especially when using ALSA with large block sizes + // where audio_skew remains a long while behind + if ((priv->audio_skew_measure_time != 0) && (current_time - priv->audio_skew_measure_time != 0)) { + priv->audio_skew_factor = (double)(priv->audio_skew-prev_skew)/(current_time - priv->audio_skew_measure_time); + } else { + priv->audio_skew_factor = 0.0; + } + + priv->audio_skew_measure_time = current_time; + prev_skew = priv->audio_skew; + priv->audio_skew -= priv->audio_start_time - priv->first_frame; + pthread_mutex_unlock(&priv->skew_mutex); + + if ((priv->audio_tail+1) % priv->audio_buffer_size == priv->audio_head) { + mp_msg(MSGT_TV, MSGL_ERR, "\ntoo bad - dropping audio frame !\n"); + priv->audio_drop++; + } else { + priv->audio_tail = (priv->audio_tail+1) % priv->audio_buffer_size; + priv->audio_cnt++; + } + } + return NULL; +} + +static double grab_audio_frame(priv_t *priv, char *buffer, int len) +{ + mp_dbg(MSGT_TV, MSGL_DBG2, "grab_audio_frame(priv=%p, buffer=%p, len=%d)\n", + priv, buffer, len); + + // compensate for dropped audio frames + if (priv->audio_drop && (priv->audio_head == priv->audio_tail)) { + priv->audio_drop--; + priv->audio_sent_blocks_total++; + memset(buffer, 0, len); + return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block; + } + + while (priv->audio_head == priv->audio_tail) { + usleep(10000); + } + memcpy(buffer, priv->audio_ringbuffer+priv->audio_head*priv->audio_in.blocksize, len); + priv->audio_head = (priv->audio_head+1) % priv->audio_buffer_size; + priv->audio_cnt--; + priv->audio_sent_blocks_total++; + return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block; +} + +static int get_audio_framesize(priv_t *priv) +{ + return(priv->audio_in.blocksize); +} + +#endif /* USE_TV || HAVE_TV_V4L2 */ diff --git a/libmpdemux/videodev2.h b/libmpdemux/videodev2.h new file mode 100644 index 0000000000..a4b8276e09 --- /dev/null +++ b/libmpdemux/videodev2.h @@ -0,0 +1,862 @@ +#ifndef __LINUX_VIDEODEV2_H +#define __LINUX_VIDEODEV2_H +/* + * Video for Linux Two + * + * Header file for v4l or V4L2 drivers and applications, for + * Linux kernels 2.2.x or 2.4.x. + * + * See http://www.thedirks.org/v4l2/ for API specs and other + * v4l2 documentation. + * + * Author: Bill Dirks + * Justin Schoeman + * et al. + */ +#include /* need struct timeval */ + +#include +#include + +/* + * M I S C E L L A N E O U S + */ + +/* Four-character-code (FOURCC) */ +#define v4l2_fourcc(a,b,c,d)\ + (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24)) + +/* + * E N U M S + */ +enum v4l2_field { + V4L2_FIELD_ANY = 0, /* driver can choose from none, + top, bottom, interlaced + depending on whatever it thinks + is approximate ... */ + V4L2_FIELD_NONE = 1, /* this device has no fields ... */ + V4L2_FIELD_TOP = 2, /* top field only */ + V4L2_FIELD_BOTTOM = 3, /* bottom field only */ + V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */ + V4L2_FIELD_SEQ_TB = 5, /* both fields