mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 23:02:37 +00:00
1e649f353b
Used to be needed by demux_avi.
277 lines
8.0 KiB
C
277 lines
8.0 KiB
C
/*
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* This file is part of MPlayer.
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*
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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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*
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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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*
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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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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include "mpvcore/m_option.h"
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#include "stream/stream.h"
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#include "demux.h"
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#include "stheader.h"
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#include "audio/format.h"
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#include "video/img_format.h"
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#include "video/img_fourcc.h"
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struct priv {
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int frame_size;
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int read_frames;
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double frame_rate;
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};
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static struct mp_chmap channels = MP_CHMAP_INIT_STEREO;
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static int samplerate = 44100;
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static int aformat = AF_FORMAT_S16_NE;
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const m_option_t demux_rawaudio_opts[] = {
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{ "channels", &channels, &m_option_type_chmap, CONF_MIN, 1 },
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{ "rate", &samplerate, CONF_TYPE_INT, CONF_RANGE, 1000, 8 * 48000, NULL },
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{ "format", &aformat, CONF_TYPE_AFMT, 0, 0, 0, NULL },
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{NULL, NULL, 0, 0, 0, 0, NULL}
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};
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static int vformat = MP_FOURCC_I420;
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static int mp_format;
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static char *codec;
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static int width = 0;
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static int height = 0;
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static float fps = 25;
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static int imgsize = 0;
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const m_option_t demux_rawvideo_opts[] = {
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// size:
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{ "w", &width, CONF_TYPE_INT, CONF_RANGE, 1, 8192, NULL },
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{ "h", &height, CONF_TYPE_INT, CONF_RANGE, 1, 8192, NULL },
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// format:
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{ "format", &vformat, CONF_TYPE_FOURCC, 0, 0, 0, NULL },
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{ "mp-format", &mp_format, CONF_TYPE_IMGFMT, 0, 0, 0, NULL },
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{ "codec", &codec, CONF_TYPE_STRING, 0, 0, 0, NULL },
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// misc:
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{ "fps", &fps, CONF_TYPE_FLOAT, CONF_RANGE, 0.001, 1000, NULL },
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{ "size", &imgsize, CONF_TYPE_INT, CONF_RANGE, 1, 8192 * 8192 * 4, NULL },
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{NULL, NULL, 0, 0, 0, 0, NULL}
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};
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static int demux_rawaudio_open(demuxer_t *demuxer, enum demux_check check)
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{
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struct sh_stream *sh;
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sh_audio_t *sh_audio;
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WAVEFORMATEX *w;
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if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
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return -1;
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if ((aformat & AF_FORMAT_SPECIAL_MASK) != 0)
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return -1;
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sh = new_sh_stream(demuxer, STREAM_AUDIO);
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sh_audio = sh->audio;
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sh_audio->gsh->codec = "mp-pcm";
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sh_audio->format = aformat;
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sh_audio->wf = w = malloc(sizeof(*w));
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w->wFormatTag = 0;
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sh_audio->channels = channels;
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w->nChannels = sh_audio->channels.num;
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w->nSamplesPerSec = sh_audio->samplerate = samplerate;
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int samplesize = (af_fmt2bits(aformat) + 7) / 8;
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w->nAvgBytesPerSec = samplerate * samplesize * w->nChannels;
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w->nBlockAlign = w->nChannels * samplesize;
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w->wBitsPerSample = 8 * samplesize;
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w->cbSize = 0;
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demuxer->movi_start = demuxer->stream->start_pos;
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demuxer->movi_end = demuxer->stream->end_pos;
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struct priv *p = talloc_ptrtype(demuxer, p);
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demuxer->priv = p;
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*p = (struct priv) {
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.frame_size = samplesize * sh_audio->channels.num,
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.frame_rate = samplerate,
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.read_frames = samplerate,
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};
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return 0;
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}
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static int demux_rawvideo_open(demuxer_t *demuxer, enum demux_check check)
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{
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struct sh_stream *sh;
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sh_video_t *sh_video;
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if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
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return -1;
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if (!width || !height) {
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mp_msg(MSGT_DEMUX, MSGL_ERR, "rawvideo: width or height not specified!\n");
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return -1;
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}
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const char *decoder = "rawvideo";
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int imgfmt = vformat;
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if (mp_format) {
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decoder = "mp-rawvideo";
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imgfmt = mp_format;
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if (!imgsize) {
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struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(mp_format);
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for (int p = 0; p < desc.num_planes; p++) {
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imgsize += ((width >> desc.xs[p]) * (height >> desc.ys[p]) *
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desc.bpp[p] + 7) / 8;
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}
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}
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} else if (codec && codec[0])
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decoder = talloc_strdup(demuxer, codec);
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if (!imgsize) {
