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* yuv4mpeg (mjpegtools) interface
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* Thrown together by Robert Kesterson <robertk@robertk.com>
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* Based on the pgm output plugin, the rgb2rgb postproc filter, divxdec,
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* This is undoubtedly incomplete, inaccurate, or just plain wrong. :-)
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* 2002/06/19 Klaus Stengel <Klaus.Stengel@asamnet.de>
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* - added support for interlaced output
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* Activate by using '-vo yuv4mpeg:interlaced'
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* or '-vo yuv4mpeg:interlaced_bf' if your source has
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* - added some additional checks to catch problems
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* 2002/04/17 Juergen Hammelmann <juergen.hammelmann@gmx.de>
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* - added support for output of subtitles
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* best, if you give option '-osdlevel 0' to mplayer for
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* no watching the seek+timer
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* This file is part of MPlayer.
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#include "subopt-helper.h"
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#include "video_out.h"
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#include "video_out_internal.h"
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#include "fastmemcpy.h"
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#include "libavutil/rational.h"
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static const vo_info_t info =
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"yuv4mpeg output for mjpegtools",
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"Robert Kesterson <robertk@robertk.com>",
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const LIBVO_EXTERN (yuv4mpeg)
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static int image_width = 0;
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static int image_height = 0;
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static float image_fps = 0;
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static uint8_t *image = NULL;
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static uint8_t *image_y = NULL;
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static uint8_t *image_u = NULL;
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static uint8_t *image_v = NULL;
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static char *yuv_filename = NULL;
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static int using_format = 0;
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static int write_bytes;
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#define Y4M_ILACE_NONE 'p' /* non-interlaced, progressive frame */
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#define Y4M_ILACE_TOP_FIRST 't' /* interlaced, top-field first */
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#define Y4M_ILACE_BOTTOM_FIRST 'b' /* interlaced, bottom-field first */
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/* Set progressive mode as default */
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static int config_interlace = Y4M_ILACE_NONE;
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#define Y4M_IS_INTERLACED (config_interlace != Y4M_ILACE_NONE)
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static int config(uint32_t width, uint32_t height, uint32_t d_width,
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uint32_t d_height, uint32_t flags, char *title,
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AVRational pixelaspect = av_div_q((AVRational){d_width, d_height},
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(AVRational){width, height});
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AVRational fps_frac = av_d2q(vo_fps, vo_fps * 1001 + 2);
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if (image_width == width && image_height == height &&
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image_fps == vo_fps && vo_config_count)
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if (vo_config_count) {
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mp_msg(MSGT_VO, MSGL_WARN,
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"Video formats differ (w:%i=>%i, h:%i=>%i, fps:%f=>%f), "
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"restarting output.\n",
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image_width, width, image_height, height, image_fps, vo_fps);
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image_height = height;
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using_format = format;
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if (Y4M_IS_INTERLACED)
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mp_tmsg(MSGT_VO,MSGL_FATAL,
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"Interlaced mode requires image height to be divisible by 4.");
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mp_tmsg(MSGT_VO,MSGL_FATAL,
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"Image width must be divisible by 2.");
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write_bytes = image_width * image_height * 3 / 2;
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image = malloc(write_bytes);
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yuv_out = fopen(yuv_filename, "wb");
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if (!yuv_out || image == 0)
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mp_tmsg(MSGT_VO,MSGL_FATAL,
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"Can't get memory or file handle to write \"%s\"!",
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image_u = image_y + image_width * image_height;
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image_v = image_u + image_width * image_height / 4;
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fprintf(yuv_out, "YUV4MPEG2 W%d H%d F%d:%d I%c A%d:%d\n",
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image_width, image_height, fps_frac.num, fps_frac.den,
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pixelaspect.num, pixelaspect.den);
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static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
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unsigned char *srca, int stride) {
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vo_draw_alpha_yv12(w, h, src, srca, stride,
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image + y0 * image_width + x0, image_width);
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static void draw_osd(void)
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vo_draw_text(image_width, image_height, draw_alpha);
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static void vo_y4m_write(const void *ptr, const size_t num_bytes)
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if (fwrite(ptr, 1, num_bytes, yuv_out) != num_bytes)
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mp_tmsg(MSGT_VO,MSGL_ERR,
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"Error writing image to output!");
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static int write_last_frame(void)
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fprintf(yuv_out, "FRAME\n");
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vo_y4m_write(image, write_bytes);
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static void flip_page (void)
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fprintf(yuv_out, "FRAME\n");
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vo_y4m_write(image, write_bytes);
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static int draw_slice(uint8_t *srcimg[], int stride[], int w,int h,int x,int y)
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uint8_t *dst, *src = srcimg[0];
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dst = image_y + image_width * y + x;
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for (i = 0; i < h; i++)
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fast_memcpy(dst, src, w);
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int imgstride = image_width >> 1;
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uint8_t *src1 = srcimg[1];
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uint8_t *src2 = srcimg[2];
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uint8_t *dstu = image_u + imgstride * (y >> 1) + (x >> 1);
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uint8_t *dstv = image_v + imgstride * (y >> 1) + (x >> 1);
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for (i = 0; i < h / 2; i++)
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fast_memcpy(dstu, src1 , w >> 1);
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fast_memcpy(dstv, src2, w >> 1);
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static int draw_frame(uint8_t * src[])
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// gets done in draw_slice
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static int query_format(uint32_t format)
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if (format == IMGFMT_YV12)
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return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW|VFCAP_OSD|VFCAP_ACCEPT_STRIDE;
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// WARNING: config(...) also uses this
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static void uninit(void)
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static void check_events(void)
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static int preinit(const char *arg)
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const opt_t subopts[] = {
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{"interlaced", OPT_ARG_BOOL, &il, NULL},
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{"interlaced_bf", OPT_ARG_BOOL, &il_bf, NULL},
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{"file", OPT_ARG_MSTRZ, &yuv_filename, NULL},
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yuv_filename = strdup("stream.yuv");
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if (subopt_parse(arg, subopts) != 0) {
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mp_tmsg(MSGT_VO, MSGL_FATAL, "Unknown subdevice: %s", arg);
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config_interlace = Y4M_ILACE_NONE;
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config_interlace = Y4M_ILACE_TOP_FIRST;
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config_interlace = Y4M_ILACE_BOTTOM_FIRST;
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/* Inform user which output mode is used */
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switch (config_interlace)
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case Y4M_ILACE_TOP_FIRST:
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mp_tmsg(MSGT_VO,MSGL_STATUS,
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"Using interlaced output mode, top-field first.");
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case Y4M_ILACE_BOTTOM_FIRST:
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mp_tmsg(MSGT_VO,MSGL_STATUS,
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"Using interlaced output mode, bottom-field first.");
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mp_tmsg(MSGT_VO,MSGL_STATUS,
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"Using (default) progressive frame mode.");
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static int control(uint32_t request, void *data)
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case VOCTRL_QUERY_FORMAT:
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return query_format(*((uint32_t*)data));
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case VOCTRL_DUPLICATE_FRAME:
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return write_last_frame();