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https://github.com/mpv-player/mpv
synced 2025-02-05 06:31:47 +00:00
demux_mkv: get rid of MS structs
See previous commits. This finally replaces directly reading the file data into a struct with reading them manually. In theory this is more portable (no alignment issues and other things). For the most part, it's nice seeing this gone.
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wm4
parent
9c3c199558
commit
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@ -52,6 +52,7 @@
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#include "ebml.h"
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#include "matroska.h"
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#include "codec_tags.h"
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#include "video/img_fourcc.h"
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#include "common/msg.h"
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@ -1148,45 +1149,34 @@ static const videocodec_info_t vinfo[] = {
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static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track)
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{
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MP_BITMAPINFOHEADER *bih = &(MP_BITMAPINFOHEADER){0};
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unsigned char *extradata;
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unsigned int extradata_size = 0;
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struct sh_stream *sh;
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sh_video_t *sh_v;
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bool raw = false;
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struct sh_stream *sh = new_sh_stream(demuxer, STREAM_VIDEO);
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if (!sh)
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return 1;
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track->stream = sh;
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sh_video_t *sh_v = sh->video;
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sh->demuxer_id = track->tnum;
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sh->title = talloc_strdup(sh_v, track->name);
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if (track->ms_compat) { /* MS compatibility mode */
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MP_BITMAPINFOHEADER *src;
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if (track->private_data == NULL
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|| track->private_size < sizeof(*bih))
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// The private_data contains a BITMAPINFOHEADER struct
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if (track->private_data == NULL || track->private_size < 40)
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return 1;
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src = (MP_BITMAPINFOHEADER *) track->private_data;
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bih->biSize = le2me_32(src->biSize);
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bih->biWidth = le2me_32(src->biWidth);
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bih->biHeight = le2me_32(src->biHeight);
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bih->biPlanes = le2me_16(src->biPlanes);
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bih->biBitCount = le2me_16(src->biBitCount);
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bih->biCompression = le2me_32(src->biCompression);
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bih->biSizeImage = le2me_32(src->biSizeImage);
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bih->biXPelsPerMeter = le2me_32(src->biXPelsPerMeter);
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bih->biYPelsPerMeter = le2me_32(src->biYPelsPerMeter);
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bih->biClrUsed = le2me_32(src->biClrUsed);
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bih->biClrImportant = le2me_32(src->biClrImportant);
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extradata = track->private_data + sizeof(*bih);
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extradata_size = track->private_size - sizeof(*bih);
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unsigned char *h = track->private_data;
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if (track->v_width == 0)
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track->v_width = bih->biWidth;
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track->v_width = AV_RL32(h + 4); // biWidth
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if (track->v_height == 0)
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track->v_height = bih->biHeight;
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track->v_height = AV_RL32(h + 8); // biHeight
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sh_v->bits_per_coded_sample = AV_RL16(h + 14); // biBitCount
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sh->format = AV_RL32(h + 16); // biCompression
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extradata = track->private_data + 40;
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extradata_size = track->private_size - 40;
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} else {
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bih->biSize = sizeof(*bih);
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bih->biWidth = track->v_width;
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bih->biHeight = track->v_height;
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bih->biBitCount = 24;
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bih->biSizeImage = bih->biWidth * bih->biHeight * bih->biBitCount / 8;
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sh_v->bits_per_coded_sample = 24;
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if (track->private_size >= RVPROPERTIES_SIZE
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&& (!strcmp(track->codec_id, MKV_V_REALV10)
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@ -1200,30 +1190,26 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track)
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src = (uint8_t *) track->private_data + RVPROPERTIES_SIZE;
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cnt = track->private_size - RVPROPERTIES_SIZE;
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bih->biSize = 48 + cnt;
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bih->biPlanes = 1;
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type2 = AV_RB32(src - 4);
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if (type2 == 0x10003000 || type2 == 0x10003001)
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bih->biCompression = MP_FOURCC('R', 'V', '1', '3');
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sh->format = MP_FOURCC('R', 'V', '1', '3');
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else
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bih->biCompression =
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MP_FOURCC('R', 'V', track->codec_id[9], '0');
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sh->format = MP_FOURCC('R', 'V', track->codec_id[9], '0');
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// copy type1 and type2 info from rv properties
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extradata_size = cnt + 8;
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extradata = src - 8;
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track->realmedia = 1;
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} else if (strcmp(track->codec_id, MKV_V_UNCOMPRESSED) == 0) {
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// raw video, "like AVI" - this is a FourCC
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bih->biCompression = track->colorspace;
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sh->format = track->colorspace;
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raw = true;
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} else {
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const videocodec_info_t *vi = vinfo;
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while (vi->id && strcmp(vi->id, track->codec_id))
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vi++;
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bih->biCompression = vi->fourcc;
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sh->format = vi->fourcc;
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if (vi->extradata && track->private_data
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&& (track->private_size > 0)) {
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bih->biSize += track->private_size;
