mpv/demux/demux_raw.c

330 lines
9.7 KiB
C

/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <libavcodec/avcodec.h>
#include <libavutil/common.h>
#include "common/av_common.h"
#include "options/m_config.h"
#include "options/m_option.h"
#include "stream/stream.h"
#include "demux.h"
#include "stheader.h"
#include "codec_tags.h"
#include "video/fmt-conversion.h"
#include "video/img_format.h"
#include "osdep/endian.h"
struct demux_rawaudio_opts {
struct m_channels channels;
int samplerate;
int aformat;
};
// Ad-hoc schema to systematically encode the format as int
#define PCM(sign, is_float, bits, is_be) \
((sign) | ((is_float) << 1) | ((is_be) << 2) | ((bits) << 3))
#define NE (BYTE_ORDER == BIG_ENDIAN)
#define OPT_BASE_STRUCT struct demux_rawaudio_opts
const struct m_sub_options demux_rawaudio_conf = {
.opts = (const m_option_t[]) {
{"channels", OPT_CHANNELS(channels), .min = 1},
{"rate", OPT_INT(samplerate), M_RANGE(1000, 8 * 48000)},
{"format", OPT_CHOICE(aformat,
{"u8", PCM(0, 0, 8, 0)},
{"s8", PCM(1, 0, 8, 0)},
{"u16le", PCM(0, 0, 16, 0)}, {"u16be", PCM(0, 0, 16, 1)},
{"s16le", PCM(1, 0, 16, 0)}, {"s16be", PCM(1, 0, 16, 1)},
{"u24le", PCM(0, 0, 24, 0)}, {"u24be", PCM(0, 0, 24, 1)},
{"s24le", PCM(1, 0, 24, 0)}, {"s24be", PCM(1, 0, 24, 1)},
{"u32le", PCM(0, 0, 32, 0)}, {"u32be", PCM(0, 0, 32, 1)},
{"s32le", PCM(1, 0, 32, 0)}, {"s32be", PCM(1, 0, 32, 1)},
{"floatle", PCM(0, 1, 32, 0)}, {"floatbe", PCM(0, 1, 32, 1)},
{"doublele",PCM(0, 1, 64, 0)}, {"doublebe", PCM(0, 1, 64, 1)},
{"u16", PCM(0, 0, 16, NE)},
{"s16", PCM(1, 0, 16, NE)},
{"u24", PCM(0, 0, 24, NE)},
{"s24", PCM(1, 0, 24, NE)},
{"u32", PCM(0, 0, 32, NE)},
{"s32", PCM(1, 0, 32, NE)},
{"float", PCM(0, 1, 32, NE)},
{"double", PCM(0, 1, 64, NE)})},
{0}
},
.size = sizeof(struct demux_rawaudio_opts),
.defaults = &(const struct demux_rawaudio_opts){
// Note that currently, stream_cdda expects exactly these parameters!
.channels = {
.set = 1,
.chmaps = (struct mp_chmap[]){ MP_CHMAP_INIT_STEREO, },
.num_chmaps = 1,
},
.samplerate = 44100,
.aformat = PCM(1, 0, 16, 0), // s16le
},
};
#undef PCM
#undef NE
struct demux_rawvideo_opts {
int vformat;
int mp_format;
char *codec;
int width;
int height;
float fps;
int imgsize;
};
#undef OPT_BASE_STRUCT
#define OPT_BASE_STRUCT struct demux_rawvideo_opts
const struct m_sub_options demux_rawvideo_conf = {
.opts = (const m_option_t[]) {
{"w", OPT_INT(width), M_RANGE(1, 8192)},
{"h", OPT_INT(height), M_RANGE(1, 8192)},
{"format", OPT_FOURCC(vformat)},
{"mp-format", OPT_IMAGEFORMAT(mp_format)},
{"codec", OPT_STRING(codec)},
{"fps", OPT_FLOAT(fps), M_RANGE(0.001, 1000)},
{"size", OPT_INT(imgsize), M_RANGE(1, 8192 * 8192 * 4)},
{0}
},
.size = sizeof(struct demux_rawvideo_opts),
.defaults = &(const struct demux_rawvideo_opts){
.vformat = MKTAG('I', '4', '2', '0'),
.width = 1280,
.height = 720,
.fps = 25,
},
};
struct priv {
struct sh_stream *sh;
int frame_size;
int read_frames;
double frame_rate;
};
static int generic_open(struct demuxer *demuxer)
{
struct stream *s = demuxer->stream;
struct priv *p = demuxer->priv;
int64_t end = stream_get_size(s);
if (end >= 0)
demuxer->duration = (end / p->frame_size) / p->frame_rate;
return 0;
}
static int demux_rawaudio_open(demuxer_t *demuxer, enum demux_check check)
{
struct demux_rawaudio_opts *opts =
mp_get_config_group(demuxer, demuxer->global, &demux_rawaudio_conf);
if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
return -1;
if (opts->channels.num_chmaps != 1) {
MP_ERR(demuxer, "Invalid channels option given.\n");
return -1;
}
struct sh_stream *sh = demux_alloc_sh_stream(STREAM_AUDIO);
struct mp_codec_params *c = sh->codec;
c->channels = opts->channels.chmaps[0];
c->force_channels = true;
c->samplerate = opts->samplerate;
c->native_tb_num = 1;
c->native_tb_den = c->samplerate;
