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lavd/v4l2: move pixel format conversion code to a separate place. 

This will be shared with the output device.
tags/n2.0
Clément Bœsch 12 years ago
parent
729fa55b8f
commit
8eec655320
4 changed files with 170 additions and 120 deletions
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  1. +1
    -1
      libavdevice/Makefile
  2. +96
    -0
      libavdevice/v4l2-common.c
  3. +62
    -0
      libavdevice/v4l2-common.h
  4. +11
    -119
      libavdevice/v4l2.c

+ 1
- 1
libavdevice/Makefile View File

@@ -32,7 +32,7 @@ OBJS-$(CONFIG_PULSE_INDEV) += pulse.o
OBJS-$(CONFIG_SDL_OUTDEV) += sdl.o OBJS-$(CONFIG_SDL_OUTDEV) += sdl.o
OBJS-$(CONFIG_SNDIO_INDEV) += sndio_common.o sndio_dec.o OBJS-$(CONFIG_SNDIO_INDEV) += sndio_common.o sndio_dec.o
OBJS-$(CONFIG_SNDIO_OUTDEV) += sndio_common.o sndio_enc.o OBJS-$(CONFIG_SNDIO_OUTDEV) += sndio_common.o sndio_enc.o
OBJS-$(CONFIG_V4L2_INDEV) += v4l2.o timefilter.o
OBJS-$(CONFIG_V4L2_INDEV) += v4l2.o v4l2-common.o timefilter.o
OBJS-$(CONFIG_V4L_INDEV) += v4l.o OBJS-$(CONFIG_V4L_INDEV) += v4l.o
OBJS-$(CONFIG_VFWCAP_INDEV) += vfwcap.o OBJS-$(CONFIG_VFWCAP_INDEV) += vfwcap.o
OBJS-$(CONFIG_X11GRAB_INDEV) += x11grab.o OBJS-$(CONFIG_X11GRAB_INDEV) += x11grab.o


+ 96
- 0
libavdevice/v4l2-common.c View File

@@ -0,0 +1,96 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "v4l2-common.h"

const struct fmt_map avpriv_fmt_conversion_table[] = {
//ff_fmt codec_id v4l2_fmt
{ AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420 },
{ AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU420 },
{ AV_PIX_FMT_YUV422P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
{ AV_PIX_FMT_YUYV422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV },
{ AV_PIX_FMT_UYVY422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY },
{ AV_PIX_FMT_YUV411P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
{ AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410 },
{ AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU410 },
{ AV_PIX_FMT_RGB555LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555 },
{ AV_PIX_FMT_RGB555BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555X },
{ AV_PIX_FMT_RGB565LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565 },
{ AV_PIX_FMT_RGB565BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565X },
{ AV_PIX_FMT_BGR24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24 },
{ AV_PIX_FMT_RGB24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24 },
{ AV_PIX_FMT_BGR0, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32 },
{ AV_PIX_FMT_0RGB, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB32 },
{ AV_PIX_FMT_GRAY8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY },
#ifdef V4L2_PIX_FMT_Y16
{ AV_PIX_FMT_GRAY16LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_Y16 },
#endif
{ AV_PIX_FMT_NV12, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 },
{ AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG },
{ AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG },
#ifdef V4L2_PIX_FMT_H264
{ AV_PIX_FMT_NONE, AV_CODEC_ID_H264, V4L2_PIX_FMT_H264 },
#endif
#ifdef V4L2_PIX_FMT_CPIA1
{ AV_PIX_FMT_NONE, AV_CODEC_ID_CPIA, V4L2_PIX_FMT_CPIA1 },
#endif
{ AV_PIX_FMT_NONE, AV_CODEC_ID_NONE, 0 },
};

uint32_t avpriv_fmt_ff2v4l(enum AVPixelFormat pix_fmt, enum AVCodecID codec_id)
{
int i;

for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
if ((codec_id == AV_CODEC_ID_NONE ||
avpriv_fmt_conversion_table[i].codec_id == codec_id) &&
(pix_fmt == AV_PIX_FMT_NONE ||
avpriv_fmt_conversion_table[i].ff_fmt == pix_fmt)) {
return avpriv_fmt_conversion_table[i].v4l2_fmt;
}
}

return 0;
}

enum AVPixelFormat avpriv_fmt_v4l2ff(uint32_t v4l2_fmt, enum AVCodecID codec_id)
{
int i;

for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
if (avpriv_fmt_conversion_table[i].v4l2_fmt == v4l2_fmt &&
avpriv_fmt_conversion_table[i].codec_id == codec_id) {
return avpriv_fmt_conversion_table[i].ff_fmt;
}
}

return AV_PIX_FMT_NONE;
}

enum AVCodecID avpriv_fmt_v4l2codec(uint32_t v4l2_fmt)
{
int i;

for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
if (avpriv_fmt_conversion_table[i].v4l2_fmt == v4l2_fmt) {
return avpriv_fmt_conversion_table[i].codec_id;
}
}

return AV_CODEC_ID_NONE;
}

+ 62
- 0
libavdevice/v4l2-common.h View File

@@ -0,0 +1,62 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#ifndef AVDEVICE_V4L2_COMMON_H
#define AVDEVICE_V4L2_COMMON_H

