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Diffstat (limited to 'libmpdemux/demux_y4m.c')
-rw-r--r--libmpdemux/demux_y4m.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/libmpdemux/demux_y4m.c b/libmpdemux/demux_y4m.c
deleted file mode 100644
index cf0f7cf7e6..0000000000
--- a/libmpdemux/demux_y4m.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * Y4M file parser
- * copyright (c) 2001 Rik Snel
- * (using yuv4mpeg*.[ch] from mjpeg.sourceforge.net)
- * (derived from demux_viv.c)
- * older YUV4MPEG (used by xawtv) support by Alex Beregszaszi
- *
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h> /* strtok */
-
-#include "config.h"
-#include "mp_msg.h"
-#include "yuv4mpeg.h"
-
-#include "stream/stream.h"
-#include "demuxer.h"
-#include "stheader.h"
-
-typedef struct {
- int framenum;
- y4m_stream_info_t* si;
- int is_older;
-} y4m_priv_t;
-
-static int y4m_check_file(demuxer_t* demuxer){
- int orig_pos = stream_tell(demuxer->stream);
- char buf[10];
- y4m_priv_t* priv;
-
- mp_msg(MSGT_DEMUX, MSGL_V, "Checking for YUV4MPEG2\n");
-
- if(stream_read(demuxer->stream, buf, 9)!=9)
- return 0;
-
- buf[9] = 0;
-
- if (strncmp("YUV4MPEG2", buf, 9) && strncmp("YUV4MPEG ", buf, 9)) {
- return 0;
- }
-
- demuxer->priv = malloc(sizeof(y4m_priv_t));
- priv = demuxer->priv;
-
- priv->is_older = 0;
-
- if (!strncmp("YUV4MPEG ", buf, 9))
- {
- mp_msg(MSGT_DEMUX, MSGL_V, "Found older YUV4MPEG format (used by xawtv)\n");
- priv->is_older = 1;
- }
-
- mp_msg(MSGT_DEMUX,MSGL_DBG2,"Success: YUV4MPEG2\n");
-
- stream_seek(demuxer->stream, orig_pos);
-
- return DEMUXER_TYPE_Y4M;
-}
-
-static void read_streaminfo(demuxer_t *demuxer);
-
-// return value:
-// 0 = EOF or no stream found
-// 1 = successfully read a packet
-static int demux_y4m_fill_buffer(demuxer_t *demux, demux_stream_t *dsds) {
- demux_stream_t *ds=demux->video;
- demux_packet_t *dp;
- y4m_priv_t *priv=demux->priv;
- y4m_frame_info_t fi;
- unsigned char *buf[3];
- int err, size;
- int nextc;
-
- // Concatenated stream check; only done if seekable so skip(-1) works
- if (demux->stream->flags & MP_STREAM_SEEK_BW) {
- nextc = stream_read_char(demux->stream);
- stream_skip(demux->stream, -1);
- if (nextc == 'Y') {
- read_streaminfo(demux);
- demux->seekable = 0;
- }
- }
-
- y4m_init_frame_info(&fi);
-
- demux->filepos=stream_tell(demux->stream);
-
- size = ((sh_video_t*)ds->sh)->disp_w*((sh_video_t*)ds->sh)->disp_h;
-
- dp = new_demux_packet(3*size/2);
-
- /* swap U and V components */
- buf[0] = dp->buffer;
- buf[1] = dp->buffer + 5*size/4;
- buf[2] = dp->buffer + size;
-
- if (priv->is_older)
- {
- int c;
-
- c = stream_read_char(demux->stream); /* F */
- if (c == -256)
- return 0; /* EOF */
- if (c != 'F')
- {
- mp_msg(MSGT_DEMUX, MSGL_V, "Bad frame at %d\n", (int)stream_tell(demux->stream)-1);
- return 0;
- }
- stream_skip(demux->stream, 5); /* RAME\n */
- stream_read(demux->stream, buf[0], size);
- stream_read(demux->stream, buf[1], size/4);
- stream_read(demux->stream, buf[2], size/4);
- }
- else
- {
- if ((err=y4m_read_frame(demux->stream, priv->si, &fi, buf)) != Y4M_OK) {
- mp_msg(MSGT_DEMUX, MSGL_ERR, "error reading frame %s\n", y4m_strerr(err));
- return 0;
- }
- }
-
- /* This seems to be the right way to calculate the presentation time stamp */
- dp->pts=(float)priv->framenum/((sh_video_t*)ds->sh)->fps;
- priv->framenum++;
- dp->pos=demux->filepos;
- ds_add_packet(ds, dp);
-
- return 1;
-}
-
-static void read_streaminfo(demuxer_t *demuxer)
-{
- y4m_priv_t *priv = demuxer->priv;
- sh_video_t *sh = demuxer->video->sh;
- y4m_ratio_t ratio;
- int err;
-
- if (priv->is_older)
- {
- char buf[4];
- int frame_rate_code;
-
- stream_skip(demuxer->stream, 8); /* YUV4MPEG */
- stream_skip(demuxer->stream, 1); /* space */
- stream_read(demuxer->stream, (char *)&buf[0], 3);
- buf[3] = 0;
- sh->disp_w = atoi(buf);
- stream_skip(demuxer->stream, 1); /* space */
- stream_read(demuxer->stream, (char *)&buf[0], 3);
- buf[3] = 0;
- sh->disp_h = atoi(buf);
- stream_skip(demuxer->stream, 1); /* space */
