mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 00:02:13 +00:00
c6d046414b
Remove the old implementation for these properties. It was never very good, often returned very innaccurate values or just 0, and was static even if the source was variable bitrate. Replace it with the implementation of "packet-video-bitrate". Mark the "packet-..." properties as deprecated. (The effective difference is different formatting, and returning the raw value in bits instead of kilobits.) Also extend the documentation a little. It appears at least some decoders (sipr?) need the AVCodecContext.bit_rate field set, so this one is still passed through.
318 lines
9.5 KiB
C
318 lines
9.5 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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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 "options/m_option.h"
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#include "options/options.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 "codec_tags.h"
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#include "video/img_format.h"
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#include "video/img_fourcc.h"
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#include "osdep/endian.h"
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struct demux_rawaudio_opts {
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struct mp_chmap channels;
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int samplerate;
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int aformat;
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};
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// Ad-hoc schema to systematically encode the format as int
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#define PCM(sign, is_float, bits, is_be) \
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((sign) | ((is_float) << 1) | ((is_be) << 2) | ((bits) << 3))
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#define NE (BYTE_ORDER == BIG_ENDIAN)
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#define OPT_BASE_STRUCT struct demux_rawaudio_opts
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const struct m_sub_options demux_rawaudio_conf = {
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.opts = (const m_option_t[]) {
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OPT_CHMAP("channels", channels, CONF_MIN, .min = 1),
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OPT_INTRANGE("rate", samplerate, 0, 1000, 8 * 48000),
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OPT_CHOICE("format", aformat, 0,
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({"u8", PCM(0, 0, 8, 0)},
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{"s8", PCM(1, 0, 8, 0)},
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{"u16le", PCM(0, 0, 16, 0)}, {"u16be", PCM(0, 0, 16, 1)},
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{"s16le", PCM(1, 0, 16, 0)}, {"u16be", PCM(1, 0, 16, 1)},
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{"u24le", PCM(0, 0, 24, 0)}, {"u24be", PCM(0, 0, 24, 1)},
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{"s24le", PCM(1, 0, 24, 0)}, {"s24be", PCM(1, 0, 24, 1)},
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{"u32le", PCM(0, 0, 32, 0)}, {"u32be", PCM(0, 0, 32, 1)},
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{"s32le", PCM(1, 0, 32, 0)}, {"s32be", PCM(1, 0, 32, 1)},
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{"floatle", PCM(0, 1, 32, 0)}, {"floatbe", PCM(0, 1, 32, 1)},
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{"doublele",PCM(0, 1, 64, 0)}, {"doublebe", PCM(0, 1, 64, 1)},
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{"u16", PCM(0, 0, 16, NE)},
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{"s16", PCM(1, 0, 16, NE)},
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{"u24", PCM(0, 0, 24, NE)},
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{"s24", PCM(1, 0, 24, NE)},
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{"u32", PCM(0, 0, 32, NE)},
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{"s32", PCM(1, 0, 32, NE)},
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{"float", PCM(0, 1, 32, NE)},
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{"double", PCM(0, 1, 64, NE)})),
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{0}
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},
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.size = sizeof(struct demux_rawaudio_opts),
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.defaults = &(const struct demux_rawaudio_opts){
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// Note that currently, stream_cdda expects exactly these parameters!
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.channels = MP_CHMAP_INIT_STEREO,
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.samplerate = 44100,
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.aformat = PCM(1, 0, 16, 0), // s16le
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},
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};
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#undef PCM
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#undef NE
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struct demux_rawvideo_opts {
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int vformat;
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int mp_format;
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char *codec;
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int width;
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int height;
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float fps;
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int imgsize;
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};
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#undef OPT_BASE_STRUCT
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#define OPT_BASE_STRUCT struct demux_rawvideo_opts
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const struct m_sub_options demux_rawvideo_conf = {
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.opts = (const m_option_t[]) {
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OPT_INTRANGE("w", width, 0, 1, 8192),
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OPT_INTRANGE("h", height, 0, 1, 8192),
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OPT_GENERAL(int, "format", vformat, 0, .type = &m_option_type_fourcc),
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OPT_IMAGEFORMAT("mp-format", mp_format, 0),
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OPT_STRING("codec", codec, 0),
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OPT_FLOATRANGE("fps", fps, 0, 0.001, 1000),
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OPT_INTRANGE("size", imgsize, 0, 1, 8192 * 8192 * 4),
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{0}
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},
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.size = sizeof(struct demux_rawvideo_opts),
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.defaults = &(const struct demux_rawvideo_opts){
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.vformat = MP_FOURCC_I420,
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.width = 1280,
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.height = 720,
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.fps = 25,
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},
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};
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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 int demux_rawaudio_open(demuxer_t *demuxer, enum demux_check check)
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{
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struct demux_rawaudio_opts *opts = demuxer->opts->demux_rawaudio;
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struct sh_stream *sh;
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sh_audio_t *sh_audio;
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if (check != DEMUX_CHECK_REQUEST && check != DEMUX_CHECK_FORCE)
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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->channels = opts->channels;
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sh_audio->force_channels = true;
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sh_audio->samplerate = opts->samplerate;
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int f = opts->aformat;
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// See PCM(): sign float bits endian
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mp_set_pcm_codec(sh, f & 1, f & 2, f >> 3, f & 4);
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int samplesize = ((f >> 3) + 7) / 8;
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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 = sh_audio->samplerate,
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.read_frames = sh_audio->samplerate / 8,
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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 demux_rawvideo_opts *opts = demuxer->opts->demux_rawvideo;
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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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int width = opts->width;
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int height = opts->height;
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if (!width || !height) {
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MP_ERR(demuxer, "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 = opts->vformat;
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int imgsize = opts->imgsize;
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if (opts->mp_format && !IMGFMT_IS_HWACCEL(opts->mp_format)) {
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decoder = "mp-rawvideo";
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imgfmt = opts->mp_format;
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if (!imgsize) {
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struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(opts->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 (opts->codec && opts->codec[0])
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decoder = talloc_strdup(demuxer, opts->codec);
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if (!imgsize) {
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int bpp = 0;
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switch (imgfmt) {
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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_ERR(demuxer, "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->codec = decoder;
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sh->format = imgfmt;
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sh_video->fps = opts->fps;
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sh_video->disp_w = width;
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sh_video->disp_h = height;
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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 = sh_video->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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if (!dp) {
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MP_ERR(demuxer, "Can't read packet.\n");
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return 1;
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}
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dp->pos = stream_tell(demuxer->stream);
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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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demux_packet_shorten(dp, len);
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demux_add_packet(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, double 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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int64_t end = 0;
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stream_control(s, STREAM_CTRL_GET_SIZE, &end);
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int64_t pos = (flags & SEEK_ABSOLUTE) ? 0 : stream_tell(s);
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if (flags & SEEK_FACTOR)
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pos += end * 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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int64_t end = 0;
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if (stream_control(s, STREAM_CTRL_GET_SIZE, &end) != STREAM_OK)
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return DEMUXER_CTRL_DONTKNOW;
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*((double *) arg) = (end / 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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