mpv/demux/demux_raw.c

277 lines
8.0 KiB
C

/*
* 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 "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include "mpvcore/m_option.h"
#include "stream/stream.h"
#include "demux.h"
#include "stheader.h"
#include "audio/format.h"
#include "video/img_format.h"
#include "video/img_fourcc.h"
struct priv {
int frame_size;
int read_frames;
double frame_rate;
};
static struct mp_chmap channels = MP_CHMAP_INIT_STEREO;
static int samplerate = 44100;
static int aformat = AF_FORMAT_S16_NE;
const m_option_t demux_rawaudio_opts[] = {
{ "channels", &channels, &m_option_type_chmap, CONF_MIN, 1 },
{ "rate", &samplerate, CONF_TYPE_INT, CONF_RANGE, 1000, 8 * 48000, NULL },
{ "format", &aformat, CONF_TYPE_AFMT, 0, 0, 0, NULL },
{NULL, NULL, 0, 0, 0, 0, NULL}
};
static int vformat = MP_FOURCC_I420;
static int mp_format;
static char *codec;
static int width = 0;
static int height = 0;
static float fps = 25;
static int imgsize = 0;
const m_option_t demux_rawvideo_opts[] = {
// size:
{ "w", &width, CONF_TYPE_INT, CONF_RANGE, 1, 8192, NULL },
{ "h", &height, CONF_TYPE_INT, CONF_RANGE, 1, 8192, NULL },
// format:
{ "format", &vformat, CONF_TYPE_FOURCC, 0, 0, 0, NULL },
{ "mp-format", &mp_format, CONF_TYPE_IMGFMT, 0, 0, 0, NULL },
{ "codec", &codec, CONF_TYPE_STRING, 0, 0, 0, NULL },
// misc:
{ "fps", &fps, CONF_TYPE_FLOAT, CONF_RANGE, 0.001, 1000, NULL },
{ "size", &imgsize, CONF_TYPE_INT, CONF_RANGE, 1, 8192 * 8192 * 4, NULL },
{NULL, NULL, 0, 0, 0, 0, NULL}
};
static int demux_rawaudio_open(demuxer_t *demuxer, enum demux_check check)
{
struct sh_stream *sh;
sh_audio_t *sh_audio;
WAVEFORMATEX *w;
if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
return -1;
if ((aformat & AF_FORMAT_SPECIAL_MASK) != 0)
return -1;
sh = new_sh_stream(demuxer, STREAM_AUDIO);
sh_audio = sh->audio;
sh_audio->gsh->codec = "mp-pcm";
sh_audio->format = aformat;
sh_audio->wf = w = malloc(sizeof(*w));
w->wFormatTag = 0;
sh_audio->channels = channels;
w->nChannels = sh_audio->channels.num;
w->nSamplesPerSec = sh_audio->samplerate = samplerate;
int samplesize = (af_fmt2bits(aformat) + 7) / 8;
w->nAvgBytesPerSec = samplerate * samplesize * w->nChannels;
w->nBlockAlign = w->nChannels * samplesize;
w->wBitsPerSample = 8 * samplesize;
w->cbSize = 0;
demuxer->movi_start = demuxer->stream->start_pos;
demuxer->movi_end = demuxer->stream->end_pos;
struct priv *p = talloc_ptrtype(demuxer, p);
demuxer->priv = p;
*p = (struct priv) {
.frame_size = samplesize * sh_audio->channels.num,
.frame_rate = samplerate,
.read_frames = samplerate,
};
return 0;
}
static int demux_rawvideo_open(demuxer_t *demuxer, enum demux_check check)
{
struct sh_stream *sh;
sh_video_t *sh_video;
if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
return -1;
if (!width || !height) {
mp_msg(MSGT_DEMUX, MSGL_ERR, "rawvideo: width or height not specified!\n");
return -1;
}
const char *decoder = "rawvideo";
int imgfmt = vformat;
if (mp_format) {
decoder = "mp-rawvideo";
imgfmt = mp_format;
if (!imgsize) {
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(mp_format);
for (int p = 0; p < desc.num_planes; p++) {
imgsize += ((width >> desc.xs[p]) * (height >> desc.ys[p]) *