- stream_read(demuxer->stream, (char *)&buf[0], 1);
- buf[1] = 0;
- frame_rate_code = atoi(buf);
- stream_skip(demuxer->stream, 1); /* new-line */
-
- if (!sh->fps)
- {
- /* values from xawtv */
- switch(frame_rate_code)
- {
- case 1:
- sh->fps = 23.976f;
- break;
- case 2:
- sh->fps = 24.0f;
- break;
- case 3:
- sh->fps = 25.0f;
- break;
- case 4:
- sh->fps = 29.97f;
- break;
- case 5:
- sh->fps = 30.0f;
- break;
- case 6:
- sh->fps = 50.0f;
- break;
- case 7:
- sh->fps = 59.94f;
- break;
- case 8:
- sh->fps = 60.0f;
- break;
- default:
- sh->fps = 25.0f;
- }
- }
- sh->frametime = 1.0f/sh->fps;
- }
- else
- {
- y4m_init_stream_info(priv->si);
- if ((err=y4m_read_stream_header(demuxer->stream, priv->si)) != Y4M_OK)
- mp_msg(MSGT_DEMUXER, MSGL_FATAL, "error parsing YUV4MPEG header: %s\n", y4m_strerr(err));
-
- if(!sh->fps) {
- ratio = y4m_si_get_framerate(priv->si);
- if (ratio.d != 0)
- sh->fps=(float)ratio.n/(float)ratio.d;
- else
- sh->fps=15.0f;
- }
- sh->frametime=1.0f/sh->fps;
-
- ratio = y4m_si_get_sampleaspect(priv->si);
-
- sh->disp_w = y4m_si_get_width(priv->si);
- sh->disp_h = y4m_si_get_height(priv->si);
-
- if (ratio.d != 0 && ratio.n != 0)
- sh->aspect = (float)(sh->disp_w*ratio.n)/(float)(sh->disp_h*ratio.d);
-
- demuxer->seekable = 0;
- }
-
- sh->format = mmioFOURCC('Y', 'V', '1', '2');
-
- sh->bih->biSize=40;
- sh->bih->biWidth = sh->disp_w;
- sh->bih->biHeight = sh->disp_h;
- sh->bih->biPlanes=3;
- sh->bih->biBitCount=12;
- sh->bih->biCompression=sh->format;
- sh->bih->biSizeImage=sh->bih->biWidth*sh->bih->biHeight*3/2; /* YV12 */
-
- mp_msg(MSGT_DEMUX, MSGL_INFO, "YUV4MPEG2 Video stream %d size: display: %dx%d, codec: %ux%u\n",
- demuxer->video->id, sh->disp_w, sh->disp_h, sh->bih->biWidth,
- sh->bih->biHeight);
-}
-
-static demuxer_t* demux_open_y4m(demuxer_t* demuxer){
- y4m_priv_t* priv = demuxer->priv;
- sh_video_t* sh=new_sh_video(demuxer,0);
-
- priv->framenum = 0;
- priv->si = malloc(sizeof(y4m_stream_info_t));
-
- sh->bih=calloc(1, sizeof(*sh->bih));
-
- demuxer->video->sh=sh;
- sh->ds=demuxer->video;
- demuxer->video->id=0;
-
- read_streaminfo(demuxer);
-
- return demuxer;
-}
-
-static void demux_seek_y4m(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags) {
- sh_video_t* sh = demuxer->video->sh;
- y4m_priv_t* priv = demuxer->priv;
- int rel_seek_frames = sh->fps*rel_seek_secs;
- int size = 3*sh->disp_w*sh->disp_h/2;
- off_t curr_pos = stream_tell(demuxer->stream);
-
- if (priv->framenum + rel_seek_frames < 0) rel_seek_frames = -priv->framenum;
-
- //printf("seektoframe=%d rel_seek_secs=%f seektooffset=%ld\n", priv->framenum + rel_seek_frames, rel_seek_secs, curr_pos + rel_seek_frames*(size+6));
- //printf("framenum=%d, curr_pos=%ld, currpos/(size+6)=%f\n", priv->framenum, curr_pos, (float)curr_pos/(float)(size+6));
- priv->framenum += rel_seek_frames;
-
- if (priv->is_older) {
- /* Well this is easy: every frame takes up size+6 bytes
- * in the stream and we may assume that the stream pointer
- * is always at the beginning of a frame.
- * framenum is the number of the frame that is about to be
- * demuxed (counting from ONE (see demux_open_y4m)) */
- stream_seek(demuxer->stream, curr_pos + rel_seek_frames*(size+6));
- } else {
- /* should never come here, because seeking for YUV4MPEG2
- * is disabled. */
- mp_msg(MSGT_DEMUX, MSGL_WARN, "Seeking for YUV4MPEG2 not yet implemented!\n");
- }
-}
-
-static void demux_close_y4m(demuxer_t *demuxer)
-{
- y4m_priv_t* priv = demuxer->priv;
-
- if(!priv)
- return;
- if (!priv->is_older)
- y4m_fini_stream_info(((y4m_priv_t*)demuxer->priv)->si);
- free(((y4m_priv_t*)demuxer->priv)->si);
- free(demuxer->priv);
- return;
-}
-
-
-const demuxer_desc_t demuxer_desc_y4m = {
- "YUV4MPEG2 demuxer",
- "y4m",
- "YUV4MPEG2",
- "Rik snel",
- "",
- DEMUXER_TYPE_Y4M,
- 1, // safe autodetect
- y4m_check_file,
- demux_y4m_fill_buffer,
- demux_open_y4m,
- demux_close_y4m,
- demux_seek_y4m,
- NULL
-};
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