int f = opts->aformat;
// See PCM(): sign float bits endian
mp_set_pcm_codec(sh->codec, f & 1, f & 2, f >> 3, f & 4);
int samplesize = ((f >> 3) + 7) / 8;
demux_add_sh_stream(demuxer, sh);
struct priv *p = talloc_ptrtype(demuxer, p);
demuxer->priv = p;
*p = (struct priv) {
.sh = sh,
.frame_size = samplesize * c->channels.num,
.frame_rate = c->samplerate,
.read_frames = c->samplerate / 8,
};
return generic_open(demuxer);
}
static int demux_rawvideo_open(demuxer_t *demuxer, enum demux_check check)
{
struct demux_rawvideo_opts *opts =
mp_get_config_group(demuxer, demuxer->global, &demux_rawvideo_conf);
if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
return -1;
int width = opts->width;
int height = opts->height;
if (!width || !height) {
MP_ERR(demuxer, "rawvideo: width or height not specified!\n");
return -1;
}
const char *decoder = "rawvideo";
int imgfmt = opts->vformat;
int imgsize = opts->imgsize;
int mp_imgfmt = 0;
if (opts->mp_format && !IMGFMT_IS_HWACCEL(opts->mp_format)) {
mp_imgfmt = opts->mp_format;
if (!imgsize) {
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(opts->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 (opts->codec && opts->codec[0])
decoder = talloc_strdup(demuxer, opts->codec);
if (!imgsize) {
int bpp = 0;
switch (imgfmt) {
case MKTAG('Y', 'V', '1', '2'):
case MKTAG('I', '4', '2', '0'):
case MKTAG('I', 'Y', 'U', 'V'):
bpp = 12;
break;
case MKTAG('U', 'Y', 'V', 'Y'):
case MKTAG('Y', 'U', 'Y', '2'):
bpp = 16;
break;
}
if (!bpp) {
MP_ERR(demuxer, "rawvideo: img size not specified and unknown format!\n");
return -1;
}
imgsize = width * height * bpp / 8;
}
struct sh_stream *sh = demux_alloc_sh_stream(STREAM_VIDEO);
struct mp_codec_params *c = sh->codec;
c->codec = decoder;
c->codec_tag = imgfmt;
c->fps = opts->fps;
c->reliable_fps = true;
c->disp_w = width;
c->disp_h = height;
if (mp_imgfmt) {
c->lav_codecpar = avcodec_parameters_alloc();
if (!c->lav_codecpar)
abort();
c->lav_codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
c->lav_codecpar->codec_id = mp_codec_to_av_codec_id(decoder);
c->lav_codecpar->format = imgfmt2pixfmt(mp_imgfmt);
c->lav_codecpar->width = width;
c->lav_codecpar->height = height;
}
demux_add_sh_stream(demuxer, sh);
struct priv *p = talloc_ptrtype(demuxer, p);
demuxer->priv = p;
*p = (struct priv) {
.sh = sh,
.frame_size = imgsize,
.frame_rate = c->fps,
.read_frames = 1,
};
return generic_open(demuxer);
}
static bool raw_read_packet(struct demuxer *demuxer, struct demux_packet **pkt)
{
struct priv *p = demuxer->priv;
if (demuxer->stream->eof)
return false;
struct demux_packet *dp = new_demux_packet(p->frame_size * p->read_frames);
if (!dp) {
MP_ERR(demuxer, "Can't read packet.\n");
return true;
}
dp->keyframe = true;
dp->pos = stream_tell(demuxer->stream);
dp->pts = (dp->pos / p->frame_size) / p->frame_rate;
int len = stream_read(demuxer->stream, dp->buffer, dp->len);
demux_packet_shorten(dp, len);
dp->stream = p->sh->index;
*pkt = dp;
return true;
}
static void raw_seek(demuxer_t *demuxer, double seek_pts, int flags)
{
struct priv *p = demuxer->priv;
stream_t *s = demuxer->stream;
int64_t end = stream_get_size(s);
int64_t frame_nr = seek_pts * p->frame_rate;
frame_nr = frame_nr - (frame_nr % p->read_frames);
int64_t pos = frame_nr * p->frame_size;
if (flags & SEEK_FACTOR)
pos = end * seek_pts;
if (pos < 0)
pos = 0;
if (end > 0 && pos > end)
pos = end;
stream_seek(s, (pos / p->frame_size) * p->frame_size);
}
const demuxer_desc_t demuxer_desc_rawaudio = {
.name = "rawaudio",
.desc = "Uncompressed audio",
.open = demux_rawaudio_open,
.read_packet = raw_read_packet,
.seek = raw_seek,
};
const demuxer_desc_t demuxer_desc_rawvideo = {
.name = "rawvideo",
.desc = "Uncompressed video",
.open = demux_rawvideo_open,
.read_packet = raw_read_packet,
.seek = raw_seek,
};