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Diffstat (limited to 'libmpdemux/demux_mpc.c')
-rw-r--r--libmpdemux/demux_mpc.c235
1 files changed, 0 insertions, 235 deletions
diff --git a/libmpdemux/demux_mpc.c b/libmpdemux/demux_mpc.c
deleted file mode 100644
index 234eed45da..0000000000
--- a/libmpdemux/demux_mpc.c
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- * demuxer for Musepack v7 bitstream
- * copyright (c) 2005 Reimar Doeffinger <Reimar.Doeffinger@stud.uni-karlsruhe.de>
- *
- * This code may be be relicensed under the terms of the GNU LGPL when it
- * becomes part of the FFmpeg project (ffmpeg.org)
- *
- * This file is part of MPlayer.
- *
- * MPlayer 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.
- *
- * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include "mp_msg.h"
-#include "libavutil/common.h"
-#include "mpbswap.h"
-#include "stream/stream.h"
-#include "demuxer.h"
-#include "stheader.h"
-
-
-#define HDR_SIZE (6 * 4)
-
-typedef struct da_priv {
- float last_pts;
- float pts_per_packet;
- uint32_t dword;
- int pos;
- float length;
-} da_priv_t;
-
-static uint32_t get_bits(da_priv_t* priv, stream_t* s, int bits) {
- uint32_t out = priv->dword;
- uint32_t mask = (1 << bits) - 1;
- priv->pos += bits;
- if (priv->pos < 32) {
- out >>= (32 - priv->pos);
- }
- else {
- stream_read(s, (void *)&priv->dword, 4);
- priv->dword = le2me_32(priv->dword);
- priv->pos -= 32;
- if (priv->pos) {
- out <<= priv->pos;
- out |= priv->dword >> (32 - priv->pos);
- }
- }
- return out & mask;
-}
-
-static int demux_mpc_check(demuxer_t* demuxer) {
- stream_t *s = demuxer->stream;
- uint8_t hdr[HDR_SIZE];
- int i;
-
- if (stream_read(s, hdr, HDR_SIZE) != HDR_SIZE)
- return 0;
- for (i = 0; i < 30000 && !s->eof; i++) {
- if (hdr[0] == 'M' && hdr[1] == 'P' && hdr[2] == '+')
- break;
- memmove(hdr, &hdr[1], HDR_SIZE - 1);
- stream_read(s, &hdr[HDR_SIZE - 1], 1);
- }
-
- if (hdr[0] != 'M' || hdr[1] != 'P' || hdr[2] != '+')
- return 0;
- demuxer->movi_start = stream_tell(s) - HDR_SIZE;
- demuxer->movi_end = s->end_pos;
- demuxer->priv = malloc(HDR_SIZE);
- memcpy(demuxer->priv, hdr, HDR_SIZE);
- return DEMUXER_TYPE_MPC;
-}
-
-static demuxer_t *demux_mpc_open(demuxer_t* demuxer) {
- float seconds = 0;
- stream_t *s = demuxer->stream;
- sh_audio_t* sh_audio;
- da_priv_t* priv = demuxer->priv;
-
- sh_audio = new_sh_audio(demuxer,0);
-
- {
- char *wf = calloc(1, sizeof(WAVEFORMATEX) + HDR_SIZE);
- char *header = &wf[sizeof(WAVEFORMATEX)];
- const int freqs[4] = {44100, 48000, 37800, 32000};
- int frames;
- sh_audio->format = mmioFOURCC('M', 'P', 'C', ' ');
- memcpy(header, priv, HDR_SIZE);
- free(priv);
- frames = header[4] | header[5] << 8 | header[6] << 16 | header[7] << 24;
- sh_audio->wf = (WAVEFORMATEX *)wf;
- sh_audio->wf->wFormatTag = sh_audio->format;
- sh_audio->wf->nChannels = 2;
- sh_audio->wf->nSamplesPerSec = freqs[header[10] & 3];
- sh_audio->wf->nBlockAlign = 32 * 36;
- sh_audio->wf->wBitsPerSample = 16;
- seconds = 1152 * frames / (float)sh_audio->wf->nSamplesPerSec;
- if (demuxer->movi_end > demuxer->movi_start && seconds > 1)
- sh_audio->wf->nAvgBytesPerSec = (demuxer->movi_end - demuxer->movi_start) / seconds;
- else
- sh_audio->wf->nAvgBytesPerSec = 32 * 1024; // dummy to make mencoder not hang
