mirror of
https://github.com/mpv-player/mpv.git
synced 2024-09-20 12:02:23 +02:00
4873b32c59
Finish renaming directories and moving files. Adjust all include
statements to make the previous commit compile.
The two commits are separate, because git is bad at tracking renames
and content changes at the same time.
Also take this as an opportunity to remove the separation between
"common" and "mplayer" sources in the Makefile. ("common" used to be
shared between mplayer and mencoder.)
257 lines
7.5 KiB
C
257 lines
7.5 KiB
C
/*
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* PCM audio output driver
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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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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libavutil/common.h>
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#include "talloc.h"
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#include "core/subopt-helper.h"
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#include "audio/format.h"
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#include "audio/reorder_ch.h"
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#include "ao.h"
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#include "core/mp_msg.h"
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#ifdef __MINGW32__
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// for GetFileType to detect pipes
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#include <windows.h>
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#include <io.h>
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#endif
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struct priv {
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char *outputfilename;
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int waveheader;
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uint64_t data_length;
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FILE *fp;
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};
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#define WAV_ID_RIFF 0x46464952 /* "RIFF" */
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#define WAV_ID_WAVE 0x45564157 /* "WAVE" */
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#define WAV_ID_FMT 0x20746d66 /* "fmt " */
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#define WAV_ID_DATA 0x61746164 /* "data" */
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#define WAV_ID_PCM 0x0001
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#define WAV_ID_FLOAT_PCM 0x0003
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#define WAV_ID_FORMAT_EXTENSIBLE 0xfffe
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static void fput16le(uint16_t val, FILE *fp)
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{
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uint8_t bytes[2] = {val, val >> 8};
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fwrite(bytes, 1, 2, fp);
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}
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static void fput32le(uint32_t val, FILE *fp)
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{
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uint8_t bytes[4] = {val, val >> 8, val >> 16, val >> 24};
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fwrite(bytes, 1, 4, fp);
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}
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static void write_wave_header(struct ao *ao, FILE *fp, uint64_t data_length)
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{
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bool use_waveex = ao->channels >= 5 && ao->channels <= 8;
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uint16_t fmt = ao->format == AF_FORMAT_FLOAT_LE ?
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WAV_ID_FLOAT_PCM : WAV_ID_PCM;
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uint32_t fmt_chunk_size = use_waveex ? 40 : 16;
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int bits = af_fmt2bits(ao->format);
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// Master RIFF chunk
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fput32le(WAV_ID_RIFF, fp);
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// RIFF chunk size: 'WAVE' + 'fmt ' + 4 + fmt_chunk_size +
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// data chunk hdr (8) + data length
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fput32le(12 + fmt_chunk_size + 8 + data_length, fp);
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fput32le(WAV_ID_WAVE, fp);
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// Format chunk
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fput32le(WAV_ID_FMT, fp);
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fput32le(fmt_chunk_size, fp);
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fput16le(use_waveex ? WAV_ID_FORMAT_EXTENSIBLE : fmt, fp);
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fput16le(ao->channels, fp);
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fput32le(ao->samplerate, fp);
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fput32le(ao->bps, fp);
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fput16le(ao->channels * (bits / 8), fp);
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fput16le(bits, fp);
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if (use_waveex) {
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// Extension chunk
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fput16le(22, fp);
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fput16le(bits, fp);
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switch (ao->channels) {
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case 5:
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fput32le(0x0607, fp); // L R C Lb Rb
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break;
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case 6:
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fput32le(0x060f, fp); // L R C Lb Rb LFE
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break;
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case 7:
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fput32le(0x0727, fp); // L R C Cb Ls Rs LFE
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break;
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case 8:
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fput32le(0x063f, fp); // L R C Lb Rb Ls Rs LFE
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break;
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}
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// 2 bytes format + 14 bytes guid
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fput32le(fmt, fp);
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fput32le(0x00100000, fp);
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fput32le(0xAA000080, fp);
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fput32le(0x719B3800, fp);
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}
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// Data chunk
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fput32le(WAV_ID_DATA, fp);
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fput32le(data_length, fp);
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}
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static int init(struct ao *ao, char *params)
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{
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struct priv *priv = talloc_zero(ao, struct priv);
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ao->priv = priv;
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int fast = 0;
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const opt_t subopts[] = {
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{"waveheader", OPT_ARG_BOOL, &priv->waveheader, NULL},
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{"file", OPT_ARG_MSTRZ, &priv->outputfilename, NULL},
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{"fast", OPT_ARG_BOOL, &fast, NULL},
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{NULL}
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};
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// set defaults
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priv->waveheader = 1;
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if (subopt_parse(params, subopts) != 0)
