2 * This file is part of MPlayer.
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * MPlayer is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include "ad_internal.h"
26 #include "libaf/af_format.h"
27 #include "libaf/reorder_ch.h"
29 static const ad_info_t info
=
31 "Uncompressed PCM audio decoder",
38 struct ad_pcm_context
{
39 unsigned char *packet_ptr
;
45 static int init(sh_audio_t
*sh_audio
)
47 WAVEFORMATEX
*h
=sh_audio
->wf
;
50 sh_audio
->i_bps
=h
->nAvgBytesPerSec
;
51 sh_audio
->channels
=h
->nChannels
;
52 sh_audio
->samplerate
=h
->nSamplesPerSec
;
53 sh_audio
->samplesize
=(h
->wBitsPerSample
+7)/8;
54 sh_audio
->sample_format
=AF_FORMAT_S16_LE
; // default
55 switch(sh_audio
->format
){ /* hardware formats: */
57 case 0x1: // Microsoft PCM
58 case 0xfffe: // Extended
59 switch (sh_audio
->samplesize
) {
60 case 1: sh_audio
->sample_format
=AF_FORMAT_U8
; break;
61 case 2: sh_audio
->sample_format
=AF_FORMAT_S16_LE
; break;
62 case 3: sh_audio
->sample_format
=AF_FORMAT_S24_LE
; break;
63 case 4: sh_audio
->sample_format
=AF_FORMAT_S32_LE
; break;
66 case 0x3: // IEEE float
67 sh_audio
->sample_format
=AF_FORMAT_FLOAT_LE
;
69 case 0x6: sh_audio
->sample_format
=AF_FORMAT_A_LAW
;break;
70 case 0x7: sh_audio
->sample_format
=AF_FORMAT_MU_LAW
;break;
71 case 0x11: sh_audio
->sample_format
=AF_FORMAT_IMA_ADPCM
;break;
72 case 0x50: sh_audio
->sample_format
=AF_FORMAT_MPEG2
;break;
73 /* case 0x2000: sh_audio->sample_format=AFMT_AC3; */
74 case 0x20776172: // 'raw '
75 sh_audio
->sample_format
=AF_FORMAT_S16_BE
;
76 if(sh_audio
->samplesize
==1) sh_audio
->sample_format
=AF_FORMAT_U8
;
78 case 0x736F7774: // 'twos'
79 sh_audio
->sample_format
=AF_FORMAT_S16_BE
;
80 // intended fall-through
81 case 0x74776F73: // 'sowt'
82 if(sh_audio
->samplesize
==1) sh_audio
->sample_format
=AF_FORMAT_S8
;
84 case 0x32336c66: // 'fl32', bigendian float32
85 sh_audio
->sample_format
=AF_FORMAT_FLOAT_BE
;
86 sh_audio
->samplesize
=4;
88 case 0x666c3332: // '23lf', little endian float32, MPlayer internal fourCC
89 sh_audio
->sample_format
=AF_FORMAT_FLOAT_LE
;
90 sh_audio
->samplesize
=4;
92 /* case 0x34366c66: // 'fl64', bigendian float64
93 sh_audio->sample_format=AF_FORMAT_FLOAT_BE;
94 sh_audio->samplesize=8;
96 case 0x666c3634: // '46lf', little endian float64, MPlayer internal fourCC
97 sh_audio->sample_format=AF_FORMAT_FLOAT_LE;
98 sh_audio->samplesize=8;
100 case 0x34326e69: // 'in24', bigendian int24
101 sh_audio
->sample_format
=AF_FORMAT_S24_BE
;
102 sh_audio
->samplesize
=3;
104 case 0x696e3234: // '42ni', little endian int24, MPlayer internal fourCC
105 sh_audio
->sample_format
=AF_FORMAT_S24_LE
;
106 sh_audio
->samplesize
=3;
108 case 0x32336e69: // 'in32', bigendian int32
109 sh_audio
->sample_format
=AF_FORMAT_S32_BE
;
110 sh_audio
->samplesize
=4;
112 case 0x696e3332: // '23ni', little endian int32, MPlayer internal fourCC
113 sh_audio
->sample_format
=AF_FORMAT_S32_LE
;
114 sh_audio
->samplesize
=4;
116 default: if(sh_audio
->samplesize
!=2) sh_audio
->sample_format
=AF_FORMAT_U8
;
118 if (!sh_audio
->samplesize
) // this would cause MPlayer to hang later
119 sh_audio
->samplesize
= 2;
120 sh_audio
->context
= talloc_zero(NULL
, struct ad_pcm_context
);
124 static int preinit(sh_audio_t
*sh
)
126 sh
->audio_out_minsize
=2048;
130 static void uninit(sh_audio_t
*sh
)
132 talloc_free(sh
->context
);
135 static int control(sh_audio_t
*sh
,int cmd
,void* arg
, ...)
140 case ADCTRL_SKIP_FRAME
:
143 demux_read_data(sh
->ds
,NULL
,skip
);
146 return CONTROL_UNKNOWN
;
149 static int decode_audio(sh_audio_t
*sh_audio
,unsigned char *buf
,int minlen
,int maxlen
)
151 unsigned len
= sh_audio
->channels
*sh_audio
->samplesize
;
152 minlen
= (minlen
+ len
- 1) / len
* len
;
154 // if someone needs hundreds of channels adjust audio_out_minsize
155 // based on channels in preinit()
159 struct ad_pcm_context
*ctx
= sh_audio
->context
;
160 while (len
< minlen
) {
161 if (ctx
->packet_len
== 0) {
163 int plen
= ds_get_packet_pts(sh_audio
->ds
, &ctx
->packet_ptr
, &pts
);
166 ctx
->packet_len
= plen
;
167 if (pts
!= MP_NOPTS_VALUE
) {
169 sh_audio
->pts_bytes
= 0;
172 int from_stored
= ctx
->packet_len
;
173 if (from_stored
> minlen
- len
)
174 from_stored
= minlen
- len
;
175 memcpy(buf
+ len
, ctx
->packet_ptr
, from_stored
);
176 ctx
->packet_len
-= from_stored
;
177 ctx
->packet_ptr
+= from_stored
;
178 sh_audio
->pts_bytes
+= from_stored
;
182 len
= -1; // The loop above only exits at error/EOF
183 if (len
> 0 && sh_audio
->channels
>= 5) {
184 reorder_channel_nch(buf
, AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT
,
185 AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT
,
187 len
/ sh_audio
->samplesize
, sh_audio
->samplesize
);