-/*
- * Ogg Vorbis codec support via libvorbisenc
- * Mark Hills <mark@pogo.org.uk>
+/**
+ * @file oggvorbis.c
+ * Ogg Vorbis codec support via libvorbisenc.
+ * @author Mark Hills <mark@pogo.org.uk>
*/
-#include <time.h>
-
#include <vorbis/vorbisenc.h>
#include "avcodec.h"
-#include "oggvorbis.h"
-#define OGGVORBIS_FRAME_SIZE 1024
+#undef NDEBUG
+#include <assert.h>
+
+#define OGGVORBIS_FRAME_SIZE 64
+#define BUFFER_SIZE (1024*64)
typedef struct OggVorbisContext {
vorbis_info vi ;
vorbis_dsp_state vd ;
vorbis_block vb ;
+ uint8_t buffer[BUFFER_SIZE];
+ int buffer_index;
/* decoder */
vorbis_comment vc ;
+ ogg_packet op;
} OggVorbisContext ;
-int oggvorbis_init_encoder(vorbis_info *vi, AVCodecContext *avccontext) {
- if(avccontext->coded_frame->quality) /* VBR requested */
- return vorbis_encode_init_vbr(vi, avccontext->channels,
- avccontext->sample_rate, (float)avccontext->coded_frame->quality / 1000) ;
+static int oggvorbis_init_encoder(vorbis_info *vi, AVCodecContext *avccontext) {
+
+#ifdef OGGVORBIS_VBR_BY_ESTIMATE
+ /* variable bitrate by estimate */
+
+ return (vorbis_encode_setup_managed(vi, avccontext->channels,
+ avccontext->sample_rate, -1, avccontext->bit_rate, -1) ||
+ vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE_AVG, NULL) ||
+ vorbis_encode_setup_init(vi)) ;
+#else
+ /* constant bitrate */
return vorbis_encode_init(vi, avccontext->channels,
avccontext->sample_rate, -1, avccontext->bit_rate, -1) ;
+#endif
}
-
static int oggvorbis_encode_init(AVCodecContext *avccontext) {
OggVorbisContext *context = avccontext->priv_data ;
+ ogg_packet header, header_comm, header_code;
+ uint8_t *p;
+ unsigned int offset, len;
vorbis_info_init(&context->vi) ;
if(oggvorbis_init_encoder(&context->vi, avccontext) < 0) {
- fprintf(stderr, "oggvorbis_encode_init: init_encoder failed") ;
+ av_log(avccontext, AV_LOG_ERROR, "oggvorbis_encode_init: init_encoder failed") ;
return -1 ;
}
vorbis_analysis_init(&context->vd, &context->vi) ;
vorbis_block_init(&context->vd, &context->vb) ;
+ vorbis_comment_init(&context->vc);
+ vorbis_comment_add_tag(&context->vc, "encoder", LIBAVCODEC_IDENT) ;
+
+ vorbis_analysis_headerout(&context->vd, &context->vc, &header,
+ &header_comm, &header_code);
+
+ len = header.bytes + header_comm.bytes + header_code.bytes;
+ avccontext->extradata_size= 64 + len + len/255;
+ p = avccontext->extradata= av_mallocz(avccontext->extradata_size);
+ p[0] = 2;
+ offset = 1;
+ offset += av_xiphlacing(&p[offset], header.bytes);
+ offset += av_xiphlacing(&p[offset], header_comm.bytes);
+ memcpy(&p[offset], header.packet, header.bytes);
+ offset += header.bytes;
+ memcpy(&p[offset], header_comm.packet, header_comm.bytes);
+ offset += header_comm.bytes;
+ memcpy(&p[offset], header_code.packet, header_code.bytes);
+ offset += header_code.bytes;
+ avccontext->extradata_size = offset;
+ avccontext->extradata= av_realloc(avccontext->extradata, avccontext->extradata_size);
+
+/* vorbis_block_clear(&context->vb);
+ vorbis_dsp_clear(&context->vd);
+ vorbis_info_clear(&context->vi);*/
+ vorbis_comment_clear(&context->vc);
+
avccontext->frame_size = OGGVORBIS_FRAME_SIZE ;
avccontext->coded_frame= avcodec_alloc_frame();
OggVorbisContext *context = avccontext->priv_data ;