#undef __STRICT_ANSI__ //workaround due to broken kernel headers
#include "config.h"
#include "libavformat/internal.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/time.h>
#if HAVE_SYS_VIDEOIO_H
#include <sys/videoio.h>
#else
#if HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#include <linux/videodev2.h>
#endif
#include "libavutil/atomic.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avdevice.h"
#include "timefilter.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "libavutil/avstring.h"

struct fmt_map {
enum AVPixelFormat ff_fmt;
enum AVCodecID codec_id;
uint32_t v4l2_fmt;
};

extern av_export const struct fmt_map avpriv_fmt_conversion_table[];

uint32_t avpriv_fmt_ff2v4l(enum AVPixelFormat pix_fmt, enum AVCodecID codec_id);
enum AVPixelFormat avpriv_fmt_v4l2ff(uint32_t v4l2_fmt, enum AVCodecID codec_id);
enum AVCodecID avpriv_fmt_v4l2codec(uint32_t v4l2_fmt);

#endif /* AVDEVICE_V4L2_COMMON_H */

+ 11
- 119
libavdevice/v4l2.c View File

@@ -30,33 +30,7 @@
* V4L2_PIX_FMT_* and AV_PIX_FMT_* * V4L2_PIX_FMT_* and AV_PIX_FMT_*
*/ */


#undef __STRICT_ANSI__ //workaround due to broken kernel headers
#include "config.h"
#include "libavformat/internal.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/time.h>
#if HAVE_SYS_VIDEOIO_H
#include <sys/videoio.h>
#else
#if HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#include <linux/videodev2.h>
#endif
#include "libavutil/atomic.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avdevice.h"
#include "timefilter.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "libavutil/avstring.h"
#include "v4l2-common.h"


#if CONFIG_LIBV4L2 #if CONFIG_LIBV4L2
#include <libv4l2.h> #include <libv4l2.h>
@@ -128,45 +102,6 @@ struct buff_data {
int index; int index;
}; };


struct fmt_map {
enum AVPixelFormat ff_fmt;
enum AVCodecID codec_id;
uint32_t v4l2_fmt;
};

static struct fmt_map fmt_conversion_table[] = {
//ff_fmt codec_id v4l2_fmt
{ AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420 },
{ AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU420 },
{ AV_PIX_FMT_YUV422P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
{ AV_PIX_FMT_YUYV422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV },
{ AV_PIX_FMT_UYVY422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY },
{ AV_PIX_FMT_YUV411P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
{ AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410 },
{ AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU410 },
{ AV_PIX_FMT_RGB555LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555 },
{ AV_PIX_FMT_RGB555BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555X },
{ AV_PIX_FMT_RGB565LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565 },
{ AV_PIX_FMT_RGB565BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565X },
{ AV_PIX_FMT_BGR24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24 },
{ AV_PIX_FMT_RGB24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24 },
{ AV_PIX_FMT_BGR0, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32 },
{ AV_PIX_FMT_0RGB, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB32 },
{ AV_PIX_FMT_GRAY8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY },
#ifdef V4L2_PIX_FMT_Y16
{ AV_PIX_FMT_GRAY16LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_Y16 },
#endif
{ AV_PIX_FMT_NV12, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 },
{ AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG },
{ AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG },
#ifdef V4L2_PIX_FMT_H264
{ AV_PIX_FMT_NONE, AV_CODEC_ID_H264, V4L2_PIX_FMT_H264 },
#endif
#ifdef V4L2_PIX_FMT_CPIA1
{ AV_PIX_FMT_NONE, AV_CODEC_ID_CPIA, V4L2_PIX_FMT_CPIA1 },
#endif
};

static int device_open(AVFormatContext *ctx) static int device_open(AVFormatContext *ctx)
{ {
struct v4l2_capability cap; struct v4l2_capability cap;
@@ -275,49 +210,6 @@ static int first_field(int fd)
return 1; return 1;
} }


static uint32_t fmt_ff2v4l(enum AVPixelFormat pix_fmt, enum AVCodecID codec_id)
{
int i;

for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
if ((codec_id == AV_CODEC_ID_NONE ||
fmt_conversion_table[i].codec_id == codec_id) &&
(pix_fmt == AV_PIX_FMT_NONE ||
fmt_conversion_table[i].ff_fmt == pix_fmt)) {
return fmt_conversion_table[i].v4l2_fmt;
}
}

