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author | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-08-05 17:23:22 +0000 |
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committer | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-08-05 17:23:22 +0000 |
commit | 19704bb73a507b54aa8ddd208610fd548aeac3a1 (patch) | |
tree | ff99df4f34a20a52069c2d7987eb743c8261a8d5 /libmpcodecs/ad_libdv.c | |
parent | 54646d462b3fbe1c7d6e539a3181daf20721b5f5 (diff) | |
download | mpv-19704bb73a507b54aa8ddd208610fd548aeac3a1.tar.bz2 mpv-19704bb73a507b54aa8ddd208610fd548aeac3a1.tar.xz |
native DV audio/video decoders using libdv
based on patch by Alexander Neundorf <neundorf@kde.org>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6928 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpcodecs/ad_libdv.c')
-rw-r--r-- | libmpcodecs/ad_libdv.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/libmpcodecs/ad_libdv.c b/libmpcodecs/ad_libdv.c new file mode 100644 index 0000000000..0cd5553f8b --- /dev/null +++ b/libmpcodecs/ad_libdv.c @@ -0,0 +1,115 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <unistd.h> +#include <math.h> + +#include "config.h" + +#ifdef HAVE_LIBDV095 + +#include "img_format.h" + +#include <libdv/dv.h> +#include <libdv/dv_types.h> + +#include "stream.h" +#include "demuxer.h" +#include "stheader.h" + +#include "ad_internal.h" + +static ad_info_t info = +{ + "Raw DV Audio Decoder", + "libdv", + AFM_LIBDV, + "Alexander Neundorf <neundorf@kde.org>", + "http://libdv.sf.net", + "" +}; + +LIBAD_EXTERN(libdv) + +// defined in vd_libdv.c: +dv_decoder_t* init_global_rawdv_decoder(); + +static int preinit(sh_audio_t *sh_audio) +{ + sh_audio->audio_out_minsize=4*DV_AUDIO_MAX_SAMPLES*2; + return 1; +} + +static int16_t *audioBuffers[4]={NULL,NULL,NULL,NULL}; + +static int init(sh_audio_t *sh) +{ + int i; + WAVEFORMATEX *h=sh->wf; + + if(!h) return 0; + + sh->i_bps=h->nAvgBytesPerSec; + sh->channels=h->nChannels; + sh->samplerate=h->nSamplesPerSec; + sh->samplesize=(h->wBitsPerSample+7)/8; + + sh->context=init_global_rawdv_decoder(); + + for (i=0; i < 4; i++) + audioBuffers[i] = malloc(2*DV_AUDIO_MAX_SAMPLES); + + return 1; +} + +static void uninit(sh_audio_t *sh_audio) +{ + int i; + for (i=0; i < 4; i++) + free(audioBuffers[i]); +} + +static int control(sh_audio_t *sh,int cmd,void* arg, ...) +{ + // TODO!!! + return CONTROL_UNKNOWN; +} + +static int decode_audio(sh_audio_t *audio, unsigned char *buf, int minlen, int maxlen) +{ + int len=0; + dv_decoder_t* decoder=audio->context; //global_rawdv_decoder; + unsigned char* dv_audio_frame=NULL; + int xx=ds_get_packet(audio->ds,&dv_audio_frame); + if(xx<=0 || !dv_audio_frame) return 0; // EOF? + + dv_parse_header(decoder, dv_audio_frame); + + if(xx!=decoder->frame_size) + printf("warning! audio framesize differs! read=%d hdr=%d \n", + xx, decoder->frame_size); + + if (dv_decode_full_audio(decoder, dv_audio_frame,(int16_t**) audioBuffers)) + { + /* Interleave the audio into a single buffer */ + int i=0; + int16_t *bufP=(int16_t*)buf; + +// printf("samples=%d/%d chans=%d mem=%d \n",decoder->audio->samples_this_frame,DV_AUDIO_MAX_SAMPLES, +// decoder->audio->num_channels, decoder->audio->samples_this_frame*decoder->audio->num_channels*2); + +// return (44100/30)*4; + + for (i=0; i < decoder->audio->samples_this_frame; i++) + { + int ch; + for (ch=0; ch < decoder->audio->num_channels; ch++) + bufP[len++] = audioBuffers[ch][i]; + } + } + return len*2; +} + +#endif + |