static int oggvorbis_encode_frame(AVCodecContext *avccontext, unsigned char *packets, int buf_size, void *data) { OggVorbisContext *context = avccontext->priv_data ; float **buffer ; ogg_packet op ; signed char *audio = data ; int l, samples = OGGVORBIS_FRAME_SIZE ; 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; } 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; } } vorbis_analysis_wrote(&context->vd, samples) ; 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(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); } } if(context->buffer_index){ ogg_packet *op2= (ogg_packet*)context->buffer; op2->packet = context->buffer + sizeof(ogg_packet); l= op2->bytes; 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; } return 0; }