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mpv/demux/demux_raw.c
wm4 671df54e4d demux: merge sh_video/sh_audio/sh_sub 
This is mainly a refactor. I'm hoping it will make some things easier
in the future due to cleanly separating codec metadata and stream
metadata.

Also, declare that the "codec" field can not be NULL anymore. demux.c
will set it to "" if it's NULL when added. This gets rid of a corner
case everything had to handle, but which rarely happened.
2016-01-12 23:48:19 +01:00

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/*
* This file is part of mpv.
*
* mpv 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.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 "options/m_option.h"
#include "options/options.h"
#include "stream/stream.h"
#include "demux.h"
#include "stheader.h"
#include "codec_tags.h"
#include "video/img_format.h"
#include "video/img_fourcc.h"
#include "osdep/endian.h"
struct demux_rawaudio_opts {
struct mp_chmap 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[]) {
OPT_CHMAP("channels", channels, CONF_MIN, .min = 1),
OPT_INTRANGE("rate", samplerate, 0, 1000, 8 * 48000),
OPT_CHOICE("format", aformat, 0,
({"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)}, {"u16be", 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 = MP_CHMAP_INIT_STEREO,
.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[]) {
OPT_INTRANGE("w", width, 0, 1, 8192),
OPT_INTRANGE("h", height, 0, 1, 8192),
OPT_GENERAL(int, "format", vformat, 0, .type = &m_option_type_fourcc),
OPT_IMAGEFORMAT("mp-format", mp_format, 0),
OPT_STRING("codec", codec, 0),
OPT_FLOATRANGE("fps", fps, 0, 0.001, 1000),
OPT_INTRANGE("size", imgsize, 0, 1, 8192 * 8192 * 4),
{0}
},
.size = sizeof(struct demux_rawvideo_opts),
.defaults = &(const struct demux_rawvideo_opts){
.vformat = MP_FOURCC_I420,
.width = 1280,
.height = 720,
.fps = 25,
},
};
struct priv {
struct sh_stream *sh;
int frame_size;
int read_frames;
double frame_rate;
};
static int demux_rawaudio_open(demuxer_t *demuxer, enum demux_check check)
{
struct demux_rawaudio_opts *opts = demuxer->opts->demux_rawaudio;
if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
return -1;
struct sh_stream *sh = demux_alloc_sh_stream(STREAM_AUDIO);
struct mp_codec_params *c = sh->codec;
c->channels = opts->channels;
c->force_channels = true;
c->samplerate = opts->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 0;
}
static int demux_rawvideo_open(demuxer_t *demuxer, enum demux_check check)
{
struct demux_rawvideo_opts *opts = demuxer->opts->demux_rawvideo;
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;
if (opts->mp_format && !IMGFMT_IS_HWACCEL(opts->mp_format)) {
decoder = "mp-rawvideo";
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 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_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->disp_w = width;
c->disp_h = 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 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);
if (!dp) {
MP_ERR(demuxer, "Can't read packet.\n");
return 1;
}
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);
demux_add_packet(p->sh, dp);
return 1;
}
static void raw_seek(demuxer_t *demuxer, double rel_seek_secs, int flags)
{
struct priv *p = demuxer->priv;
stream_t *s = demuxer->stream;
int64_t end = 0;
stream_control(s, STREAM_CTRL_GET_SIZE, &end);
int64_t pos = (flags & SEEK_ABSOLUTE) ? 0 : stream_tell(s);
if (flags & SEEK_FACTOR)
pos += end * 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;
int64_t end = 0;
if (stream_control(s, STREAM_CTRL_GET_SIZE, &end) != STREAM_OK)
return DEMUXER_CTRL_DONTKNOW;
*((double *) arg) = (end / 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,
};
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