return 0;
}

static enum AVPixelFormat fmt_v4l2ff(uint32_t v4l2_fmt, enum AVCodecID codec_id)
{
int i;

for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
if (fmt_conversion_table[i].v4l2_fmt == v4l2_fmt &&
fmt_conversion_table[i].codec_id == codec_id) {
return fmt_conversion_table[i].ff_fmt;
}
}

return AV_PIX_FMT_NONE;
}

static enum AVCodecID fmt_v4l2codec(uint32_t v4l2_fmt)
{
int i;

for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
if (fmt_conversion_table[i].v4l2_fmt == v4l2_fmt) {
return fmt_conversion_table[i].codec_id;
}
}

return AV_CODEC_ID_NONE;
}

#if HAVE_STRUCT_V4L2_FRMIVALENUM_DISCRETE #if HAVE_STRUCT_V4L2_FRMIVALENUM_DISCRETE
static void list_framesizes(AVFormatContext *ctx, int fd, uint32_t pixelformat) static void list_framesizes(AVFormatContext *ctx, int fd, uint32_t pixelformat)
{ {
@@ -349,8 +241,8 @@ static void list_formats(AVFormatContext *ctx, int fd, int type)
struct v4l2_fmtdesc vfd = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE }; struct v4l2_fmtdesc vfd = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };


while(!v4l2_ioctl(fd, VIDIOC_ENUM_FMT, &vfd)) { while(!v4l2_ioctl(fd, VIDIOC_ENUM_FMT, &vfd)) {
enum AVCodecID codec_id = fmt_v4l2codec(vfd.pixelformat);
enum AVPixelFormat pix_fmt = fmt_v4l2ff(vfd.pixelformat, codec_id);
enum AVCodecID codec_id = avpriv_fmt_v4l2codec(vfd.pixelformat);
enum AVPixelFormat pix_fmt = avpriv_fmt_v4l2ff(vfd.pixelformat, codec_id);


vfd.index++; vfd.index++;


@@ -825,7 +717,7 @@ static int device_try_init(AVFormatContext *s1,
{ {
int ret, i; int ret, i;


*desired_format = fmt_ff2v4l(pix_fmt, s1->video_codec_id);
*desired_format = avpriv_fmt_ff2v4l(pix_fmt, s1->video_codec_id);


if (*desired_format) { if (*desired_format) {
ret = device_init(s1, width, height, *desired_format); ret = device_init(s1, width, height, *desired_format);
@@ -837,14 +729,14 @@ static int device_try_init(AVFormatContext *s1,
} }


if (!*desired_format) { if (!*desired_format) {
for (i = 0; i<FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
if (s1->video_codec_id == AV_CODEC_ID_NONE || if (s1->video_codec_id == AV_CODEC_ID_NONE ||
fmt_conversion_table[i].codec_id == s1->video_codec_id) {
avpriv_fmt_conversion_table[i].codec_id == s1->video_codec_id) {
av_log(s1, AV_LOG_DEBUG, "Trying to set codec:%s pix_fmt:%s\n", av_log(s1, AV_LOG_DEBUG, "Trying to set codec:%s pix_fmt:%s\n",
avcodec_get_name(fmt_conversion_table[i].codec_id),
(char *)av_x_if_null(av_get_pix_fmt_name(fmt_conversion_table[i].ff_fmt), "none"));
avcodec_get_name(avpriv_fmt_conversion_table[i].codec_id),
(char *)av_x_if_null(av_get_pix_fmt_name(avpriv_fmt_conversion_table[i].ff_fmt), "none"));


*desired_format = fmt_conversion_table[i].v4l2_fmt;
*desired_format = avpriv_fmt_conversion_table[i].v4l2_fmt;
ret = device_init(s1, width, height, *desired_format); ret = device_init(s1, width, height, *desired_format);
if (ret >= 0) if (ret >= 0)
break; break;
@@ -863,7 +755,7 @@ static int device_try_init(AVFormatContext *s1,
} }
} }


*codec_id = fmt_v4l2codec(*desired_format);
*codec_id = avpriv_fmt_v4l2codec(*desired_format);
av_assert0(*codec_id != AV_CODEC_ID_NONE); av_assert0(*codec_id != AV_CODEC_ID_NONE);
return ret; return ret;
} }
@@ -986,7 +878,7 @@ static int v4l2_read_header(AVFormatContext *s1)
if ((res = v4l2_set_parameters(s1)) < 0) if ((res = v4l2_set_parameters(s1)) < 0)
return res; return res;


st->codec->pix_fmt = fmt_v4l2ff(desired_format, codec_id);
st->codec->pix_fmt = avpriv_fmt_v4l2ff(desired_format, codec_id);
s->frame_size = s->frame_size =
avpicture_get_size(st->codec->pix_fmt, s->width, s->height); avpicture_get_size(st->codec->pix_fmt, s->width, s->height);




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