sequential into one + buffer, top-bottom order */ + V4L2_FIELD_SEQ_BT = 6, /* same as above + bottom-top order */ + V4L2_FIELD_ALTERNATE = 7, /* both fields alternating into + separate buffers */ +}; +#define V4L2_FIELD_HAS_TOP(field) \ + ((field) == V4L2_FIELD_TOP ||\ + (field) == V4L2_FIELD_INTERLACED ||\ + (field) == V4L2_FIELD_SEQ_TB ||\ + (field) == V4L2_FIELD_SEQ_BT) +#define V4L2_FIELD_HAS_BOTTOM(field) \ + ((field) == V4L2_FIELD_BOTTOM ||\ + (field) == V4L2_FIELD_INTERLACED ||\ + (field) == V4L2_FIELD_SEQ_TB ||\ + (field) == V4L2_FIELD_SEQ_BT) +#define V4L2_FIELD_HAS_BOTH(field) \ + ((field) == V4L2_FIELD_INTERLACED ||\ + (field) == V4L2_FIELD_SEQ_TB ||\ + (field) == V4L2_FIELD_SEQ_BT) + +enum v4l2_buf_type { + V4L2_BUF_TYPE_VIDEO_CAPTURE = 1, + V4L2_BUF_TYPE_VIDEO_OUTPUT = 2, + V4L2_BUF_TYPE_VIDEO_OVERLAY = 3, + V4L2_BUF_TYPE_VBI_CAPTURE = 4, + V4L2_BUF_TYPE_VBI_OUTPUT = 5, + V4L2_BUF_TYPE_PRIVATE = 0x80, +}; + +enum v4l2_ctrl_type { + V4L2_CTRL_TYPE_INTEGER = 1, + V4L2_CTRL_TYPE_BOOLEAN = 2, + V4L2_CTRL_TYPE_MENU = 3, + V4L2_CTRL_TYPE_BUTTON = 4, +}; + +enum v4l2_tuner_type { + V4L2_TUNER_RADIO = 1, + V4L2_TUNER_ANALOG_TV = 2, +}; + +enum v4l2_memory { + V4L2_MEMORY_MMAP = 1, + V4L2_MEMORY_USERPTR = 2, + V4L2_MEMORY_OVERLAY = 3, +}; + +/* see also http://vektor.theorem.ca/graphics/ycbcr/ */ +enum v4l2_colorspace { + /* ITU-R 601 -- broadcast NTSC/PAL */ + V4L2_COLORSPACE_SMPTE170M = 1, + + /* 1125-Line (US) HDTV */ + V4L2_COLORSPACE_SMPTE240M = 2, + + /* HD and modern captures. */ + V4L2_COLORSPACE_REC709 = 3, + + /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */ + V4L2_COLORSPACE_BT878 = 4, + + /* These should be useful. Assume 601 extents. */ + V4L2_COLORSPACE_470_SYSTEM_M = 5, + V4L2_COLORSPACE_470_SYSTEM_BG = 6, + + /* I know there will be cameras that send this. So, this is + * unspecified chromaticities and full 0-255 on each of the + * Y'CbCr components + */ + V4L2_COLORSPACE_JPEG = 7, + + /* For RGB colourspaces, this is probably a good start. */ + V4L2_COLORSPACE_SRGB = 8, +}; + +struct v4l2_rect { + __s32 left; + __s32 top; + __s32 width; + __s32 height; +}; + +struct v4l2_fract { + __u32 numerator; + __u32 denominator; +}; + +/* + * D R I V E R C A P A B I L I T I E S + */ +struct v4l2_capability +{ + __u8 driver[16]; /* i.e. "bttv" */ + __u8 card[32]; /* i.e. "Hauppauge WinTV" */ + __u8 bus_info[32]; /* "PCI:" + pci_dev->slot_name */ + __u32 version; /* should use KERNEL_VERSION() */ + __u32 capabilities; /* Device capabilities */ + __u32 reserved[4]; +}; + +/* Values for 'capabilities' field */ +#define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */ +#define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */ +#define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */ +#define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a VBI capture device */ +#define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a VBI output device */ +#define V4L2_CAP_RDS_CAPTURE 