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int bpp = 0;
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switch (vformat) {
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case MP_FOURCC_I420: case MP_FOURCC_IYUV:
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case MP_FOURCC_NV12: case MP_FOURCC_NV21:
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case MP_FOURCC_HM12:
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case MP_FOURCC_YV12:
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bpp = 12;
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break;
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case MP_FOURCC_RGB12: case MP_FOURCC_BGR12:
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case MP_FOURCC_RGB15: case MP_FOURCC_BGR15:
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case MP_FOURCC_RGB16: case MP_FOURCC_BGR16:
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case MP_FOURCC_YUY2: case MP_FOURCC_UYVY:
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bpp = 16;
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break;
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case MP_FOURCC_RGB8: case MP_FOURCC_BGR8:
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case MP_FOURCC_Y800: case MP_FOURCC_Y8:
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bpp = 8;
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break;
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case MP_FOURCC_RGB24: case MP_FOURCC_BGR24:
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bpp = 24;
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break;
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case MP_FOURCC_RGB32: case MP_FOURCC_BGR32:
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bpp = 32;
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break;
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}
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if (!bpp) {
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mp_msg(MSGT_DEMUX, MSGL_ERR,
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"rawvideo: img size not specified and unknown format!\n");
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return -1;
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}
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imgsize = width * height * bpp / 8;
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}
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sh = new_sh_stream(demuxer, STREAM_VIDEO);
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sh_video = sh->video;
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sh_video->gsh->codec = decoder;
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sh_video->format = imgfmt;
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sh_video->fps = fps;
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sh_video->disp_w = width;
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sh_video->disp_h = height;
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sh_video->i_bps = fps * imgsize;
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demuxer->movi_start = demuxer->stream->start_pos;
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demuxer->movi_end = demuxer->stream->end_pos;
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struct priv *p = talloc_ptrtype(demuxer, p);
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demuxer->priv = p;
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*p = (struct priv) {
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.frame_size = imgsize,
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.frame_rate = fps,
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.read_frames = 1,
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};
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return 0;
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}
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static int raw_fill_buffer(demuxer_t *demuxer)
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{
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struct priv *p = demuxer->priv;
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if (demuxer->stream->eof)
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return 0;
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struct demux_packet *dp = new_demux_packet(p->frame_size * p->read_frames);
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dp->pos = stream_tell(demuxer->stream) - demuxer->movi_start;
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dp->pts = (dp->pos / p->frame_size) / p->frame_rate;
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int len = stream_read(demuxer->stream, dp->buffer, dp->len);
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resize_demux_packet(dp, len);
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demuxer_add_packet(demuxer, demuxer->streams[0], dp);
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return 1;
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}
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static void raw_seek(demuxer_t *demuxer, float rel_seek_secs, int flags)
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{
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struct priv *p = demuxer->priv;
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stream_t *s = demuxer->stream;
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stream_update_size(s);
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int64_t start = s->start_pos;
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int64_t end = s->end_pos;
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int64_t pos = (flags & SEEK_ABSOLUTE) ? start : stream_tell(s);
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if (flags & SEEK_FACTOR)
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pos += (end - start) * rel_seek_secs;
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else
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pos += rel_seek_secs * p->frame_rate * p->frame_size;
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if (pos < 0)
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pos = 0;
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if (end && pos > end)
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pos = end;
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stream_seek(s, (pos / p->frame_size) * p->frame_size);
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}
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static int raw_control(demuxer_t *demuxer, int cmd, void *arg)
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{
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struct priv *p = demuxer->priv;
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switch (cmd) {
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case DEMUXER_CTRL_GET_TIME_LENGTH: {
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stream_t *s = demuxer->stream;
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stream_update_size(s);
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int64_t start = s->start_pos;
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int64_t end = s->end_pos;
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if (!end)
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return DEMUXER_CTRL_DONTKNOW;
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*((double *) arg) = ((end - start) / p->frame_size) / p->frame_rate;
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return DEMUXER_CTRL_OK;
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}
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default:
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return DEMUXER_CTRL_NOTIMPL;
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}
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}
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const demuxer_desc_t demuxer_desc_rawaudio = {
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.name = "rawaudio",
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.desc = "Uncompressed audio",
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.open = demux_rawaudio_open,
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.fill_buffer = raw_fill_buffer,
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.seek = raw_seek,
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.control = raw_control,
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};
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const demuxer_desc_t demuxer_desc_rawvideo = {
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.name = "rawvideo",
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.desc = "Uncompressed video",
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.open = demux_rawvideo_open,
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.fill_buffer = raw_fill_buffer,
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.seek = raw_seek,
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.control = raw_control,
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};
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