float **buffer ;
ogg_packet op ;
- signed char *audio = data ;
- int l, samples = OGGVORBIS_FRAME_SIZE ;
+ signed short *audio = data ;
+ int l, samples = data ? OGGVORBIS_FRAME_SIZE : 0;
buffer = vorbis_analysis_buffer(&context->vd, samples) ;
if(context->vi.channels == 1) {
for(l = 0 ; l < samples ; l++)
- buffer[0][l]=((audio[l*2+1]<<8)|(0x00ff&(int)audio[l*2]))/32768.f;
+ buffer[0][l]=audio[l]/32768.f;
} else {
for(l = 0 ; l < samples ; l++){
- buffer[0][l]=((audio[l*4+1]<<8)|(0x00ff&(int)audio[l*4]))/32768.f;
- buffer[1][l]=((audio[l*4+3]<<8)|(0x00ff&(int)audio[l*4+2]))/32768.f;
+ buffer[0][l]=audio[l*2]/32768.f;
+ buffer[1][l]=audio[l*2+1]/32768.f;
}
}
vorbis_analysis_wrote(&context->vd, samples) ;
- l = 0 ;
-
while(vorbis_analysis_blockout(&context->vd, &context->vb) == 1) {
vorbis_analysis(&context->vb, NULL);
vorbis_bitrate_addblock(&context->vb) ;
while(vorbis_bitrate_flushpacket(&context->vd, &op)) {
- memcpy(packets + l, &op, sizeof(ogg_packet)) ;
- memcpy(packets + l + sizeof(ogg_packet), op.packet, op.bytes) ;
- l += sizeof(ogg_packet) + op.bytes ;
+ if(op.bytes==1) //id love to say this is a hack, bad sadly its not, appearently the end of stream decission is in libogg
+ continue;
+ memcpy(context->buffer + context->buffer_index, &op, sizeof(ogg_packet));
+ context->buffer_index += sizeof(ogg_packet);
+ memcpy(context->buffer + context->buffer_index, op.packet, op.bytes);
+ context->buffer_index += op.bytes;
+// av_log(avccontext, AV_LOG_DEBUG, "e%d / %d\n", context->buffer_index, op.bytes);
}
}
- return l ;
+ l=0;
+ if(context->buffer_index){
+ ogg_packet *op2= (ogg_packet*)context->buffer;
+ op2->packet = context->buffer + sizeof(ogg_packet);
+
+ l= op2->bytes;
+ avccontext->coded_frame->pts= op2->granulepos;
+
+ memcpy(packets, op2->packet, l);
+ context->buffer_index -= l + sizeof(ogg_packet);
+ memcpy(context->buffer, context->buffer + l + sizeof(ogg_packet), context->buffer_index);
+// av_log(avccontext, AV_LOG_DEBUG, "E%d\n", l);
+ }
+
+ return l;
}
vorbis_analysis_wrote(&context->vd, 0) ; /* notify vorbisenc this is EOF */
- /* We need to write all the remaining packets into the stream
- * on closing */
-
- fprintf(stderr, "fixme: not all packets written on oggvorbis_encode_close()\n") ;
-
-/*
- while(vorbis_bitrate_flushpacket(&context->vd, &op)) {
- memcpy(packets + l, &op, sizeof(ogg_packet)) ;
- memcpy(packets + l + sizeof(ogg_packet), op.packet, op.bytes) ;
- l += sizeof(ogg_packet) + op.bytes ;
- }
-*/
-
vorbis_block_clear(&context->vb);
vorbis_dsp_clear(&context->vd);
vorbis_info_clear(&context->vi);
av_freep(&avccontext->coded_frame);
+ av_freep(&avccontext->extradata);
return 0 ;
}
sizeof(OggVorbisContext),
oggvorbis_encode_init,
oggvorbis_encode_frame,
- oggvorbis_encode_close
+ oggvorbis_encode_close,
+ .capabilities= CODEC_CAP_DELAY,
} ;
-
static int oggvorbis_decode_init(AVCodecContext *avccontext) {
OggVorbisContext *context = avccontext->priv_data ;
+ uint8_t *p= avccontext->extradata;
+ int i, hsizes[3];
+ unsigned char *headers[3], *extradata = avccontext->extradata;
vorbis_info_init(&context->vi) ;
vorbis_comment_init(&context->vc) ;
+ if(! avccontext->extradata_size || ! p) {