0x00000100 /* RDS data capture */ + +#define V4L2_CAP_TUNER 0x00010000 /* Has a tuner */ +#define V4L2_CAP_AUDIO 0x00020000 /* has audio support */ + +#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */ +#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */ +#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */ + +/* + * V I D E O I M A G E F O R M A T + */ + +struct v4l2_pix_format +{ + __u32 width; + __u32 height; + __u32 pixelformat; + enum v4l2_field field; + __u32 bytesperline; /* for padding, zero if unused */ + __u32 sizeimage; + enum v4l2_colorspace colorspace; + __u32 priv; /* private data, depends on pixelformat */ +}; + +/* Pixel format FOURCC depth Description */ +#define V4L2_PIX_FMT_RGB332 v4l2_fourcc('R','G','B','1') /* 8 RGB-3-3-2 */ +#define V4L2_PIX_FMT_RGB555 v4l2_fourcc('R','G','B','O') /* 16 RGB-5-5-5 */ +#define V4L2_PIX_FMT_RGB565 v4l2_fourcc('R','G','B','P') /* 16 RGB-5-6-5 */ +#define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R','G','B','Q') /* 16 RGB-5-5-5 BE */ +#define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R','G','B','R') /* 16 RGB-5-6-5 BE */ +#define V4L2_PIX_FMT_BGR24 v4l2_fourcc('B','G','R','3') /* 24 BGR-8-8-8 */ +#define V4L2_PIX_FMT_RGB24 v4l2_fourcc('R','G','B','3') /* 24 RGB-8-8-8 */ +#define V4L2_PIX_FMT_BGR32 v4l2_fourcc('B','G','R','4') /* 32 BGR-8-8-8-8 */ +#define V4L2_PIX_FMT_RGB32 v4l2_fourcc('R','G','B','4') /* 32 RGB-8-8-8-8 */ +#define V4L2_PIX_FMT_GREY v4l2_fourcc('G','R','E','Y') /* 8 Greyscale */ +#define V4L2_PIX_FMT_YVU410 v4l2_fourcc('Y','V','U','9') /* 9 YVU 4:1:0 */ +#define V4L2_PIX_FMT_YVU420 v4l2_fourcc('Y','V','1','2') /* 12 YVU 4:2:0 */ +#define V4L2_PIX_FMT_YUYV v4l2_fourcc('Y','U','Y','V') /* 16 YUV 4:2:2 */ +#define V4L2_PIX_FMT_UYVY v4l2_fourcc('U','Y','V','Y') /* 16 YUV 4:2:2 */ +#define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4','2','2','P') /* 16 YVU422 planar */ +#define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4','1','1','P') /* 16 YVU411 planar */ +#define V4L2_PIX_FMT_Y41P v4l2_fourcc('Y','4','1','P') /* 12 YUV 4:1:1 */ + +/* two planes -- one Y, one Cr + Cb interleaved */ +#define V4L2_PIX_FMT_NV12 v4l2_fourcc('N','V','1','2') /* 12 Y/CbCr 4:2:0 */ +#define V4L2_PIX_FMT_NV21 v4l2_fourcc('N','V','2','1') /* 12 Y/CrCb 4:2:0 */ + +/* The following formats are not defined in the V4L2 specification */ +#define V4L2_PIX_FMT_YUV410 v4l2_fourcc('Y','U','V','9') /* 9 YUV 4:1:0 */ +#define V4L2_PIX_FMT_YUV420 v4l2_fourcc('Y','U','1','2') /* 12 YUV 4:2:0 */ +#define V4L2_PIX_FMT_YYUV v4l2_fourcc('Y','Y','U','V') /* 16 YUV 4:2:2 */ +#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H','I','2','4') /* 8 8-bit color */ + +/* compressed formats */ +#define V4L2_PIX_FMT_MJPEG v4l2_fourcc('M','J','P','G') /* Motion-JPEG */ +#define V4L2_PIX_FMT_JPEG v4l2_fourcc('J','P','E','G') /* JFIF JPEG */ +#define V4L2_PIX_FMT_DV v4l2_fourcc('d','v','s','d') /* 1394 */ +#define V4L2_PIX_FMT_MPEG