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extradata = track->private_data;
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extradata_size = track->private_size;
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}
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@ -1243,17 +1229,8 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track)
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return 1;
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}
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sh = new_sh_stream(demuxer, STREAM_VIDEO);
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if (!sh)
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return 1;
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track->stream = sh;
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sh_v = sh->video;
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sh->demuxer_id = track->tnum;
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sh->title = talloc_strdup(sh_v, track->name);
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sh->format = bih->biCompression;
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sh_v->bits_per_coded_sample = bih->biBitCount;
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sh_v->coded_width = bih->biWidth;
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sh_v->coded_height = bih->biHeight;
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sh_v->coded_width = track->v_width;
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sh_v->coded_height = track->v_height;
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sh_v->extradata = talloc_memdup(sh_v, extradata, extradata_size);
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sh_v->extradata_len = extradata_size;
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if (raw) {
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@ -1345,29 +1322,24 @@ static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track)
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sh->default_track = track->default_track;
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if (!track->a_osfreq)
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track->a_osfreq = track->a_sfreq;
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if (track->ms_compat) {
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if (track->private_size < sizeof(MP_WAVEFORMATEX))
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// The private_data contains a WAVEFORMATEX struct
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if (track->private_size < 18)
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goto error;
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MP_VERBOSE(demuxer, "track with MS compat audio.\n");
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MP_WAVEFORMATEX *wf = (void *)track->private_data;
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wf->wFormatTag = le2me_16(wf->wFormatTag);
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wf->nChannels = le2me_16(wf->nChannels);
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wf->nSamplesPerSec = le2me_32(wf->nSamplesPerSec);
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wf->nAvgBytesPerSec = le2me_32(wf->nAvgBytesPerSec);
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wf->nBlockAlign = le2me_16(wf->nBlockAlign);
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wf->wBitsPerSample = le2me_16(wf->wBitsPerSample);
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wf->cbSize = track->private_size - sizeof(*wf);
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extradata = track->private_data + sizeof(*wf);
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extradata_len = track->private_size - sizeof(*wf);
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if (track->a_osfreq == 0.0)
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track->a_osfreq = wf->nSamplesPerSec;
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unsigned char *h = track->private_data;
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track->a_formattag = AV_RL16(h + 0); // wFormatTag
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if (track->a_channels == 0)
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track->a_channels = wf->nChannels;
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track->a_channels = AV_RL16(h + 2); // nChannels
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if (track->a_osfreq == 0.0)
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track->a_osfreq = AV_RL32(h + 4); // nSamplesPerSec
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sh_a->bitrate = AV_RL32(h + 8) * 8; // nAvgBytesPerSec
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sh_a->block_align = AV_RL16(h + 12); // nBlockAlign
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if (track->a_bps == 0)
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track->a_bps = wf->wBitsPerSample;
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track->a_formattag = wf->wFormatTag;
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sh_a->bitrate = wf->nAvgBytesPerSec * 8;
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sh_a->block_align = wf->nBlockAlign;
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track->a_bps = AV_RL16(h + 14); // wBitsPerSample
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extradata = track->private_data + 18;
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extradata_len = track->private_size - 18;
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} else {
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for (int i = 0; ; i++) {
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const struct mkv_audio_tag *t = mkv_audio_tags + i;
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@ -1,52 +0,0 @@
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/*
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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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#ifndef MPLAYER_MS_HDR_H
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#define MPLAYER_MS_HDR_H
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#include "osdep/mpbswap.h"
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#include "video/img_fourcc.h"
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// These structs must be binary-compatible to the native win32 types,
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// because demux_mkv.c uses them directly.
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typedef struct __attribute__((__packed__)) MP_WAVEFORMATEX {
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unsigned short wFormatTag;
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unsigned short nChannels;
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unsigned int nSamplesPerSec;
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unsigned int nAvgBytesPerSec;
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unsigned short nBlockAlign;
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unsigned short wBitsPerSample;
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unsigned short cbSize;
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} MP_WAVEFORMATEX;
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typedef struct __attribute__((__packed__)) MP_BITMAPINFOHEADER {
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int biSize;
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int biWidth;
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int biHeight;
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short biPlanes;
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short biBitCount;
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int biCompression;
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int biSizeImage;
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int biXPelsPerMeter;
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int biYPelsPerMeter;
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int biClrUsed;
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int biClrImportant;
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} MP_BITMAPINFOHEADER;
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#endif /* MPLAYER_MS_HDR_H */
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@ -23,7 +23,7 @@
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#include "common/common.h"
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#include "audio/chmap.h"
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#include "ms_hdr.h"
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struct MPOpts;
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struct demuxer;
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