desc.bpp[p] + 7) / 8;
}
}
} else if (codec && codec[0])
decoder = talloc_strdup(demuxer, codec);
if (!imgsize) {
int bpp = 0;
switch (vformat) {
case MP_FOURCC_I420: case MP_FOURCC_IYUV:
case MP_FOURCC_NV12: case MP_FOURCC_NV21:
case MP_FOURCC_HM12:
case MP_FOURCC_YV12:
bpp = 12;
break;
case MP_FOURCC_RGB12: case MP_FOURCC_BGR12:
case MP_FOURCC_RGB15: case MP_FOURCC_BGR15:
case MP_FOURCC_RGB16: case MP_FOURCC_BGR16:
case MP_FOURCC_YUY2: case MP_FOURCC_UYVY:
bpp = 16;
break;
case MP_FOURCC_RGB8: case MP_FOURCC_BGR8:
case MP_FOURCC_Y800: case MP_FOURCC_Y8:
bpp = 8;
break;
case MP_FOURCC_RGB24: case MP_FOURCC_BGR24:
bpp = 24;
break;
case MP_FOURCC_RGB32: case MP_FOURCC_BGR32:
bpp = 32;
break;
}
if (!bpp) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"rawvideo: img size not specified and unknown format!\n");
return -1;
}
imgsize = width * height * bpp / 8;
}
sh = new_sh_stream(demuxer, STREAM_VIDEO);
sh_video = sh->video;
sh_video->gsh->codec = decoder;
sh_video->format = imgfmt;
sh_video->fps = fps;
sh_video->disp_w = width;
sh_video->disp_h = height;
sh_video->i_bps = fps * imgsize;
demuxer->movi_start = demuxer->stream->start_pos;
demuxer->movi_end = demuxer->stream->end_pos;
struct priv *p = talloc_ptrtype(demuxer, p);
demuxer->priv = p;
*p = (struct priv) {
.frame_size = imgsize,
.frame_rate = fps,
.read_frames = 1,
};
return 0;
}
static int raw_fill_buffer(demuxer_t *demuxer)
{
struct priv *p = demuxer->priv;
if (demuxer->stream->eof)
return 0;
struct demux_packet *dp = new_demux_packet(p->frame_size * p->read_frames);
dp->pos = stream_tell(demuxer->stream) - demuxer->movi_start;
dp->pts = (dp->pos / p->frame_size) / p->frame_rate;
int len = stream_read(demuxer->stream, dp->buffer, dp->len);
resize_demux_packet(dp, len);
demuxer_add_packet(demuxer, demuxer->streams[0], dp);
return 1;
}
static void raw_seek(demuxer_t *demuxer, float rel_seek_secs, int flags)
{
struct priv *p = demuxer->priv;
stream_t *s = demuxer->stream;
stream_update_size(s);
int64_t start = s->start_pos;
int64_t end = s->end_pos;
int64_t pos = (flags & SEEK_ABSOLUTE) ? start : stream_tell(s);
if (flags & SEEK_FACTOR)
pos += (end - start) * rel_seek_secs;
else
pos += rel_seek_secs * p->frame_rate * p->frame_size;
if (pos < 0)
pos = 0;
if (end && pos > end)
pos = end;
stream_seek(s, (pos / p->frame_size) * p->frame_size);
}
static int raw_control(demuxer_t *demuxer, int cmd, void *arg)
{
struct priv *p = demuxer->priv;
switch (cmd) {
case DEMUXER_CTRL_GET_TIME_LENGTH: {
stream_t *s = demuxer->stream;
stream_update_size(s);
int64_t start = s->start_pos;
int64_t end = s->end_pos;
if (!end)
return DEMUXER_CTRL_DONTKNOW;
*((double *) arg) = ((end - start) / p->frame_size) / p->frame_rate;
return DEMUXER_CTRL_OK;
}
default:
return DEMUXER_CTRL_NOTIMPL;
}
}
const demuxer_desc_t demuxer_desc_rawaudio = {
.name = "rawaudio",
.desc = "Uncompressed audio",
.open = demux_rawaudio_open,
.fill_buffer = raw_fill_buffer,
.seek = raw_seek,
.control = raw_control,
};
const demuxer_desc_t demuxer_desc_rawvideo = {
.name = "rawvideo",
.desc = "Uncompressed video",
.open = demux_rawvideo_open,
.fill_buffer = raw_fill_buffer,
.seek = raw_seek,
.control = raw_control,
};