v4l2_fourcc('M','P','E','G') /* MPEG */ + +/* Vendor-specific formats */ +#define V4L2_PIX_FMT_WNVA v4l2_fourcc('W','N','V','A') /* Winnov hw compres */ + +/* + * F O R M A T E N U M E R A T I O N + */ +struct v4l2_fmtdesc +{ + __u32 index; /* Format number */ + enum v4l2_buf_type type; /* buffer type */ + __u32 flags; + __u8 description[32]; /* Description string */ + __u32 pixelformat; /* Format fourcc */ + __u32 reserved[4]; +}; + +#define V4L2_FMT_FLAG_COMPRESSED 0x0001 + + +/* + * T I M E C O D E + */ +struct v4l2_timecode +{ + __u32 type; + __u32 flags; + __u8 frames; + __u8 seconds; + __u8 minutes; + __u8 hours; + __u8 userbits[4]; +}; + +/* Type */ +#define V4L2_TC_TYPE_24FPS 1 +#define V4L2_TC_TYPE_25FPS 2 +#define V4L2_TC_TYPE_30FPS 3 +#define V4L2_TC_TYPE_50FPS 4 +#define V4L2_TC_TYPE_60FPS 5 + +/* Flags */ +#define V4L2_TC_FLAG_DROPFRAME 0x0001 /* "drop-frame" mode */ +#define V4L2_TC_FLAG_COLORFRAME 0x0002 +#define V4L2_TC_USERBITS_field 0x000C +#define V4L2_TC_USERBITS_USERDEFINED 0x0000 +#define V4L2_TC_USERBITS_8BITCHARS 0x0008 +/* The above is based on SMPTE timecodes */ + + +/* + * C O M P R E S S I O N P A R A M E T E R S + */ +#if 0 +/* ### generic compression settings don't work, there is too much + * ### codec-specific stuff. Maybe reuse that for MPEG codec settings + * ### later ... */ +struct v4l2_compression +{ + __u32 quality; + __u32 keyframerate; + __u32 pframerate; + __u32 reserved[5]; +}; +#endif + +struct v4l2_jpegcompression +{ + int quality; + + int APPn; /* Number of APP segment to be written, + * must be 0..15 */ + int APP_len; /* Length of data in JPEG APPn segment */ + char APP_data[60]; /* Data in the JPEG APPn segment. */ + + int COM_len; /* Length of data in JPEG COM segment */ + char COM_data[60]; /* Data in JPEG COM segment */ + + __u32 jpeg_markers; /* Which markers should go into the JPEG + * output. Unless you exactly know what + * you do, leave them untouched. + * Inluding less markers will make the + * resulting code smaller, but there will + * be fewer aplications which can read it. + * The presence of the APP and COM marker + * is influenced by APP_len and COM_len + * ONLY, not by this property! */ + +#define V4L2_JPEG_MARKER_DHT (1<<3) /* Define Huffman Tables */ +#define V4L2_JPEG_MARKER_DQT (1<<4) /* Define Quantization Tables */ +#define V4L2_JPEG_MARKER_DRI (1<<5) /* Define Restart Interval */ +#define V4L2_JPEG_MARKER_COM (1<<6) /* Comment segment */ +#define V4L2_JPEG_MARKER_APP (1<<7) /* App segment, driver will + * allways use APP0 */ +}; + + +/* + * M E M O R Y - M A P P I N G B U F F E R S + */ +struct v4l2_requestbuffers +{ + __u32 count; + enum v4l2_buf_type type; + enum v4l2_memory memory; + __u32 reserved[2]; +}; + +struct v4l2_buffer +{ + __u32 index; + enum v4l2_buf_type type; + __u32 bytesused; + __u32 flags; + enum v4l2_field field; + struct timeval timestamp; + struct v4l2_timecode timecode; + __u32 sequence; + + /* memory location