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return -1;
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if (fast)
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mp_msg(MSGT_AO, MSGL_WARN,
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"[AO PCM] Suboption \"fast\" is deprecated.\n"
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"[AO PCM] Use -novideo, or -benchmark if you want "
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"faster playback with video.\n");
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if (!priv->outputfilename)
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priv->outputfilename =
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strdup(priv->waveheader ? "audiodump.wav" : "audiodump.pcm");
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if (priv->waveheader) {
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// WAV files must have one of the following formats
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switch (ao->format) {
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case AF_FORMAT_U8:
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case AF_FORMAT_S16_LE:
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case AF_FORMAT_S24_LE:
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case AF_FORMAT_S32_LE:
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case AF_FORMAT_FLOAT_LE:
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case AF_FORMAT_AC3_BE:
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case AF_FORMAT_AC3_LE:
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break;
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default:
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ao->format = AF_FORMAT_S16_LE;
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break;
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}
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}
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ao->outburst = 65536;
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ao->bps = ao->channels * ao->samplerate * (af_fmt2bits(ao->format) / 8);
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mp_tmsg(MSGT_AO, MSGL_INFO, "[AO PCM] File: %s (%s)\n"
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"PCM: Samplerate: %d Hz Channels: %d Format: %s\n",
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priv->outputfilename,
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priv->waveheader ? "WAVE" : "RAW PCM", ao->samplerate,
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ao->channels, af_fmt2str_short(ao->format));
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mp_tmsg(MSGT_AO, MSGL_INFO,
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"[AO PCM] Info: Faster dumping is achieved with -novideo\n"
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"[AO PCM] Info: To write WAVE files use -ao pcm:waveheader (default).\n");
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priv->fp = fopen(priv->outputfilename, "wb");
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if (!priv->fp) {
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mp_tmsg(MSGT_AO, MSGL_ERR, "[AO PCM] Failed to open %s for writing!\n",
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priv->outputfilename);
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return -1;
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}
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if (priv->waveheader) // Reserve space for wave header
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write_wave_header(ao, priv->fp, 0x7ffff000);
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ao->untimed = true;
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return 0;
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}
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// close audio device
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static void uninit(struct ao *ao, bool cut_audio)
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{
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struct priv *priv = ao->priv;
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if (priv->waveheader) { // Rewrite wave header
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bool broken_seek = false;
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#ifdef __MINGW32__
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// Windows, in its usual idiocy "emulates" seeks on pipes so it always
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// looks like they work. So we have to detect them brute-force.
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broken_seek = FILE_TYPE_DISK !=
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GetFileType((HANDLE)_get_osfhandle(_fileno(priv->fp)));
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#endif
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if (broken_seek || fseek(priv->fp, 0, SEEK_SET) != 0)
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mp_msg(MSGT_AO, MSGL_ERR, "Could not seek to start, "
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"WAV size headers not updated!\n");
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else {
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if (priv->data_length > 0xfffff000) {
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mp_msg(MSGT_AO, MSGL_ERR, "File larger than allowed for "
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"WAV files, may play truncated!\n");
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priv->data_length = 0xfffff000;
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}
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write_wave_header(ao, priv->fp, priv->data_length);
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}
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}
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fclose(priv->fp);
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free(priv->outputfilename);
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}
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static int get_space(struct ao *ao)
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{
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return ao->outburst;
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}
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static int play(struct ao *ao, void *data, int len, int flags)
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{
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struct priv *priv = ao->priv;
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if (ao->channels == 5 || ao->channels == 6 || ao->channels == 8) {
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int frame_size = af_fmt2bits(ao->format) / 8;
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len -= len % (frame_size * ao->channels);
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reorder_channel_nch(data, AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT,
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AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT,
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ao->channels, len / frame_size, frame_size);
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}
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fwrite(data, len, 1, priv->fp);
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priv->data_length += len;
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return len;
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}
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const struct ao_driver audio_out_pcm = {
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.is_new = true,
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.info = &(const struct ao_info) {
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"RAW PCM/WAVE file writer audio output",
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"pcm",
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"Atmosfear",
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"",
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},
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.init = init,
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.uninit = uninit,
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.get_space = get_space,
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.play = play,
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};
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