Add support for VDPAU video out, including hardware decoding.
[mplayer/glamo.git] / libmpcodecs / ad_speex.c
blobc41dfe8e3e4b5e710f270d8a8bc92a03fafa670a
1 /**
2 * Speex decoder by Reimar Döffinger <Reimar.Doeffinger@stud.uni-karlsruhe.de>
3 * License: GPL v2 or later
4 * This code may be be relicensed under the terms of the GNU LGPL when it
5 * becomes part of the FFmpeg project (ffmpeg.org)
6 */
7 #include "config.h"
8 #include <stdlib.h>
9 #include <speex/speex.h>
10 #include <speex/speex_stereo.h>
11 #include <speex/speex_header.h>
12 #include "ad_internal.h"
14 static ad_info_t info = {
15 "Speex audio decoder",
16 "speex",
17 "Reimar Döffinger",
18 "",
22 LIBAD_EXTERN(speex)
24 typedef struct {
25 SpeexBits bits;
26 void *dec_context;
27 SpeexStereoState stereo;
28 SpeexHeader *hdr;
29 } context_t;
31 #define MAX_FRAMES_PER_PACKET 100
33 static int preinit(sh_audio_t *sh) {
34 sh->audio_out_minsize = 2 * 320 * MAX_FRAMES_PER_PACKET * 2 * sizeof(short);
35 return 1;
38 static int init(sh_audio_t *sh) {
39 context_t *ctx = calloc(1, sizeof(context_t));
40 const SpeexMode *spx_mode;
41 const SpeexStereoState st_st = SPEEX_STEREO_STATE_INIT; // hack
42 if (!sh->wf || sh->wf->cbSize < 80) {
43 mp_msg(MSGT_DECAUDIO, MSGL_FATAL, "Missing extradata!\n");
44 return 0;
46 ctx->hdr = speex_packet_to_header((char *)&sh->wf[1], sh->wf->cbSize);
47 if (ctx->hdr->nb_channels != 1 && ctx->hdr->nb_channels != 2) {
48 mp_msg(MSGT_DECAUDIO, MSGL_WARN, "Invalid number of channels (%i), "
49 "assuming mono\n", ctx->hdr->nb_channels);
50 ctx->hdr->nb_channels = 1;
52 if (ctx->hdr->frames_per_packet > MAX_FRAMES_PER_PACKET) {
53 mp_msg(MSGT_DECAUDIO, MSGL_WARN, "Invalid number of frames per packet (%i), "
54 "assuming 1\n", ctx->hdr->frames_per_packet);
55 ctx->hdr->frames_per_packet = 1;
57 switch (ctx->hdr->mode) {
58 case 0:
59 spx_mode = &speex_nb_mode; break;
60 case 1:
61 spx_mode = &speex_wb_mode; break;
62 case 2:
63 spx_mode = &speex_uwb_mode; break;
64 default:
65 mp_msg(MSGT_DECAUDIO, MSGL_WARN, "Unknown speex mode (%i)\n", ctx->hdr->mode);
66 spx_mode = &speex_nb_mode;
68 ctx->dec_context = speex_decoder_init(spx_mode);
69 speex_bits_init(&ctx->bits);
70 memcpy(&ctx->stereo, &st_st, sizeof(ctx->stereo)); // hack part 2
71 sh->channels = ctx->hdr->nb_channels;
72 sh->samplerate = ctx->hdr->rate;
73 sh->samplesize = 2;
74 sh->sample_format = AF_FORMAT_S16_NE;
75 sh->context = ctx;
76 return 1;
79 static void uninit(sh_audio_t *sh) {
80 context_t *ctx = sh->context;
81 if (ctx) {
82 speex_bits_destroy(&ctx->bits);
83 speex_decoder_destroy(ctx->dec_context);
84 if (ctx->hdr)
85 free(ctx->hdr);
86 free(ctx);
88 ctx = NULL;
91 static int decode_audio(sh_audio_t *sh, unsigned char *buf,
92 int minlen, int maxlen) {
93 context_t *ctx = sh->context;
94 int len, framelen, framesamples;
95 char *packet;
96 int i, err;
97 speex_decoder_ctl(ctx->dec_context, SPEEX_GET_FRAME_SIZE, &framesamples);
98 framelen = framesamples * ctx->hdr->nb_channels * sizeof(short);
99 if (maxlen < ctx->hdr->frames_per_packet * framelen) {
100 mp_msg(MSGT_DECAUDIO, MSGL_V, "maxlen too small in decode_audio\n");
101 return -1;
103 len = ds_get_packet(sh->ds, (unsigned char **)&packet);
104 if (len <= 0) return -1;
105 speex_bits_read_from(&ctx->bits, packet, len);
106 i = ctx->hdr->frames_per_packet;
107 do {
108 err = speex_decode_int(ctx->dec_context, &ctx->bits, (short *)buf);
109 if (err == -2)
110 mp_msg(MSGT_DECAUDIO, MSGL_ERR, "Error decoding file.\n");
111 if (ctx->hdr->nb_channels == 2)
112 speex_decode_stereo_int((short *)buf, framesamples, &ctx->stereo);
113 buf = &buf[framelen];
114 } while (--i > 0);
115 return ctx->hdr->frames_per_packet * framelen;
118 static int control(sh_audio_t *sh, int cmd, void *arg, ...) {
119 return CONTROL_UNKNOWN;