+ av_log(avccontext, AV_LOG_ERROR, "vorbis extradata absent\n");
+ return -1;
+ }
+
+ if(p[0] == 0 && p[1] == 30) {
+ for(i = 0; i < 3; i++){
+ hsizes[i] = *p++ << 8;
+ hsizes[i] += *p++;
+ headers[i] = p;
+ p += hsizes[i];
+ }
+ } else if(*p == 2) {
+ unsigned int offset = 1;
+ p++;
+ for(i=0; i<2; i++) {
+ hsizes[i] = 0;
+ while((*p == 0xFF) && (offset < avccontext->extradata_size)) {
+ hsizes[i] += 0xFF;
+ offset++;
+ p++;
+ }
+ if(offset >= avccontext->extradata_size - 1) {
+ av_log(avccontext, AV_LOG_ERROR,
+ "vorbis header sizes damaged\n");
+ return -1;
+ }
+ hsizes[i] += *p;
+ offset++;
+ p++;
+ }
+ hsizes[2] = avccontext->extradata_size - hsizes[0]-hsizes[1]-offset;
+#if 0
+ av_log(avccontext, AV_LOG_DEBUG,
+ "vorbis header sizes: %d, %d, %d, / extradata_len is %d \n",
+ hsizes[0], hsizes[1], hsizes[2], avccontext->extradata_size);
+#endif
+ headers[0] = extradata + offset;
+ headers[1] = extradata + offset + hsizes[0];
+ headers[2] = extradata + offset + hsizes[0] + hsizes[1];
+ } else {
+ av_log(avccontext, AV_LOG_ERROR,
+ "vorbis initial header len is wrong: %d\n", *p);
+ return -1;
+ }
+
+ for(i=0; i<3; i++){
+ context->op.b_o_s= i==0;
+ context->op.bytes = hsizes[i];
+ context->op.packet = headers[i];
+ if(vorbis_synthesis_headerin(&context->vi, &context->vc, &context->op)<0){
+ av_log(avccontext, AV_LOG_ERROR, "%d. vorbis header damaged\n", i+1);
+ return -1;
+ }
+ }
+
+ avccontext->channels = context->vi.channels;
+ avccontext->sample_rate = context->vi.rate;
+ avccontext->time_base= (AVRational){1, avccontext->sample_rate};
+
+ vorbis_synthesis_init(&context->vd, &context->vi);
+ vorbis_block_init(&context->vd, &context->vb);
+
return 0 ;
}
static int oggvorbis_decode_frame(AVCodecContext *avccontext,
void *data, int *data_size,
- UINT8 *buf, int buf_size)
+ uint8_t *buf, int buf_size)
{
OggVorbisContext *context = avccontext->priv_data ;
- ogg_packet *op = (ogg_packet*)buf ;
float **pcm ;
- int samples, total_samples, total_bytes ;
+ ogg_packet *op= &context->op;
+ int samples, total_samples, total_bytes,i;
- op->packet = (char*)op + sizeof(ogg_packet) ; /* correct data pointer */
-
- if(op->packetno < 3) {
- vorbis_synthesis_headerin(&context->vi, &context->vc, op) ;
- return buf_size ;
+ if(!buf_size){
+ //FIXME flush
+ return 0;
}
+
+ op->packet = buf;
+ op->bytes = buf_size;
- if(op->packetno == 3) {
- fprintf(stderr, "vorbis_decode: %d channel, %ldHz, encoder `%s'\n",
- context->vi.channels, context->vi.rate, context->vc.vendor);
-
- avccontext->channels = context->vi.channels ;
- avccontext->sample_rate = context->vi.rate ;
-
- vorbis_synthesis_init(&context->vd, &context->vi) ;
- vorbis_block_init(&context->vd, &context->vb);
- }
+// av_log(avccontext, AV_LOG_DEBUG, "%d %d %d %lld %lld %d %d\n", op->bytes, op->b_o_s, op->e_o_s, op->granulepos, op->packetno, buf_size, context->vi.rate);
+
+/* for(i=0; i<op->bytes; i++)
+ av_log(avccontext, AV_LOG_DEBUG, "%02X ", op->packet[i]);
+ av_log(avccontext, AV_LOG_DEBUG, "\n");*/
if(vorbis_synthesis(&context->vb, op) == 0)
vorbis_synthesis_blockin(&context->vd, &context->vb) ;
NULL,
oggvorbis_decode_close,
oggvorbis_decode_frame,
+ .capabilities= CODEC_CAP_DELAY,
} ;
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