- sh_audio->wf->cbSize = HDR_SIZE;
- demuxer->movi_start = stream_tell(s);
- demuxer->movi_end = s->end_pos;
- }
-
- priv = malloc(sizeof(da_priv_t));
- priv->last_pts = -1;
- priv->pts_per_packet = (32 * 36) / (float)sh_audio->wf->nSamplesPerSec;
- priv->length = seconds;
- priv->dword = 0;
- priv->pos = 32; // empty bit buffer
- get_bits(priv, s, 8); // discard first 8 bits
- demuxer->priv = priv;
- demuxer->audio->id = 0;
- demuxer->audio->sh = sh_audio;
- sh_audio->ds = demuxer->audio;
- sh_audio->samplerate = sh_audio->wf->nSamplesPerSec;
- sh_audio->i_bps = sh_audio->wf->nAvgBytesPerSec;
- sh_audio->audio.dwSampleSize = 0;
- sh_audio->audio.dwScale = 32 * 36;
- sh_audio->audio.dwRate = sh_audio->samplerate;
-
- return demuxer;
-}
-
-static int demux_mpc_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
- int l;
- int bit_len;
- demux_packet_t* dp;
- sh_audio_t* sh_audio = ds->sh;
- da_priv_t* priv = demux->priv;
- stream_t* s = demux->stream;
- sh_audio = ds->sh;
-
- if (s->eof)
- return 0;
-
- bit_len = get_bits(priv, s, 20);
- dp = new_demux_packet((bit_len + 7) / 8);
- for (l = 0; l < (bit_len / 8); l++)
- dp->buffer[l] = get_bits(priv, s, 8);
- bit_len %= 8;
- if (bit_len)
- dp->buffer[l] = get_bits(priv, s, bit_len) << (8 - bit_len);
- if (priv->last_pts < 0)
- priv->last_pts = 0;
- else
- priv->last_pts += priv->pts_per_packet;
- dp->pts = priv->last_pts;
- ds_add_packet(ds, dp);
- return 1;
-}
-
-static void demux_mpc_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
- sh_audio_t* sh_audio = demuxer->audio->sh;
- da_priv_t* priv = demuxer->priv;
- stream_t* s = demuxer->stream;
- float target = rel_seek_secs;
- if (flags & SEEK_FACTOR)
- target *= priv->length;
- if (!(flags & SEEK_ABSOLUTE))
- target += priv->last_pts;
- if (target < priv->last_pts) {
- stream_seek(s, demuxer->movi_start);
- priv->pos = 32; // empty bit buffer
- get_bits(priv, s, 8); // discard first 8 bits
- priv->last_pts = 0;
- }
- while (target > priv->last_pts) {
- int bit_len = get_bits(priv, s, 20);
- if (bit_len > 32) {
- stream_skip(s, bit_len / 32 * 4 - 4);
- get_bits(priv, s, 32); // make sure dword is reloaded
- }
- get_bits(priv, s, bit_len % 32);
- priv->last_pts += priv->pts_per_packet;
- if (s->eof) break;
- }
- if (!sh_audio) return;
-}
-
-static void demux_close_mpc(demuxer_t* demuxer) {
- da_priv_t* priv = demuxer->priv;
-
- free(priv);
-}
-
-static int demux_mpc_control(demuxer_t *demuxer,int cmd, void *arg){
- da_priv_t* priv = demuxer->priv;
- switch (cmd) {
- case DEMUXER_CTRL_GET_TIME_LENGTH:
- if (priv->length < 1) return DEMUXER_CTRL_DONTKNOW;
- *((double *)arg) = priv->length;
- return DEMUXER_CTRL_OK;
- case DEMUXER_CTRL_GET_PERCENT_POS:
- if (priv->length < 1) return DEMUXER_CTRL_DONTKNOW;
- *((int *)arg) = priv->last_pts * 100 / priv->length;
- return DEMUXER_CTRL_OK;
- }
- return DEMUXER_CTRL_NOTIMPL;
-}
-
-
-const demuxer_desc_t demuxer_desc_mpc = {
- "Musepack demuxer",
- "mpc",
- "MPC",
- "Reza Jelveh, Reimar Doeffinger",
- "supports v7 bitstream only",
- DEMUXER_TYPE_MPC,
- 0, // unsafe autodetect
- demux_mpc_check,
- demux_mpc_fill_buffer,
- demux_mpc_open,
- demux_close_mpc,
- demux_mpc_seek,
- demux_mpc_control
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 05:38:41 +0000